(function webpackUniversalModuleDefinition(root, factory) {
	if(typeof exports === 'object' && typeof module === 'object')
		module.exports = factory(require("jQuery"));
	else if(typeof define === 'function' && define.amd)
		define(["jQuery"], factory);
	else if(typeof exports === 'object')
		exports["app"] = factory(require("jQuery"));
	else
		root["app"] = factory(root["jQuery"]);
})(typeof self !== 'undefined' ? self : this, function(__WEBPACK_EXTERNAL_MODULE_0__) {
return /******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};
/******/
/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {
/******/
/******/ 		// Check if module is in cache
/******/ 		if(installedModules[moduleId]) {
/******/ 			return installedModules[moduleId].exports;
/******/ 		}
/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			i: moduleId,
/******/ 			l: false,
/******/ 			exports: {}
/******/ 		};
/******/
/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ 		// Flag the module as loaded
/******/ 		module.l = true;
/******/
/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}
/******/
/******/
/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;
/******/
/******/ 	// expose the module cache
/******/ 	__webpack_require__.c = installedModules;
/******/
/******/ 	// define getter function for harmony exports
/******/ 	__webpack_require__.d = function(exports, name, getter) {
/******/ 		if(!__webpack_require__.o(exports, name)) {
/******/ 			Object.defineProperty(exports, name, {
/******/ 				configurable: false,
/******/ 				enumerable: true,
/******/ 				get: getter
/******/ 			});
/******/ 		}
/******/ 	};
/******/
/******/ 	// getDefaultExport function for compatibility with non-harmony modules
/******/ 	__webpack_require__.n = function(module) {
/******/ 		var getter = module && module.__esModule ?
/******/ 			function getDefault() { return module['default']; } :
/******/ 			function getModuleExports() { return module; };
/******/ 		__webpack_require__.d(getter, 'a', getter);
/******/ 		return getter;
/******/ 	};
/******/
/******/ 	// Object.prototype.hasOwnProperty.call
/******/ 	__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/ 	// __webpack_public_path__
/******/ 	__webpack_require__.p = "/assets/production/";
/******/
/******/ 	// Load entry module and return exports
/******/ 	return __webpack_require__(__webpack_require__.s = 258);
/******/ })
/************************************************************************/
/******/ ({

/***/ 0:
/***/ (function(module, exports) {

module.exports = __WEBPACK_EXTERNAL_MODULE_0__;

/***/ }),

/***/ 10:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony export (immutable) */ __webpack_exports__["e"] = makeString;
/* harmony export (immutable) */ __webpack_exports__["a"] = copy;
/* harmony export (immutable) */ __webpack_exports__["h"] = setPath;
/* harmony export (immutable) */ __webpack_exports__["f"] = pushPath;
/* harmony export (immutable) */ __webpack_exports__["d"] = getPath;
/* harmony export (immutable) */ __webpack_exports__["b"] = deepExtend;
/* harmony export (immutable) */ __webpack_exports__["g"] = regexEscape;
/* harmony export (immutable) */ __webpack_exports__["c"] = escape;
function makeString(object) {
  if (object == null) return '';
  /* eslint prefer-template: 0 */
  return '' + object;
}

function copy(a, s, t) {
  a.forEach(function (m) {
    if (s[m]) t[m] = s[m];
  });
}

function getLastOfPath(object, path, Empty) {
  function cleanKey(key) {
    return key && key.indexOf('###') > -1 ? key.replace(/###/g, '.') : key;
  }

  function canNotTraverseDeeper() {
    return !object || typeof object === 'string';
  }

  var stack = typeof path !== 'string' ? [].concat(path) : path.split('.');
  while (stack.length > 1) {
    if (canNotTraverseDeeper()) return {};

    var key = cleanKey(stack.shift());
    if (!object[key] && Empty) object[key] = new Empty();
    object = object[key];
  }

  if (canNotTraverseDeeper()) return {};
  return {
    obj: object,
    k: cleanKey(stack.shift())
  };
}

function setPath(object, path, newValue) {
  var _getLastOfPath = getLastOfPath(object, path, Object),
      obj = _getLastOfPath.obj,
      k = _getLastOfPath.k;

  obj[k] = newValue;
}

function pushPath(object, path, newValue, concat) {
  var _getLastOfPath2 = getLastOfPath(object, path, Object),
      obj = _getLastOfPath2.obj,
      k = _getLastOfPath2.k;

  obj[k] = obj[k] || [];
  if (concat) obj[k] = obj[k].concat(newValue);
  if (!concat) obj[k].push(newValue);
}

function getPath(object, path) {
  var _getLastOfPath3 = getLastOfPath(object, path),
      obj = _getLastOfPath3.obj,
      k = _getLastOfPath3.k;

  if (!obj) return undefined;
  return obj[k];
}

function deepExtend(target, source, overwrite) {
  /* eslint no-restricted-syntax: 0 */
  for (var prop in source) {
    if (prop in target) {
      // If we reached a leaf string in target or source then replace with source or skip depending on the 'overwrite' switch
      if (typeof target[prop] === 'string' || target[prop] instanceof String || typeof source[prop] === 'string' || source[prop] instanceof String) {
        if (overwrite) target[prop] = source[prop];
      } else {
        deepExtend(target[prop], source[prop], overwrite);
      }
    } else {
      target[prop] = source[prop];
    }
  }
  return target;
}

function regexEscape(str) {
  /* eslint no-useless-escape: 0 */
  return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, '\\$&');
}

/* eslint-disable */
var _entityMap = {
  "&": "&",
  "<": "&lt;",
  ">": "&gt;",
  '"': '&quot;',
  "'": '&#39;',
  "/": '&#x2F;'
};
/* eslint-enable */

function escape(data) {
  if (typeof data === 'string') {
    return data.replace(/[&<>"'\/]/g, function (s) {
      return _entityMap[s];
    });
  }

  return data;
}

/***/ }),

/***/ 12:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony default export */ __webpack_exports__["a"] = ({

  processors: {},

  addPostProcessor: function addPostProcessor(module) {
    this.processors[module.name] = module;
  },
  handle: function handle(processors, value, key, options, translator) {
    var _this = this;

    processors.forEach(function (processor) {
      if (_this.processors[processor]) value = _this.processors[processor].process(value, key, options, translator);
    });

    return value;
  }
});

/***/ }),

/***/ 13:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony export (immutable) */ __webpack_exports__["b"] = convertAPIOptions;
/* harmony export (immutable) */ __webpack_exports__["c"] = convertJSONOptions;
/* harmony export (immutable) */ __webpack_exports__["d"] = convertTOptions;
/* harmony export (immutable) */ __webpack_exports__["a"] = appendBackwardsAPI;
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__logger__ = __webpack_require__(3);
/* eslint no-param-reassign: 0 */


function convertInterpolation(options) {

  options.interpolation = {
    unescapeSuffix: 'HTML'
  };

  options.interpolation.prefix = options.interpolationPrefix || '__';
  options.interpolation.suffix = options.interpolationSuffix || '__';
  options.interpolation.escapeValue = options.escapeInterpolation || false;

  options.interpolation.nestingPrefix = options.reusePrefix || '$t(';
  options.interpolation.nestingSuffix = options.reuseSuffix || ')';

  return options;
}

function convertAPIOptions(options) {
  if (options.resStore) options.resources = options.resStore;

  if (options.ns && options.ns.defaultNs) {
    options.defaultNS = options.ns.defaultNs;
    options.ns = options.ns.namespaces;
  } else {
    options.defaultNS = options.ns || 'translation';
  }

  if (options.fallbackToDefaultNS && options.defaultNS) options.fallbackNS = options.defaultNS;

  options.saveMissing = options.sendMissing;
  options.saveMissingTo = options.sendMissingTo || 'current';
  options.returnNull = !options.fallbackOnNull;
  options.returnEmptyString = !options.fallbackOnEmpty;
  options.returnObjects = options.returnObjectTrees;
  options.joinArrays = '\n';

  options.returnedObjectHandler = options.objectTreeKeyHandler;
  options.parseMissingKeyHandler = options.parseMissingKey;
  options.appendNamespaceToMissingKey = true;

  options.nsSeparator = options.nsseparator || ':';
  options.keySeparator = options.keyseparator || '.';

  if (options.shortcutFunction === 'sprintf') {
    options.overloadTranslationOptionHandler = function handle(args) {
      var values = [];

      for (var i = 1; i < args.length; i++) {
        values.push(args[i]);
      }

      return {
        postProcess: 'sprintf',
        sprintf: values
      };
    };
  }

  options.whitelist = options.lngWhitelist;
  options.preload = options.preload;
  if (options.load === 'current') options.load = 'currentOnly';
  if (options.load === 'unspecific') options.load = 'languageOnly';

  // backend
  options.backend = options.backend || {};
  options.backend.loadPath = options.resGetPath || 'locales/__lng__/__ns__.json';
  options.backend.addPath = options.resPostPath || 'locales/add/__lng__/__ns__';
  options.backend.allowMultiLoading = options.dynamicLoad;

  // cache
  options.cache = options.cache || {};
  options.cache.prefix = 'res_';
  options.cache.expirationTime = 7 * 24 * 60 * 60 * 1000;
  options.cache.enabled = options.useLocalStorage;

  options = convertInterpolation(options);
  if (options.defaultVariables) options.interpolation.defaultVariables = options.defaultVariables;

  // COMPATIBILITY: deprecation
  // if (options.getAsync === false) throw deprecation error

  return options;
}

function convertJSONOptions(options) {
  options = convertInterpolation(options);
  options.joinArrays = '\n';

  return options;
}

function convertTOptions(options) {
  if (options.interpolationPrefix || options.interpolationSuffix || options.escapeInterpolation !== undefined) {
    options = convertInterpolation(options);
  }

  options.nsSeparator = options.nsseparator;
  options.keySeparator = options.keyseparator;

  options.returnObjects = options.returnObjectTrees;

  return options;
}

function appendBackwardsAPI(i18n) {
  i18n.lng = function () {
    __WEBPACK_IMPORTED_MODULE_0__logger__["a" /* default */].deprecate('i18next.lng() can be replaced by i18next.language for detected language or i18next.languages for languages ordered by translation lookup.');
    return i18n.services.languageUtils.toResolveHierarchy(i18n.language)[0];
  };

  i18n.preload = function (lngs, cb) {
    __WEBPACK_IMPORTED_MODULE_0__logger__["a" /* default */].deprecate('i18next.preload() can be replaced with i18next.loadLanguages()');
    i18n.loadLanguages(lngs, cb);
  };

  i18n.setLng = function (lng, options, callback) {
    __WEBPACK_IMPORTED_MODULE_0__logger__["a" /* default */].deprecate('i18next.setLng() can be replaced with i18next.changeLanguage() or i18next.getFixedT() to get a translation function with fixed language or namespace.');
    if (typeof options === 'function') {
      callback = options;
      options = {};
    }
    if (!options) options = {};

    if (options.fixLng === true) {
      if (callback) return callback(null, i18n.getFixedT(lng));
    }

    return i18n.changeLanguage(lng, callback);
  };

  i18n.addPostProcessor = function (name, fc) {
    __WEBPACK_IMPORTED_MODULE_0__logger__["a" /* default */].deprecate('i18next.addPostProcessor() can be replaced by i18next.use({ type: \'postProcessor\', name: \'name\', process: fc })');
    i18n.use({
      type: 'postProcessor',
      name: name,
      process: fc
    });
  };
}

/***/ }),

/***/ 14:
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/* WEBPACK VAR INJECTION */(function(jQuery) {

// @TODO enable lints
/* eslint-disable max-len*/
/* eslint-disable object-shorthand*/
/* eslint-disable dot-notation*/
/* eslint-disable vars-on-top*/
/* eslint-disable prefer-template*/
/* eslint-disable prefer-const*/
/* eslint-disable spaced-comment*/
/* eslint-disable curly*/
/* eslint-disable object-curly-spacing*/
/* eslint-disable spaced-comment*/
/* eslint-disable prefer-arrow-callback*/
/* eslint-disable one-var*/
/* eslint-disable space-in-parens*/
/* eslint-disable camelcase*/
/* eslint-disable no-undef*/
/* eslint-disable quote-props*/
/* eslint-disable no-shadow*/
/* eslint-disable no-param-reassign*/
/* eslint-disable no-unused-expressions*/
/* eslint-disable no-shadow*/
/* eslint-disable no-implied-eval*/
/* eslint-disable brace-style*/
/* eslint-disable no-unused-vars*/
/* eslint-disable brace-style*/
/* eslint-disable no-lonely-if*/
/* eslint-disable no-inline-comments*/
/* eslint-disable default-case*/
/* eslint-disable one-var*/
/* eslint-disable semi*/
var pym = __webpack_require__(17);
/*
 * jQuery Tooltip plugin 1.3
 *
 * http://bassistance.de/jquery-plugins/jquery-plugin-tooltip/
 * http://docs.jquery.com/Plugins/Tooltip
 *
 * Copyright (c) 2006 - 2008 J�rn Zaefferer
 *
 * $Id: jquery.tooltip.js 5741 2008-06-21 15:22:16Z joern.zaefferer $
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 */
(function ($) {
    $(document).bind('keydown', function (event) {
        if ($.tooltip === undefined) return;

        if (event.keyCode === 27 && $.tooltip.blocked === true) {
            unfixTooltip();
        }
    });

    var activeThumbnailFrame = void 0;
    // the tooltip element
    var helper = {},

    // the title of the current element, used for restoring
    title = void 0,

    // timeout id for delayed tooltips
    tID = void 0,

    // IE 5.5 or 6
    IE = navigator.userAgent.match(/msie/i) && /MSIE\s(5\.5|6\.)/.test(navigator.userAgent),

    // flag for mouse tracking
    track = false;

    $.tooltip = {
        blocked: false,
        ajaxTimeout: false,
        ajaxRequest: false,
        ajaxEvent: false,
        current: null,
        visible: false,
        defaults: {
            delay: 700,
            fixable: false,
            fixableIndex: 100,
            fade: true,
            showURL: true,
            outside: true,
            isBrowsable: false,
            extraClass: '',
            top: 15,
            left: 15,
            id: 'tooltip'
        },
        block: function block() {
            $.tooltip.blocked = !$.tooltip.blocked;
        },

        delayAjax: function delayAjax(a, b, c) {
            var datas = {};
            $.tooltip.ajaxRequest = $.ajax({
                url: $.tooltip.current.tooltipSrc,
                type: 'post',
                data: datas,
                success: function success(data) {
                    title = data;
                    positioning($.tooltip.ajaxEvent);
                },
                error: function error() {
                    return;
                }
            });
        }
    };

    $.fn.extend({
        tooltip: function tooltip(settings) {
            settings = $.extend({}, $.tooltip.defaults, settings);
            createHelper(settings);
            return this.each(function () {
                $.data(this, 'tooltip', settings);
                // copy tooltip into its own expando and remove the title
                this.tooltipText = $(this).attr('title');
                this.tooltipSrc = $(this).attr('tooltipsrc');

                this.ajaxLoad = $.trim(this.tooltipText) === '' && this.tooltipSrc !== '';
                this.ajaxTimeout;

                this.orEl = $(this);
                $(this).removeAttr('title');
                // also remove alt attribute to prevent default tooltip in IE
                this.alt = '';
            }).mouseover(save).mouseout(hide).mouseleave(function () {
                if (settings.isBrowsable) {
                    $.tooltip.currentHover = false;
                    // close caption container after a small delay
                    // (safe travel delay of the mouse between thumbnail and caption / allow user to cross
                    // boundaries without unexpected closing of the catpion)
                    setTimeout(function () {
                        hide();
                    }, 500);
                }
            }).mousedown(fix);
        },
        fixPNG: IE ? function () {
            return this.each(function () {
                var image = $(this).css('backgroundImage');
                if (image.match(/^url\(["']?(.*\.png)["']?\)$/i)) {
                    image = RegExp.$1;
                    $(this).css({
                        backgroundImage: 'none',
                        filter: "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=crop, src='" + image + "')"
                    }).each(function () {
                        var position = $(this).css('position');
                        if (position !== 'absolute' && position !== 'relative') $(this).css('position', 'relative');
                    });
                }
            });
        } : function () {
            return this;
        },
        unfixPNG: IE ? function () {
            return this.each(function () {
                $(this).css({
                    filter: '',
                    backgroundImage: ''
                });
            });
        } : function () {
            return this;
        },
        hideWhenEmpty: function hideWhenEmpty() {
            return this.each(function () {
                $(this)[$(this).html() ? 'show' : 'hide']();
            });
        },
        url: function url() {
            return this.attr('href') || this.attr('src');
        }
    });

    function createHelper(settings) {
        // there can be only one tooltip helper
        if (helper.parent) return;
        // create the helper, h3 for title, div for url
        helper.parent = $('<div id="' + settings.id + '"><div class="body"></div></div>')
        // add to document
        .appendTo(document.body)
        // hide it at first
        .hide();

        // apply bgiframe if available
        if ($.fn.bgiframe) helper.parent.bgiframe();

        // save references to title and url elements
        helper.title = $('h3', helper.parent);
        helper.body = $('div.body', helper.parent);
        helper.url = $('div.url', helper.parent);
    }

    function settings(element) {
        return $.data(element, 'tooltip');
    }

    // main event handler to start showing tooltips
    function handle(event) {
        if ($($.tooltip.current).hasClass('SSTT') && $($.tooltip.current).hasClass('ui-state-active')) return;

        // show helper, either with timeout or on instant
        if (settings(this).delay) tID = setTimeout(visible, settings(this).delay);else visible();
        show();

        // if selected, update the helper position when the mouse moves
        track = !!settings(this).track;
        $(document.body).bind('mousemove', update);

        // update at least once
        update(event);
    }

    // save elements title before the tooltip is displayed
    function save(event) {
        // if this is the current source, or it has no title (occurs with click event), stop
        if (event.stopPropagation) event.stopPropagation();

        event.cancelBubble = true;

        if ($.tooltip.blocked || this === $.tooltip.current || !this.tooltipText && !this.tooltipSrc && !settings(this).bodyHandler) return;

        // save current
        $.tooltip.current = this;
        title = this.tooltipText;

        // if element has href or src, add and show it, otherwise hide it
        if (settings(this).showURL && $(this).url()) helper.url.html($(this).url().replace('http://', '')).show();else helper.url.hide();
        // add an optional class for this tip
        helper.parent.removeClass();
        helper.parent.addClass(settings(this).extraClass);
        if (this.ajaxLoad) {
            // @TODO debounce instead of timeout
            clearTimeout($.tooltip.ajaxTimeout);
            $.tooltip.ajaxTimeout = setTimeout($.tooltip.delayAjax, 300);
            $.tooltip.ajaxEvent = event;
        } else {
            title = '<div class="popover" style="display:block;position:relative;">' + '<div class="arrow"></div>' + '<div class="popover-inner" style="width:auto;">' + '<div class="popover-content">' + title + '</div>' + '</div>' + '</div>';

            positioning.apply(this, arguments);
        }
        return;
    }

    function positioning(event) {
        helper.body.html(title);
        helper.body.show();
        var $this = $.tooltip.current;
        var tooltipSettings = settings($this) ? settings($this) : {};
        var fixedPosition = $.tooltip.blocked;
        // fix PNG background for IE
        if (tooltipSettings.fixPNG) helper.parent.fixPNG();
        if (tooltipSettings.outside) {
            var width = 'auto';
            var height = 'auto';
            var tooltipId = tooltipSettings.id;
            var $defaultTips = $('#' + tooltipId);
            var customId = 'phraseanet-embed-tooltip-frame';
            $defaultTips.find('#phraseanet-embed-frame').attr('id', customId);

            var $audioTips = $('#' + tooltipId + ' .audioTips');
            var $imgTips = $('#' + tooltipId + ' .imgTips');
            var $videoTips = $('#' + tooltipId + ' .videoTips');
            var $documentTips = $('#' + tooltipId + ' .documentTips');
            var shouldResize = $('#' + tooltipId + ' .noToolTipResize').length === 0 ? true : false;

            // get image or video original dimensions
            var recordWidth = 400;
            var recordHeight = 0;
            var tooltipVerticalOffset = 75;
            var tooltipHorizontalOffset = 35;
            var maxWidthAllowed = 1024;
            var maxHeightAllowed = 768;
            var tooltipWidth = 0;
            var tooltipHeight = 0;
            var viewportDimensions = viewport();
            var left = 0;
            var top = 0;
            var recordWidthOffset = 0;
            var recordHeightOffset = 0;
            var topOffset = 0;
            var leftOffset = 0;
            var rightOffset = 0;
            var bottomOffset = 0;
            var $selector = $defaultTips;

            if ($imgTips[0] && shouldResize) {
                recordWidth = parseInt($imgTips[0].style.width, 10);
                recordHeight = parseInt($imgTips[0].style.height, 10);
                $imgTips.css({ display: 'block', margin: '0 auto' });
                $selector = $imgTips;
            } else if ($documentTips[0] && shouldResize) {
                var recordUrl = $documentTips.data('src');
                recordWidth = $documentTips.data('original-width') > 400 ? $documentTips.data('original-width') : 400;
                recordHeight = $documentTips.data('original-width') > 400 ? $documentTips.data('original-height') : 600;
                $documentTips.css({ display: 'block', margin: '0 auto' });
                $selector = $documentTips;
                activeThumbnailFrame = new pym.Parent(customId, recordUrl);
                activeThumbnailFrame.iframe.setAttribute('allowfullscreen', '');
            } else if ($audioTips[0] && shouldResize) {
                var _recordUrl = $audioTips.data('src');
                recordWidth = 240;
                recordHeight = 240;
                $audioTips.css({ display: 'block', margin: '0 auto' });
                $selector = $audioTips;
                activeThumbnailFrame = new pym.Parent(customId, _recordUrl);
                activeThumbnailFrame.iframe.setAttribute('allowfullscreen', '');
            } else if ($videoTips[0] && shouldResize) {
                var _recordUrl2 = $videoTips.data('src');
                recordWidth = $videoTips.data('original-width');
                recordHeight = $videoTips.data('original-height');
                // limit video to maxWidth:
                /*if( recordWidth > 720 ) {
                 let limitRatio = recordWidth/recordHeight;
                 recordWidth = 720;
                 recordHeight = recordWidth / limitRatio;
                 }*/
                $videoTips.css({ display: 'block', margin: '0 auto' });
                $selector = $videoTips;
                activeThumbnailFrame = new pym.Parent(customId, _recordUrl2);
                activeThumbnailFrame.iframe.setAttribute('allowfullscreen', '');
                //activeThumbnailFrame.iframe.setAttribute('height', '100%');
            } else {
                // handle captions
                if ($selector.find('.popover').length > 0) {
                    recordWidth = parseInt($selector.find('.popover')[0].style.width, 10) || recordWidth;
                }
                var contentHeight = $selector.height();
                shouldResize = false;
                tooltipVerticalOffset = 13;
                recordHeight = contentHeight > maxHeightAllowed ? maxHeightAllowed : contentHeight;
                $selector.css({ height: 'auto' });
            }

            tooltipWidth = recordWidth + tooltipHorizontalOffset;
            tooltipHeight = recordHeight + tooltipVerticalOffset;

            var rescale = function rescale(containerWidth, containerHeight, resourceWidth, resourceHeight, maxWidthAllowed, maxHeightAllowed, $selector) {
                var resourceRatio = resourceHeight / resourceWidth;
                var resizeW = resourceWidth;
                var resizeH = resourceHeight;

                if (resourceWidth > resourceHeight) {
                    // if width still too large:
                    if (resizeW > containerWidth) {
                        resizeW = containerWidth;
                        resizeH = containerWidth * resourceRatio;
                    }

                    if (resizeH > containerHeight) {
                        resizeW = containerHeight / resourceRatio;
                        resizeH = containerHeight;
                    }
                } else {
                    if (resizeH > containerHeight) {
                        resizeW = containerHeight / resourceRatio;
                        resizeH = containerHeight;
                    }
                }

                if (maxWidthAllowed !== undefined && maxHeightAllowed !== undefined) {
                    if (resizeW > maxWidthAllowed || resizeH > maxHeightAllowed) {
                        return rescale(maxWidthAllowed, maxHeightAllowed, resourceWidth, resourceHeight);
                    }
                }

                if ($selector !== undefined) {
                    $selector.css({
                        width: Math.floor(resizeW),
                        height: Math.floor(resizeH)
                    });
                }

                return {
                    width: Math.floor(resizeW),
                    height: Math.floor(resizeH)
                };
            };

            if (event) {
                var $origEventTarget = $(event.target);

                // previewTips

                // since event target can have different positionning, try to get common closest parent:
                var $eventTarget = $origEventTarget.closest('.diapo');

                if ($eventTarget.length > 0) {
                    // tooltip from records answer
                    recordWidthOffset = $eventTarget.width() - 2; // remove width with margin/2
                    recordHeightOffset = $eventTarget.height() + 2; // remove height with margin/2
                    // change offsets:
                    topOffset = 14;
                    leftOffset = 1;
                    rightOffset = 2;
                    bottomOffset = -15;
                } else {
                    // tooltip from workzone (basket)
                    tooltipVerticalOffset = 0;
                    tooltipHorizontalOffset = 0;
                    topOffset = 50;
                    // fallback on original target if nothing found:
                    $eventTarget = $origEventTarget;
                }

                var recordPosition = $eventTarget.offset();

                var totalViewportWidth = viewportDimensions.x;
                var totalViewportHeight = viewportDimensions.y;

                //for basket
                if (recordPosition.left < 30) {
                    leftOffset = $('.insidebloc').width();
                }

                var leftAvailableSpace = recordPosition.left + leftOffset;
                var topAvailableSpace = recordPosition.top + topOffset;
                var rightAvailableSpace = totalViewportWidth - leftAvailableSpace - recordWidthOffset - rightOffset;
                var bottomAvailableSpace = totalViewportHeight - topAvailableSpace - recordHeightOffset;

                var shouldBeOnTop = false;
                var availableHeight = bottomAvailableSpace;
                var tooltipSize = {
                    width: tooltipWidth,
                    height: tooltipHeight
                };
                var position = 'top';

                if (topAvailableSpace > bottomAvailableSpace) {
                    shouldBeOnTop = true;
                    availableHeight = topAvailableSpace;
                }

                if (leftAvailableSpace > rightAvailableSpace) {
                    position = 'left';
                } else {
                    position = 'right';
                }

                // prefer bottom position if tooltip is a small caption:
                if (bottomAvailableSpace > leftAvailableSpace && bottomAvailableSpace > rightAvailableSpace) {
                    position = 'bottom';
                } else if (shouldBeOnTop && availableHeight > leftAvailableSpace && availableHeight > rightAvailableSpace) {
                    position = 'top';
                }

                if (fixedPosition === true) {
                    leftAvailableSpace = totalViewportWidth;
                    topAvailableSpace = totalViewportHeight;
                    position = 'top';
                }

                switch (position) {
                    case 'top':
                        tooltipSize = rescale(totalViewportWidth, topAvailableSpace, tooltipWidth, tooltipHeight, maxWidthAllowed, maxHeightAllowed);
                        tooltipWidth = tooltipSize.width;
                        tooltipHeight = tooltipSize.height;
                        left = leftAvailableSpace - tooltipSize.width / 2 + recordWidthOffset / 2;
                        top = topAvailableSpace - tooltipSize.height;
                        break;
                    case 'bottom':
                        tooltipSize = rescale(totalViewportWidth, bottomAvailableSpace, tooltipWidth, tooltipHeight, maxWidthAllowed, maxHeightAllowed);
                        tooltipWidth = tooltipSize.width;
                        tooltipHeight = tooltipSize.height;
                        left = leftAvailableSpace - tooltipSize.width / 2 + recordWidthOffset / 2;
                        top = totalViewportHeight - bottomAvailableSpace + bottomOffset;
                        break;
                    case 'left':
                        tooltipSize = rescale(leftAvailableSpace, totalViewportHeight, tooltipWidth, tooltipHeight, maxWidthAllowed, maxHeightAllowed);

                        tooltipWidth = tooltipSize.width;
                        tooltipHeight = tooltipSize.height;
                        left = leftAvailableSpace - tooltipSize.width;
                        break;
                    case 'right':
                        tooltipSize = rescale(rightAvailableSpace, totalViewportHeight, tooltipWidth, tooltipHeight, maxWidthAllowed, maxHeightAllowed);
                        tooltipWidth = tooltipSize.width;
                        tooltipHeight = tooltipSize.height;
                        left = leftAvailableSpace + recordWidthOffset + rightOffset;
                        break;
                }

                // tooltipHeight = tooltipHeight + 18;
                // tooltipWidth = tooltipWidth + 28;
                if (fixedPosition === true) {
                    left = totalViewportWidth / 2 - tooltipWidth / 2;
                    top = totalViewportHeight / 2 - tooltipHeight / 2;
                } else {
                    // try to vertical center, relative to source:
                    if (position === 'left' || position === 'right') {
                        var verticalSpace = topAvailableSpace + recordHeightOffset / 2 + tooltipHeight / 2;
                        if (verticalSpace < totalViewportHeight) {
                            // tooltip can be aligned vertically
                            top = topAvailableSpace + recordHeightOffset / 2 - tooltipHeight / 2;
                        } else {
                            top = totalViewportHeight - tooltipHeight;
                        }
                        top = top < 0 ? 0 : top;
                    }

                    // try to horizontal center, relative to source:
                    if (position === 'top' || position === 'bottom') {
                        // push to left
                        // push to right
                        var takeLeftSpace = tooltipWidth / 2 + leftAvailableSpace;
                        var takeRightSpace = tooltipWidth / 2 + rightAvailableSpace;
                        // if centering on top or bottom and tooltip is offcanvas
                        if (takeLeftSpace > totalViewportWidth || takeRightSpace > totalViewportWidth) {
                            if (leftAvailableSpace > totalViewportWidth / 2) {
                                // push at left
                                left = 0;
                            } else {
                                // push at right
                                left = totalViewportWidth - tooltipWidth;
                            }
                        } else {
                            // center
                            left = leftAvailableSpace - tooltipWidth / 2 + recordWidthOffset / 2;
                        }
                    }
                }

                var resizeProperties = {
                    left: left,
                    top: top
                };

                if (shouldResize) {
                    // rescale $selector css:
                    rescale(tooltipWidth - tooltipHorizontalOffset, tooltipHeight - tooltipVerticalOffset, recordWidth, recordHeight, maxWidthAllowed, maxHeightAllowed, $selector);
                    // reset non used css properties:
                    resizeProperties['max-width'] = '';
                    resizeProperties['min-width'] = '';
                } else {
                    // ensure tooltip width match with left position
                    resizeProperties['max-width'] = Math.round(tooltipWidth);
                    resizeProperties['min-width'] = Math.round(tooltipWidth);
                }

                resizeProperties['width'] = shouldResize ? Math.round(tooltipWidth) : 'auto';
                resizeProperties['height'] = shouldResize ? Math.round(tooltipHeight) : 'auto';

                helper.parent.css(resizeProperties);
            }
        }
        handle.apply($this, arguments);
        return;
    }

    // delete timeout and show helper
    function show() {
        tID = null;
        var isBrowsable = false;
        if ($.tooltip.current !== null) {
            isBrowsable = settings($.tooltip.current).isBrowsable;
        }

        if ((!IE || !$.fn.bgiframe) && settings($.tooltip.current).fade) {
            if (helper.parent.is(':animated')) helper.parent.stop().show().fadeTo(settings($.tooltip.current).fade, 100);else helper.parent.is(':visible') ? helper.parent.fadeTo(settings($.tooltip.current).fade, 100) : helper.parent.fadeIn(settings($.tooltip.current).fade);
        } else {
            helper.parent.show();
        }

        $(helper.parent[0]).unbind('mouseenter').unbind('mouseleave').mouseenter(function () {
            if (isBrowsable) {
                $.tooltip.currentHover = true;
            }
        }).mouseleave(function () {
            if (isBrowsable) {
                // if tooltip has scrollable content or selectionnable text - should be closed on mouseleave:
                $.tooltip.currentHover = false;
                helper.parent.hide();
            }
        });

        update();
    }

    function fix(event) {
        if (!$.tooltip.current) {
            return;
        }
        if (!$(this).hasClass('captionTips') || !event.altKey) {
            if (!settings(this).fixable) {
                hide(event);
                return;
            }
        }
        event.cancelBubble = true;
        if (event.stopPropagation) event.stopPropagation();
        showOverlay('_tooltip', 'body', unfixTooltip, settings(this).fixableIndex);
        $('#tooltip .tooltip_closer').show().bind('click', unfixTooltip);
        $.tooltip.blocked = true;
        positioning.apply(this, arguments);
    }

    function visible() {
        $.tooltip.visible = true;
        helper.parent.css({
            visibility: 'visible'
        });
    }

    /**
     * callback for mousemove
     * updates the helper position
     * removes itself when no current element
     */
    function update(event) {
        if ($.tooltip.blocked) return;

        if (event && event.target.tagName === 'OPTION') {
            return;
        }

        // stop updating when tracking is disabled and the tooltip is visible
        if (!track && helper.parent.is(':visible')) {
            $(document.body).unbind('mousemove', update);
            $.tooltip.currentHover = true;
        }

        // if no current element is available, remove this listener
        if ($.tooltip.current === null) {
            $(document.body).unbind('mousemove', update);
            $.tooltip.currentHover = false;
            return;
        }

        // remove position helper classes
        helper.parent.removeClass('viewport-right').removeClass('viewport-bottom');

        if (!settings($.tooltip.current).outside) {
            var left = helper.parent[0].offsetLeft;
            var top = helper.parent[0].offsetTop;
            helper.parent.width('auto');
            helper.parent.height('auto');
            if (event) {
                // position the helper 15 pixel to bottom right, starting from mouse position
                left = event.pageX + settings($.tooltip.current).left;
                top = event.pageY + settings($.tooltip.current).top;
                var right = 'auto';
                if (settings($.tooltip.current).positionLeft) {
                    right = $(window).width() - left;
                    left = 'auto';
                }
                helper.parent.css({
                    left: left,
                    right: right,
                    top: top
                });
            }

            var v = viewport(),
                h = helper.parent[0];
            // check horizontal position
            if (v.x + v.cx < h.offsetLeft + h.offsetWidth) {
                left -= h.offsetWidth + 20 + settings($.tooltip.current).left;
                helper.parent.css({
                    left: left + 'px'
                }).addClass('viewport-right');
            }
            // check vertical position
            if (v.y + v.cy < h.offsetTop + h.offsetHeight) {
                top -= h.offsetHeight + 20 + settings($.tooltip.current).top;
                helper.parent.css({
                    top: top + 'px'
                }).addClass('viewport-bottom');
            }
        }
    }

    function viewport() {
        return {
            x: $(window).width(),
            y: $(window).height(),

            cx: 0,
            cy: 0
        };
    }

    // hide helper and restore added classes and the title
    function hide(event) {
        var isBrowsable = false;
        if ($.tooltip.current !== null) {
            isBrowsable = settings($.tooltip.current).isBrowsable;
        }
        if ($.tooltip.currentHover && isBrowsable) {
            return;
        }

        if ($.tooltip.blocked || !$.tooltip.current) return;

        $(helper.parent[0]).unbind('mouseenter').unbind('mouseleave');

        // clear timeout if possible
        if (tID) clearTimeout(tID);
        // no more current element
        $.tooltip.visible = false;
        var tsettings = settings($.tooltip.current);
        clearTimeout($.tooltip.ajaxTimeout);
        if ($.tooltip.ajaxRequest && $.tooltip.ajaxRequest.abort) {
            $.tooltip.ajaxRequest.abort();
        }

        helper.body.empty();
        $.tooltip.current = null;
        function complete() {
            helper.parent.removeClass(tsettings.extraClass).hide().css('opacity', '');
        }

        if ((!IE || !$.fn.bgiframe) && tsettings.fade) {
            if (helper.parent.is(':animated')) helper.parent.stop().fadeTo(tsettings.fade, 0, complete);else helper.parent.stop().fadeOut(tsettings.fade, complete);
        } else complete();

        if (tsettings.fixPNG) helper.parent.unfixPNG();
    }

    function unfixTooltip() {
        $.tooltip.blocked = false;
        $.tooltip.visible = false;
        $.tooltip.current = null;
        $('#tooltip').hide();
        $('#tooltip .tooltip_closer').hide();
        hideOverlay('_tooltip');
    }

    var showOverlay = function showOverlay(n, appendto, callback, zIndex) {
        var div = 'OVERLAY';
        if (typeof n !== 'undefined') div += n;
        if ($('#' + div).length === 0) {
            if (typeof appendto === 'undefined') appendto = 'body';
            $(appendto).append('<div id="' + div + '" style="display:none;">&nbsp;</div>');
        }

        var css = {
            display: 'block',
            opacity: 0,
            right: 0,
            bottom: 0,
            position: 'absolute',
            top: 0,
            zIndex: zIndex,
            left: 0
        };

        if (parseInt(zIndex, 10) > 0) css['zIndex'] = parseInt(zIndex, 10);

        if (typeof callback !== 'function') callback = function callback() {};
        $('#' + div).css(css).addClass('overlay').fadeTo(500, 0.7).bind('click', function () {
            callback();
        });
        if (navigator.userAgent.match(/msie/i) && navigator.userAgent.match(/6/)) {
            $('select').css({
                visibility: 'hidden'
            });
        }
    };

    var hideOverlay = function hideOverlay(n) {
        if (navigator.userAgent.match(/msie/i) && navigator.userAgent.match(/6/)) {
            $('select').css({
                visibility: 'visible'
            });
        }
        var div = 'OVERLAY';
        if (typeof n !== 'undefined') div += n;
        $('#' + div).hide().remove();
    };

    return {
        unfixTooltip: unfixTooltip
    };
})(jQuery);
/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(0)))

/***/ }),

/***/ 15:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
    value: true
});

var _rx = __webpack_require__(7);

var Rx = _interopRequireWildcard(_rx);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

var hasOwnProp = {}.hasOwnProperty;

function createName(name) {
    return '$' + name;
}

var Emitter = function Emitter() {
    this.subjects = {};
};

Emitter.prototype.emit = function (name, data) {
    var fnName = createName(name);
    this.subjects[fnName] || (this.subjects[fnName] = new Rx.Subject());
    this.subjects[fnName].onNext(data);

    return this.subjects[fnName];
};

Emitter.prototype.listen = function (name, handler) {
    var fnName = createName(name);
    this.subjects[fnName] || (this.subjects[fnName] = new Rx.Subject());
    return this.subjects[fnName].subscribe(handler);
};
Emitter.prototype.listenAll = function (group, name, handler) {
    for (var prop in group) {
        var fnName = createName(prop);
        this.subjects[fnName] || (this.subjects[fnName] = new Rx.Subject());
        this.subjects[fnName].subscribe(group[prop]);
    }
};

Emitter.prototype.disposeOf = function (startWith) {
    var search = new RegExp('^\\$' + startWith);
    var subjects = this.subjects;
    for (var prop in subjects) {
        if (hasOwnProp.call(subjects, prop)) {
            if (search.test(prop)) {
                subjects[prop].dispose();
            }
        }
    }

    this.subjects = {};
};
Emitter.prototype.dispose = function () {
    var subjects = this.subjects;
    for (var prop in subjects) {
        if (hasOwnProp.call(subjects, prop)) {
            subjects[prop].dispose();
        }
    }

    this.subjects = {};
};
exports.default = Emitter;

/***/ }),

/***/ 16:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
    value: true
});

var _applicationConfigService = __webpack_require__(18);

var _applicationConfigService2 = _interopRequireDefault(_applicationConfigService);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var instance = null;

var ConfigService = function (_ApplicationConfigSer) {
    _inherits(ConfigService, _ApplicationConfigSer);

    function ConfigService(configuration) {
        var _ret;

        _classCallCheck(this, ConfigService);

        var _this = _possibleConstructorReturn(this, (ConfigService.__proto__ || Object.getPrototypeOf(ConfigService)).call(this, configuration));

        if (!instance) {

            instance = _this;
        }

        return _ret = instance, _possibleConstructorReturn(_this, _ret);
    }

    return ConfigService;
}(_applicationConfigService2.default);

exports.default = ConfigService;

/***/ }),

/***/ 17:
/***/ (function(module, exports, __webpack_require__) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_RESULT__;/*! pym.js - v1.3.2 - 2018-02-13 */
/*
* Pym.js is library that resizes an iframe based on the width of the parent and the resulting height of the child.
* Check out the docs at http://blog.apps.npr.org/pym.js/ or the readme at README.md for usage.
*/

/** @module pym */
(function(factory) {
    if (true) {
        !(__WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
				(__WEBPACK_AMD_DEFINE_FACTORY__.call(exports, __webpack_require__, exports, module)) :
				__WEBPACK_AMD_DEFINE_FACTORY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    }
    else if (typeof module !== 'undefined' && module.exports) {
        module.exports = factory();
    } else {
        window.pym = factory.call(this);
    }
})(function() {
    var MESSAGE_DELIMITER = 'xPYMx';

    var lib = {};

    /**
    * Create and dispatch a custom pym event
    *
    * @method _raiseCustomEvent
    * @inner
    *
    * @param {String} eventName
    */
   var _raiseCustomEvent = function(eventName) {
     var event = document.createEvent('Event');
     event.initEvent('pym:' + eventName, true, true);
     document.dispatchEvent(event);
   };

    /**
    * Generic function for parsing URL params.
    * Via http://stackoverflow.com/questions/901115/how-can-i-get-query-string-values-in-javascript
    *
    * @method _getParameterByName
    * @inner
    *
    * @param {String} name The name of the paramter to get from the URL.
    */
    var _getParameterByName = function(name) {
        var regex = new RegExp("[\\?&]" + name.replace(/[\[]/, '\\[').replace(/[\]]/, '\\]') + '=([^&#]*)');
        var results = regex.exec(location.search);

        if (results === null) {
            return '';
        }

        return decodeURIComponent(results[1].replace(/\+/g, " "));
    };

    /**
     * Check the message to make sure it comes from an acceptable xdomain.
     * Defaults to '*' but can be overriden in config.
     *
     * @method _isSafeMessage
     * @inner
     *
     * @param {Event} e The message event.
     * @param {Object} settings Configuration.
     */
    var _isSafeMessage = function(e, settings) {
        if (settings.xdomain !== '*') {
            // If origin doesn't match our xdomain, return.
            if (!e.origin.match(new RegExp(settings.xdomain + '$'))) { return; }
        }

        // Ignore events that do not carry string data #151
        if (typeof e.data !== 'string') { return; }

        return true;
    };

    var _isSafeUrl = function(url) {
        // Adapted from angular 2 url sanitizer
        var SAFE_URL_PATTERN = /^(?:(?:https?|mailto|ftp):|[^&:/?#]*(?:[/?#]|$))/gi;
        if (!url.match(SAFE_URL_PATTERN)) { return; }
        
        return true;
    };

    /**
     * Construct a message to send between frames.
     *
     * NB: We use string-building here because JSON message passing is
     * not supported in all browsers.
     *
     * @method _makeMessage
     * @inner
     *
     * @param {String} id The unique id of the message recipient.
     * @param {String} messageType The type of message to send.
     * @param {String} message The message to send.
     */
    var _makeMessage = function(id, messageType, message) {
        var bits = ['pym', id, messageType, message];

        return bits.join(MESSAGE_DELIMITER);
    };

    /**
     * Construct a regex to validate and parse messages.
     *
     * @method _makeMessageRegex
     * @inner
     *
     * @param {String} id The unique id of the message recipient.
     */
    var _makeMessageRegex = function(id) {
        var bits = ['pym', id, '(\\S+)', '(.*)'];

        return new RegExp('^' + bits.join(MESSAGE_DELIMITER) + '$');
    };

    /**
    * Underscore implementation of getNow
    *
    * @method _getNow
    * @inner
    *
    */
    var _getNow = Date.now || function() {
        return new Date().getTime();
    };

    /**
    * Underscore implementation of throttle
    *
    * @method _throttle
    * @inner
    *
    * @param {function} func Throttled function
    * @param {number} wait Throttle wait time
    * @param {object} options Throttle settings
    */

    var _throttle = function(func, wait, options) {
        var context, args, result;
        var timeout = null;
        var previous = 0;
        if (!options) {options = {};}
        var later = function() {
            previous = options.leading === false ? 0 : _getNow();
            timeout = null;
            result = func.apply(context, args);
            if (!timeout) {context = args = null;}
        };
        return function() {
            var now = _getNow();
            if (!previous && options.leading === false) {previous = now;}
            var remaining = wait - (now - previous);
            context = this;
            args = arguments;
            if (remaining <= 0 || remaining > wait) {
                if (timeout) {
                    clearTimeout(timeout);
                    timeout = null;
                }
                previous = now;
                result = func.apply(context, args);
                if (!timeout) {context = args = null;}
            } else if (!timeout && options.trailing !== false) {
                timeout = setTimeout(later, remaining);
            }
            return result;
        };
    };

    /**
     * Clean autoInit Instances: those that point to contentless iframes
     * @method _cleanAutoInitInstances
     * @inner
     */
    var _cleanAutoInitInstances = function() {
        var length = lib.autoInitInstances.length;

        // Loop backwards to avoid index issues
        for (var idx = length - 1; idx >= 0; idx--) {
            var instance = lib.autoInitInstances[idx];
            // If instance has been removed or is contentless then remove it
            if (instance.el.getElementsByTagName('iframe').length &&
                instance.el.getElementsByTagName('iframe')[0].contentWindow) {
                continue;
            }
            else {
                // Remove the reference to the removed or orphan instance
                lib.autoInitInstances.splice(idx,1);
            }
        }
    };

    /**
     * Store auto initialized Pym instances for further reference
     * @name module:pym#autoInitInstances
     * @type Array
     * @default []
     */
    lib.autoInitInstances = [];

    /**
     * Initialize Pym for elements on page that have data-pym attributes.
     * Expose autoinit in case we need to call it from the outside
     * @instance
     * @method autoInit
     * @param {Boolean} doNotRaiseEvents flag to avoid sending custom events
     */
    lib.autoInit = function(doNotRaiseEvents) {
        var elements = document.querySelectorAll('[data-pym-src]:not([data-pym-auto-initialized])');
        var length = elements.length;

        // Clean stored instances in case needed
        _cleanAutoInitInstances();
        for (var idx = 0; idx < length; ++idx) {
            var element = elements[idx];
            /*
            * Mark automatically-initialized elements so they are not
            * re-initialized if the user includes pym.js more than once in the
            * same document.
            */
            element.setAttribute('data-pym-auto-initialized', '');

            // Ensure elements have an id
            if (element.id === '') {
                element.id = 'pym-' + idx + "-" + Math.random().toString(36).substr(2,5);
            }

            var src = element.getAttribute('data-pym-src');

            // List of data attributes to configure the component
            // structure: {'attribute name': 'type'}
            var settings = {'xdomain': 'string', 'title': 'string', 'name': 'string', 'id': 'string',
                            'sandbox': 'string', 'allowfullscreen': 'boolean',
                            'parenturlparam': 'string', 'parenturlvalue': 'string',
                            'optionalparams': 'boolean', 'trackscroll': 'boolean',
                            'scrollwait': 'number'};

            var config = {};

            for (var attribute in settings) {
                // via https://developer.mozilla.org/en-US/docs/Web/API/Element/getAttribute#Notes
               if (element.getAttribute('data-pym-'+attribute) !== null) {
                  switch (settings[attribute]) {
                    case 'boolean':
                       config[attribute] = !(element.getAttribute('data-pym-'+attribute) === 'false'); // jshint ignore:line
                       break;
                    case 'string':
                       config[attribute] = element.getAttribute('data-pym-'+attribute);
                       break;
                    case 'number':
                        var n = Number(element.getAttribute('data-pym-'+attribute));
                        if (!isNaN(n)) {
                            config[attribute] = n;
                        }
                        break;
                    default:
                       console.err('unrecognized attribute type');
                  }
               }
            }

            // Store references to autoinitialized pym instances
            var parent = new lib.Parent(element.id, src, config);
            lib.autoInitInstances.push(parent);
        }

        // Fire customEvent
        if (!doNotRaiseEvents) {
            _raiseCustomEvent("pym-initialized");
        }
        // Return stored autoinitalized pym instances
        return lib.autoInitInstances;
    };

    /**
     * The Parent half of a response iframe.
     *
     * @memberof module:pym
     * @class Parent
     * @param {String} id The id of the div into which the iframe will be rendered. sets {@link module:pym.Parent~id}
     * @param {String} url The url of the iframe source. sets {@link module:pym.Parent~url}
     * @param {Object} [config] Configuration for the parent instance. sets {@link module:pym.Parent~settings}
     * @param {string} [config.xdomain='*'] - xdomain to validate messages received
     * @param {string} [config.title] - if passed it will be assigned to the iframe title attribute
     * @param {string} [config.name] - if passed it will be assigned to the iframe name attribute
     * @param {string} [config.id] - if passed it will be assigned to the iframe id attribute
     * @param {boolean} [config.allowfullscreen] - if passed and different than false it will be assigned to the iframe allowfullscreen attribute
     * @param {string} [config.sandbox] - if passed it will be assigned to the iframe sandbox attribute (we do not validate the syntax so be careful!!)
     * @param {string} [config.parenturlparam] - if passed it will be override the default parentUrl query string parameter name passed to the iframe src
     * @param {string} [config.parenturlvalue] - if passed it will be override the default parentUrl query string parameter value passed to the iframe src
     * @param {string} [config.optionalparams] - if passed and different than false it will strip the querystring params parentUrl and parentTitle passed to the iframe src
     * @param {boolean} [config.trackscroll] - if passed it will activate scroll tracking on the parent
     * @param {number} [config.scrollwait] - if passed it will set the throttle wait in order to fire scroll messaging. Defaults to 100 ms.
     * @see {@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/iframe iFrame}
     */
    lib.Parent = function(id, url, config) {
        /**
         * The id of the container element
         *
         * @memberof module:pym.Parent
         * @member {string} id
         * @inner
         */
        this.id = id;
        /**
         * The url that will be set as the iframe's src
         *
         * @memberof module:pym.Parent
         * @member {String} url
         * @inner
         */
        this.url = url;

        /**
         * The container DOM object
         *
         * @memberof module:pym.Parent
         * @member {HTMLElement} el
         * @inner
         */
        this.el = document.getElementById(id);
        /**
         * The contained child iframe
         *
         * @memberof module:pym.Parent
         * @member {HTMLElement} iframe
         * @inner
         * @default null
         */
        this.iframe = null;
        /**
         * The parent instance settings, updated by the values passed in the config object
         *
         * @memberof module:pym.Parent
         * @member {Object} settings
         * @inner
         */
        this.settings = {
            xdomain: '*',
            optionalparams: true,
            parenturlparam: 'parentUrl',
            parenturlvalue: window.location.href,
            trackscroll: false,
            scrollwait: 100,
        };
        /**
         * RegularExpression to validate the received messages
         *
         * @memberof module:pym.Parent
         * @member {String} messageRegex
         * @inner
         */
        this.messageRegex = _makeMessageRegex(this.id);
        /**
         * Stores the registered messageHandlers for each messageType
         *
         * @memberof module:pym.Parent
         * @member {Object} messageHandlers
         * @inner
         */
        this.messageHandlers = {};

        // ensure a config object
        config = (config || {});

        /**
         * Construct the iframe.
         *
         * @memberof module:pym.Parent
         * @method _constructIframe
         * @inner
         */
        this._constructIframe = function() {
            // Calculate the width of this element.
            var width = this.el.offsetWidth.toString();

            // Create an iframe element attached to the document.
            this.iframe = document.createElement('iframe');

            // Save fragment id
            var hash = '';
            var hashIndex = this.url.indexOf('#');

            if (hashIndex > -1) {
                hash = this.url.substring(hashIndex, this.url.length);
                this.url = this.url.substring(0, hashIndex);
            }

            // If the URL contains querystring bits, use them.
            // Otherwise, just create a set of valid params.
            if (this.url.indexOf('?') < 0) {
                this.url += '?';
            } else {
                this.url += '&';
            }

            // Append the initial width as a querystring parameter
            // and optional params if configured to do so
            this.iframe.src = this.url + 'initialWidth=' + width +
                                         '&childId=' + this.id;

            if (this.settings.optionalparams) {
                this.iframe.src += '&parentTitle=' + encodeURIComponent(document.title);
                this.iframe.src += '&'+ this.settings.parenturlparam + '=' + encodeURIComponent(this.settings.parenturlvalue);
            }
            this.iframe.src +=hash;

            // Set some attributes to this proto-iframe.
            this.iframe.setAttribute('width', '100%');
            this.iframe.setAttribute('scrolling', 'no');
            this.iframe.setAttribute('marginheight', '0');
            this.iframe.setAttribute('frameborder', '0');

            if (this.settings.title) {
                this.iframe.setAttribute('title', this.settings.title);
            }

            if (this.settings.allowfullscreen !== undefined && this.settings.allowfullscreen !== false) {
                this.iframe.setAttribute('allowfullscreen','');
            }

            if (this.settings.sandbox !== undefined && typeof this.settings.sandbox === 'string') {
                this.iframe.setAttribute('sandbox', this.settings.sandbox);
            }

            if (this.settings.id) {
                if (!document.getElementById(this.settings.id)) {
                    this.iframe.setAttribute('id', this.settings.id);
                }
            }

            if (this.settings.name) {
                this.iframe.setAttribute('name', this.settings.name);
            }

            // Replace the child content if needed
            // (some CMSs might strip out empty elements)
            while(this.el.firstChild) { this.el.removeChild(this.el.firstChild); }
            // Append the iframe to our element.
            this.el.appendChild(this.iframe);

            // Add an event listener that will handle redrawing the child on resize.
            window.addEventListener('resize', this._onResize);

            // Add an event listener that will send the child the viewport.
            if (this.settings.trackscroll) {
                window.addEventListener('scroll', this._throttleOnScroll);
            }
        };

        /**
         * Send width on resize.
         *
         * @memberof module:pym.Parent
         * @method _onResize
         * @inner
         */
        this._onResize = function() {
            this.sendWidth();
            if (this.settings.trackscroll) {
                this.sendViewportAndIFramePosition();
            }
        }.bind(this);

        /**
         * Send viewport and iframe info on scroll.
         *
         * @memberof module:pym.Parent
         * @method _onScroll
         * @inner
         */
        this._onScroll = function() {
            this.sendViewportAndIFramePosition();
        }.bind(this);

        /**
         * Fire all event handlers for a given message type.
         *
         * @memberof module:pym.Parent
         * @method _fire
         * @inner
         *
         * @param {String} messageType The type of message.
         * @param {String} message The message data.
         */
        this._fire = function(messageType, message) {
            if (messageType in this.messageHandlers) {
                for (var i = 0; i < this.messageHandlers[messageType].length; i++) {
                   this.messageHandlers[messageType][i].call(this, message);
                }
            }
        };

        /**
         * Remove this parent from the page and unbind it's event handlers.
         *
         * @memberof module:pym.Parent
         * @method remove
         * @instance
         */
        this.remove = function() {
            window.removeEventListener('message', this._processMessage);
            window.removeEventListener('resize', this._onResize);

            this.el.removeChild(this.iframe);
            // _cleanAutoInitInstances in case this parent was autoInitialized
            _cleanAutoInitInstances();
        };

        /**
         * Process a new message from the child.
         *
         * @memberof module:pym.Parent
         * @method _processMessage
         * @inner
         *
         * @param {Event} e A message event.
         */
        this._processMessage = function(e) {
            // First, punt if this isn't from an acceptable xdomain.
            if (!_isSafeMessage(e, this.settings)) {
                return;
            }

            // Discard object messages, we only care about strings
            if (typeof e.data !== 'string') {
                return;
            }

            // Grab the message from the child and parse it.
            var match = e.data.match(this.messageRegex);

            // If there's no match or too many matches in the message, punt.
            if (!match || match.length !== 3) {
                return false;
            }

            var messageType = match[1];
            var message = match[2];

            this._fire(messageType, message);
        }.bind(this);

        /**
         * Resize iframe in response to new height message from child.
         *
         * @memberof module:pym.Parent
         * @method _onHeightMessage
         * @inner
         *
         * @param {String} message The new height.
         */
        this._onHeightMessage = function(message) {
            /*
             * Handle parent height message from child.
             */
            var height = parseInt(message);

            this.iframe.setAttribute('height', height + 'px');
        };

        /**
         * Navigate parent to a new url.
         *
         * @memberof module:pym.Parent
         * @method _onNavigateToMessage
         * @inner
         *
         * @param {String} message The url to navigate to.
         */
        this._onNavigateToMessage = function(message) {
            /*
             * Handle parent scroll message from child.
             */
             if (!_isSafeUrl(message)) {return;}
            document.location.href = message;
        };

        /**
         * Scroll parent to a given child position.
         *
         * @memberof module:pym.Parent
         * @method _onScrollToChildPosMessage
         * @inner
         *
         * @param {String} message The offset inside the child page.
         */
        this._onScrollToChildPosMessage = function(message) {
            // Get the child container position using getBoundingClientRect + pageYOffset
            // via https://developer.mozilla.org/en-US/docs/Web/API/Element/getBoundingClientRect
            var iframePos = document.getElementById(this.id).getBoundingClientRect().top + window.pageYOffset;

            var totalOffset = iframePos + parseInt(message);
            window.scrollTo(0, totalOffset);
        };

        /**
         * Bind a callback to a given messageType from the child.
         *
         * Reserved message names are: "height", "scrollTo" and "navigateTo".
         *
         * @memberof module:pym.Parent
         * @method onMessage
         * @instance
         *
         * @param {String} messageType The type of message being listened for.
         * @param {module:pym.Parent~onMessageCallback} callback The callback to invoke when a message of the given type is received.
         */
        this.onMessage = function(messageType, callback) {
            if (!(messageType in this.messageHandlers)) {
                this.messageHandlers[messageType] = [];
            }

            this.messageHandlers[messageType].push(callback);
        };

        /**
         * @callback module:pym.Parent~onMessageCallback
         * @param {String} message The message data.
         */

        /**
         * Send a message to the the child.
         *
         * @memberof module:pym.Parent
         * @method sendMessage
         * @instance
         *
         * @param {String} messageType The type of message to send.
         * @param {String} message The message data to send.
         */
        this.sendMessage = function(messageType, message) {
            // When used alongside with pjax some references are lost
            if (this.el.getElementsByTagName('iframe').length) {
                if (this.el.getElementsByTagName('iframe')[0].contentWindow) {
                    this.el.getElementsByTagName('iframe')[0].contentWindow
                        .postMessage(_makeMessage(this.id, messageType, message), '*');
                }
                else {
                    // Contentless child detected remove listeners and iframe
                    this.remove();
                }
            }
        };

        /**
         * Transmit the current iframe width to the child.
         *
         * You shouldn't need to call this directly.
         *
         * @memberof module:pym.Parent
         * @method sendWidth
         * @instance
         */
        this.sendWidth = function() {
            var width = this.el.offsetWidth.toString();
            this.sendMessage('width', width);
        };

        /**
         * Transmit the current viewport and iframe position to the child.
         * Sends viewport width, viewport height
         * and iframe bounding rect top-left-bottom-right
         * all separated by spaces
         *
         * You shouldn't need to call this directly.
         *
         * @memberof module:pym.Parent
         * @method sendViewportAndIFramePosition
         * @instance
         */
        this.sendViewportAndIFramePosition = function() {
            var iframeRect = this.iframe.getBoundingClientRect();
            var vWidth   = window.innerWidth || document.documentElement.clientWidth;
            var vHeight  = window.innerHeight || document.documentElement.clientHeight;
            var payload = vWidth + ' ' + vHeight;
            payload += ' ' + iframeRect.top + ' ' + iframeRect.left;
            payload += ' ' + iframeRect.bottom + ' ' + iframeRect.right;
            this.sendMessage('viewport-iframe-position', payload);
        };

        // Add any overrides to settings coming from config.
        for (var key in config) {
            this.settings[key] = config[key];
        }

        /**
         * Throttled scroll function.
         *
         * @memberof module:pym.Parent
         * @method _throttleOnScroll
         * @inner
         */
        this._throttleOnScroll = _throttle(this._onScroll.bind(this), this.settings.scrollwait);

        // Bind required message handlers
        this.onMessage('height', this._onHeightMessage);
        this.onMessage('navigateTo', this._onNavigateToMessage);
        this.onMessage('scrollToChildPos', this._onScrollToChildPosMessage);
        this.onMessage('parentPositionInfo', this.sendViewportAndIFramePosition);

        // Add a listener for processing messages from the child.
        window.addEventListener('message', this._processMessage, false);

        // Construct the iframe in the container element.
        this._constructIframe();

        return this;
    };

    /**
     * The Child half of a responsive iframe.
     *
     * @memberof module:pym
     * @class Child
     * @param {Object} [config] Configuration for the child instance. sets {@link module:pym.Child~settings}
     * @param {function} [config.renderCallback=null] Callback invoked after receiving a resize event from the parent, sets {@link module:pym.Child#settings.renderCallback}
     * @param {string} [config.xdomain='*'] - xdomain to validate messages received
     * @param {number} [config.polling=0] - polling frequency in milliseconds to send height to parent
     * @param {number} [config.id] - parent container id used when navigating the child iframe to a new page but we want to keep it responsive.
     * @param {string} [config.parenturlparam] - if passed it will be override the default parentUrl query string parameter name expected on the iframe src
     */
    lib.Child = function(config) {
        /**
         * The initial width of the parent page
         *
         * @memberof module:pym.Child
         * @member {string} parentWidth
         * @inner
         */
        this.parentWidth = null;
        /**
         * The id of the parent container
         *
         * @memberof module:pym.Child
         * @member {String} id
         * @inner
         */
        this.id = null;
        /**
         * The title of the parent page from document.title.
         *
         * @memberof module:pym.Child
         * @member {String} parentTitle
         * @inner
         */
        this.parentTitle = null;
        /**
         * The URL of the parent page from window.location.href.
         *
         * @memberof module:pym.Child
         * @member {String} parentUrl
         * @inner
         */
        this.parentUrl = null;
        /**
         * The settings for the child instance. Can be overriden by passing a config object to the child constructor
         * i.e.: var pymChild = new pym.Child({renderCallback: render, xdomain: "\\*\.npr\.org"})
         *
         * @memberof module:pym.Child.settings
         * @member {Object} settings - default settings for the child instance
         * @inner
         */
        this.settings = {
            renderCallback: null,
            xdomain: '*',
            polling: 0,
            parenturlparam: 'parentUrl'
        };

        /**
         * The timerId in order to be able to stop when polling is enabled
         *
         * @memberof module:pym.Child
         * @member {String} timerId
         * @inner
         */
        this.timerId = null;
        /**
         * RegularExpression to validate the received messages
         *
         * @memberof module:pym.Child
         * @member {String} messageRegex
         * @inner
         */
        this.messageRegex = null;
        /**
         * Stores the registered messageHandlers for each messageType
         *
         * @memberof module:pym.Child
         * @member {Object} messageHandlers
         * @inner
         */
        this.messageHandlers = {};

        // Ensure a config object
        config = (config || {});

        /**
         * Bind a callback to a given messageType from the child.
         *
         * Reserved message names are: "width".
         *
         * @memberof module:pym.Child
         * @method onMessage
         * @instance
         *
         * @param {String} messageType The type of message being listened for.
         * @param {module:pym.Child~onMessageCallback} callback The callback to invoke when a message of the given type is received.
         */
        this.onMessage = function(messageType, callback) {

            if (!(messageType in this.messageHandlers)) {
                this.messageHandlers[messageType] = [];
            }

            this.messageHandlers[messageType].push(callback);
        };

        /**
         * @callback module:pym.Child~onMessageCallback
         * @param {String} message The message data.
         */


        /**
         * Fire all event handlers for a given message type.
         *
         * @memberof module:pym.Child
         * @method _fire
         * @inner
         *
         * @param {String} messageType The type of message.
         * @param {String} message The message data.
         */
        this._fire = function(messageType, message) {
            /*
             * Fire all event handlers for a given message type.
             */
            if (messageType in this.messageHandlers) {
                for (var i = 0; i < this.messageHandlers[messageType].length; i++) {
                   this.messageHandlers[messageType][i].call(this, message);
                }
            }
        };

        /**
         * Process a new message from the parent.
         *
         * @memberof module:pym.Child
         * @method _processMessage
         * @inner
         *
         * @param {Event} e A message event.
         */
        this._processMessage = function(e) {
            /*
            * Process a new message from parent frame.
            */
            // First, punt if this isn't from an acceptable xdomain.
            if (!_isSafeMessage(e, this.settings)) {
                return;
            }

            // Discard object messages, we only care about strings
            if (typeof e.data !== 'string') {
                return;
            }

            // Get the message from the parent.
            var match = e.data.match(this.messageRegex);

            // If there's no match or it's a bad format, punt.
            if (!match || match.length !== 3) { return; }

            var messageType = match[1];
            var message = match[2];

            this._fire(messageType, message);
        }.bind(this);

        /**
         * Resize iframe in response to new width message from parent.
         *
         * @memberof module:pym.Child
         * @method _onWidthMessage
         * @inner
         *
         * @param {String} message The new width.
         */
        this._onWidthMessage = function(message) {
            /*
             * Handle width message from the child.
             */
            var width = parseInt(message);

            // Change the width if it's different.
            if (width !== this.parentWidth) {
                this.parentWidth = width;

                // Call the callback function if it exists.
                if (this.settings.renderCallback) {
                    this.settings.renderCallback(width);
                }

                // Send the height back to the parent.
                this.sendHeight();
            }
        };

        /**
         * Send a message to the the Parent.
         *
         * @memberof module:pym.Child
         * @method sendMessage
         * @instance
         *
         * @param {String} messageType The type of message to send.
         * @param {String} message The message data to send.
         */
        this.sendMessage = function(messageType, message) {
            /*
             * Send a message to the parent.
             */
            window.parent.postMessage(_makeMessage(this.id, messageType, message), '*');
        };

        /**
         * Transmit the current iframe height to the parent.
         *
         * Call this directly in cases where you manually alter the height of the iframe contents.
         *
         * @memberof module:pym.Child
         * @method sendHeight
         * @instance
         */
        this.sendHeight = function() {
            // Get the child's height.
            var height = document.getElementsByTagName('body')[0].offsetHeight.toString();

            // Send the height to the parent.
            this.sendMessage('height', height);

            return height;
        }.bind(this);

        /**
         * Ask parent to send the current viewport and iframe position information
         *
         * @memberof module:pym.Child
         * @method sendHeight
         * @instance
         */
        this.getParentPositionInfo = function() {
            // Send the height to the parent.
            this.sendMessage('parentPositionInfo');
        };

        /**
         * Scroll parent to a given element id.
         *
         * @memberof module:pym.Child
         * @method scrollParentTo
         * @instance
         *
         * @param {String} hash The id of the element to scroll to.
         */
        this.scrollParentTo = function(hash) {
            this.sendMessage('navigateTo', '#' + hash);
        };

        /**
         * Navigate parent to a given url.
         *
         * @memberof module:pym.Child
         * @method navigateParentTo
         * @instance
         *
         * @param {String} url The url to navigate to.
         */
        this.navigateParentTo = function(url) {
            this.sendMessage('navigateTo', url);
        };

        /**
         * Scroll parent to a given child element id.
         *
         * @memberof module:pym.Child
         * @method scrollParentToChildEl
         * @instance
         *
         * @param {String} id The id of the child element to scroll to.
         */
        this.scrollParentToChildEl = function(id) {
            // Get the child element position using getBoundingClientRect + pageYOffset
            // via https://developer.mozilla.org/en-US/docs/Web/API/Element/getBoundingClientRect
            var topPos = document.getElementById(id).getBoundingClientRect().top + window.pageYOffset;
            this.scrollParentToChildPos(topPos);
        };

        /**
         * Scroll parent to a particular child offset.
         *
         * @memberof module:pym.Child
         * @method scrollParentToChildPos
         * @instance
         *
         * @param {Number} pos The offset of the child element to scroll to.
         */
        this.scrollParentToChildPos = function(pos) {
            this.sendMessage('scrollToChildPos', pos.toString());
        };

        /**
         * Mark Whether the child is embedded or not
         * executes a callback in case it was passed to the config
         *
         * @memberof module:pym.Child
         * @method _markWhetherEmbedded
         * @inner
         *
         * @param {module:pym.Child~onMarkedEmbeddedStatus} The callback to execute after determining whether embedded or not.
         */
        var _markWhetherEmbedded = function(onMarkedEmbeddedStatus) {
          var htmlElement = document.getElementsByTagName('html')[0],
              newClassForHtml,
              originalHtmlClasses = htmlElement.className;
          try {
            if(window.self !== window.top) {
              newClassForHtml = "embedded";
            }else{
              newClassForHtml = "not-embedded";
            }
          }catch(e) {
            newClassForHtml = "embedded";
          }
          if(originalHtmlClasses.indexOf(newClassForHtml) < 0) {
            htmlElement.className = originalHtmlClasses ? originalHtmlClasses + ' ' + newClassForHtml : newClassForHtml;
            if(onMarkedEmbeddedStatus){
              onMarkedEmbeddedStatus(newClassForHtml);
            }
            _raiseCustomEvent("marked-embedded");
          }
        };

        /**
         * @callback module:pym.Child~onMarkedEmbeddedStatus
         * @param {String} classname "embedded" or "not-embedded".
         */

        /**
         * Unbind child event handlers and timers.
         *
         * @memberof module:pym.Child
         * @method remove
         * @instance
         */
        this.remove = function() {
            window.removeEventListener('message', this._processMessage);
            if (this.timerId) {
                clearInterval(this.timerId);
            }
        };

        // Initialize settings with overrides.
        for (var key in config) {
            this.settings[key] = config[key];
        }

        // Identify what ID the parent knows this child as.
        this.id = _getParameterByName('childId') || config.id;
        this.messageRegex = new RegExp('^pym' + MESSAGE_DELIMITER + this.id + MESSAGE_DELIMITER + '(\\S+)' + MESSAGE_DELIMITER + '(.*)$');

        // Get the initial width from a URL parameter.
        var width = parseInt(_getParameterByName('initialWidth'));

        // Get the url of the parent frame
        this.parentUrl = _getParameterByName(this.settings.parenturlparam);

        // Get the title of the parent frame
        this.parentTitle = _getParameterByName('parentTitle');

        // Bind the required message handlers
        this.onMessage('width', this._onWidthMessage);

        // Set up a listener to handle any incoming messages.
        window.addEventListener('message', this._processMessage, false);

        // If there's a callback function, call it.
        if (this.settings.renderCallback) {
            this.settings.renderCallback(width);
        }

        // Send the initial height to the parent.
        this.sendHeight();

        // If we're configured to poll, create a setInterval to handle that.
        if (this.settings.polling) {
            this.timerId = window.setInterval(this.sendHeight, this.settings.polling);
        }

        _markWhetherEmbedded(config.onMarkedEmbeddedStatus);

        return this;
    };

    // Initialize elements with pym data attributes
    // if we are not in server configuration
    if(typeof document !== "undefined") {
        lib.autoInit(true);
    }

    return lib;
});



/***/ }),

/***/ 18:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
    value: true
});

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _underscore = __webpack_require__(2);

var _ = _interopRequireWildcard(_underscore);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var instance = null;

var ApplicationConfigService = function () {
    function ApplicationConfigService(config) {
        _classCallCheck(this, ApplicationConfigService);

        // if( !instance ) {
        //     instance = this;
        // }
        this.configuration = config;
        // return instance;
    }

    _createClass(ApplicationConfigService, [{
        key: 'get',
        value: function get(configKey) {
            if (configKey !== undefined) {
                var foundValue = this._findKeyValue(configKey || this.configuration);
                switch (typeof foundValue === 'undefined' ? 'undefined' : _typeof(foundValue)) {
                    case 'string':
                        return foundValue;
                    default:
                        return foundValue ? foundValue : null;

                }
            }

            return this.configuration;
        }
    }, {
        key: 'set',
        value: function set(configKey, value) {
            if (configKey !== undefined) {
                if (_typeof(this.configuration[configKey]) === 'object') {
                    // merge
                    this.configuration[configKey] = _.extend({}, this.configuration[configKey], value);
                } else {
                    this.configuration[configKey] = value;
                }
            }
        }

        // @TODO cast

    }, {
        key: '_findKeyValue',
        value: function _findKeyValue(configName) {
            if (!configName) {
                return undefined;
            }

            var isStr = _.isString(configName);
            var name = isStr ? configName : configName.name;
            var path = configName.indexOf('.') > 0 ? true : false;

            if (path) {
                return this._search(this.configuration, name);
            }
            var state = this.configuration[name];
            if (state && (isStr || !isStr && state === configName)) {
                return state;
            } else if (isStr) {
                return state;
            }
            return undefined;
        }

        // @TODO cast

    }, {
        key: '_search',
        value: function _search(obj, path) {
            if (_.isNumber(path)) {
                path = [path];
            }
            if (_.isEmpty(path)) {
                return obj;
            }
            if (_.isEmpty(obj)) {
                return null;
            }
            if (_.isString(path)) {
                return this._search(obj, path.split('.'));
            }

            var currentPath = path[0];

            if (path.length === 1) {
                if (obj[currentPath] === void 0) {
                    return null;
                }
                return obj[currentPath];
            }

            return this._search(obj[currentPath], path.slice(1));
        }
    }]);

    return ApplicationConfigService;
}();

exports.default = ApplicationConfigService;

/***/ }),

/***/ 19:
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/* WEBPACK VAR INJECTION */(function(jQuery) {

// @TODO enable lints
/* eslint-disable max-len*/
/* eslint-disable object-shorthand*/
/* eslint-disable dot-notation*/
/* eslint-disable vars-on-top*/
/* eslint-disable prefer-template*/
/* eslint-disable prefer-const*/
/* eslint-disable spaced-comment*/
/* eslint-disable curly*/
/* eslint-disable object-curly-spacing*/
/* eslint-disable spaced-comment*/
/* eslint-disable prefer-arrow-callback*/
/* eslint-disable one-var*/
/* eslint-disable space-in-parens*/
/* eslint-disable camelcase*/
/* eslint-disable no-undef*/
/* eslint-disable quote-props*/
/* eslint-disable no-shadow*/
/* eslint-disable no-param-reassign*/
/* eslint-disable no-unused-expressions*/
/* eslint-disable no-shadow*/
/* eslint-disable no-implied-eval*/
/* eslint-disable brace-style*/
/* eslint-disable no-unused-vars*/
/* eslint-disable brace-style*/
/* eslint-disable no-lonely-if*/
/* eslint-disable no-inline-comments*/
/* eslint-disable default-case*/
/* eslint-disable one-var*/
/* eslint-disable semi*/
/* eslint-disable no-throw-literal*/
/* eslint-disable no-sequences*/
/* eslint-disable consistent-this*/
/* eslint-disable no-dupe-keys*/
/* eslint-disable semi*/
/* eslint-disable no-loop-func*/
/* eslint-disable space-after-keywords*/
/* eslint-disable no-var*/
/* eslint-disable quotes*/

/**
 * Copyright (c)2005-2009 Matt Kruse (javascripttoolbox.com)
 *
 * Dual licensed under the MIT and GPL licenses.
 * This basically means you can use this code however you want for
 * free, but don't claim to have written it yourself!
 * Donations always accepted: http://www.JavascriptToolbox.com/donate/
 *
 * Please do not link to the .js files on javascripttoolbox.com from
 * your site. Copy the files locally to your server instead.
 *
 */
/**
 * jquery.contextmenu.js
 * jQuery Plugin for Context Menus
 * http://www.JavascriptToolbox.com/lib/contextmenu/
 *
 * Copyright (c) 2008 Matt Kruse (javascripttoolbox.com)
 * Dual licensed under the MIT and GPL licenses.
 *
 * @version 1.0
 * @history 1.0 2008-10-20 Initial Release
 * @todo slideUp doesn't work in IE - because of iframe?
 * @todo Hide all other menus when contextmenu is shown?
 * @todo More themes
 * @todo Nested context menus
 */

(function ($) {
    $.contextMenu = {
        // props add by Alchemy
        _showEvent: null, // the original event the caused the menu to show (useful to find the original element clicked)
        _div: null,
        //
        openEvt: "contextmenu", // ouverture sur right-click
        closeTimer: null, // fermer le menu apres 100ms de mouseout

        shadow: true,
        dropDown: false,
        shadowOffset: 0,
        shadowOffsetX: 5,
        shadowOffsetY: 5,
        shadowWidthAdjust: -3,
        shadowHeightAdjust: -3,
        shadowOpacity: 0.2,
        shadowClass: 'context-menu-shadow',
        shadowColor: 'black',

        offsetX: 0,
        offsetY: 0,
        appendTo: 'body',
        direction: 'down',
        constrainToScreen: true,

        showTransition: 'show',
        hideTransition: 'hide',
        showSpeed: '',
        hideSpeed: '',
        showCallback: null,
        hideCallback: null,

        className: 'context-menu',
        itemClassName: 'context-menu-item',
        itemHoverClassName: 'context-menu-item-hover',
        disabledItemClassName: 'context-menu-item-disabled',
        disabledItemHoverClassName: 'context-menu-item-disabled-hover',
        separatorClassName: 'context-menu-separator',
        innerDivClassName: 'context-menu-item-inner',
        themePrefix: 'context-menu-theme-',
        theme: 'default',

        separator: 'context-menu-separator', // A specific key to identify a separator
        target: null, // The target of the context click, to be populated when triggered
        menu: null, // The jQuery object containing the HTML object that is the menu itself
        shadowObj: null, // Shadow object
        bgiframe: null, // The iframe object for IE6
        shown: false, // Currently being shown?
        useIframe: /*@cc_on @*/ /*@if (@_win32) true, @else @*/false, /*@end @*/ // This is a better check than looking at userAgent!

        // Create the menu instance
        create: function create(menu, opts) {
            var cmenu = $.extend({}, this, opts); // Clone all default properties to created object

            // If a selector has been passed in, then use that as the menu
            if (typeof menu === "string") {
                cmenu.menu = $(menu);
            }
            // If a function has been passed in, call it each time the menu is shown to create the menu
            else if (typeof menu === "function") {
                    cmenu.menuFunction = menu;
                }
                // Otherwise parse the Array passed in
                else {
                        cmenu.menu = cmenu.createMenu(menu, cmenu);
                    }
            if (cmenu.menu) {
                cmenu.menu.css({ display: 'none' });
                $(cmenu.appendTo).append(cmenu.menu);
            }

            // Create the shadow object if shadow is enabled
            if (cmenu.shadow) {
                cmenu.createShadow(cmenu); // Extracted to method for extensibility
                if (cmenu.shadowOffset) {
                    cmenu.shadowOffsetX = cmenu.shadowOffsetY = cmenu.shadowOffset;
                }
            }
            $('body').bind(cmenu.openEvt, function () {
                cmenu.hide();
            }); // If right-clicked somewhere else in the document, hide this menu
            return cmenu;
        },

        // Create an iframe object to go behind the menu
        createIframe: function createIframe() {
            return $('<iframe frameborder="0" tabindex="-1" src="javascript:false" style="display:block;position:absolute;z-index:-1;filter:Alpha(Opacity=0);"/>');
        },

        // Accept an Array representing a menu structure and turn it into HTML
        createMenu: function createMenu(menu, cmenu) {
            var className = cmenu.className;
            $.each(cmenu.theme.split(","), function (i, n) {
                className += ' ' + cmenu.themePrefix + n;
            });
            //			var $t = $('<div style="background-color:#ffff00; xwidth:200px; height:200px"><table style="" cellspacing=0 cellpadding=0></table></div>').click(function(){cmenu.hide(); return false;}); // We wrap a table around it so width can be flexible
            var $t = $('<table style="" cellspacing="0" cellpadding="0"></table>').click(function () {
                cmenu.hide();
                return false;
            }); // We wrap a table around it so width can be flexible
            var $tr = $('<tr></tr>');
            var $td = $('<td></td>');
            var $div = cmenu._div = $('<div class="' + className + '"></div>');

            cmenu._div.hover(function () {
                if (cmenu.closeTimer) {
                    clearTimeout(cmenu.closeTimer);
                    cmenu.closeTimer = null;
                }
            }, function () {
                var myClass = cmenu;

                function timerRelay() {
                    myClass.hide();
                }

                myClass.closeTimer = setTimeout(timerRelay, 500);
            });

            // Each menu item is specified as either:
            //     title:function
            // or  title: { property:value ... }
            /*
             for (var i=0; i<menu.length; i++) {
             var m = menu[i];
             if (m==$.contextMenu.separator) {
             $div.append(cmenu.createSeparator());
             }
             else {
             for (var opt in menu[i]) {
             $div.append(cmenu.createMenuItem(opt,menu[i][opt])); // Extracted to method for extensibility
             }
             }
             }
             */
            for (var i = 0; i < menu.length; i++) {
                var m = menu[i];
                if (m === $.contextMenu.separator) {
                    $div.append(cmenu.createSeparator());
                } else {
                    $div.append(cmenu.createMenuItem(m)); // Extracted to method for extensibility
                }
            }
            if (cmenu.useIframe) {
                $td.append(cmenu.createIframe());
            }
            $t.append($tr.append($td.append($div)));
            return $t;
        },

        // Create an individual menu item
        createMenuItem: function createMenuItem(obj) {
            var cmenu = this;
            var label = obj.label;
            if (typeof obj === "function") {
                obj = { onclick: obj };
            } // If passed a simple function, turn it into a property of an object
            // Default properties, extended in case properties are passed
            var o = $.extend({
                onclick: function onclick() {},
                className: '',
                hoverClassName: cmenu.itemHoverClassName,
                icon: '',
                disabled: false,
                title: '',
                hoverItem: cmenu.hoverItem,
                hoverItemOut: cmenu.hoverItemOut
            }, obj);
            // If an icon is specified, hard-code the background-image style. Themes that don't show images should take this into account in their CSS
            var iconStyle = o.icon ? 'background-image:url(' + o.icon + ');' : '';
            var $div = $('<div class="' + cmenu.itemClassName + ' ' + o.className + (o.disabled ? ' ' + cmenu.disabledItemClassName : '') + '" title="' + o.title + '"></div>')
            // If the item is disabled, don't do anything when it is clicked
            .click(function (e) {
                if (cmenu.isItemDisabled(this)) {
                    return false;
                } else {
                    return o.onclick.call(cmenu.target, this, cmenu, e, label);
                }
            })
            // Change the class of the item when hovered over
            .hover(function () {
                o.hoverItem.call(this, cmenu.isItemDisabled(this) ? cmenu.disabledItemHoverClassName : o.hoverClassName);
            }, function () {
                o.hoverItemOut.call(this, cmenu.isItemDisabled(this) ? cmenu.disabledItemHoverClassName : o.hoverClassName);
            });
            var $idiv = $('<div class="' + cmenu.innerDivClassName + '" style="' + iconStyle + '">' + label + '</div>');
            $div.append($idiv);
            return $div;
        },

        // Create a separator row
        createSeparator: function createSeparator() {
            return $('<div class="' + this.separatorClassName + '"></div>');
        },

        // Determine if an individual item is currently disabled. This is called each time the item is hovered or clicked because the disabled status may change at any time
        isItemDisabled: function isItemDisabled(item) {
            return $(item).is('.' + this.disabledItemClassName);
        },

        // Functions to fire on hover. Extracted to methods for extensibility
        hoverItem: function hoverItem(c) {
            $(this).addClass(c);
        },
        hoverItemOut: function hoverItemOut(c) {
            $(this).removeClass(c);
        },

        // Create the shadow object
        createShadow: function createShadow(cmenu) {
            cmenu.shadowObj = $('<div class="' + cmenu.shadowClass + '"></div>').css({
                display: 'none',
                position: "absolute",
                zIndex: 9998,
                opacity: cmenu.shadowOpacity,
                backgroundColor: cmenu.shadowColor
            });
            $(cmenu.appendTo).append(cmenu.shadowObj);
        },

        // Display the shadow object, given the position of the menu itself
        showShadow: function showShadow(x, y, e) {
            var cmenu = this;
            if (cmenu.shadow) {
                cmenu.shadowObj.css({
                    width: cmenu.menu.width() + cmenu.shadowWidthAdjust + "px",
                    height: cmenu.menu.height() + cmenu.shadowHeightAdjust + "px",
                    top: y + cmenu.shadowOffsetY + "px",
                    left: x + cmenu.shadowOffsetX + "px"
                }).addClass(cmenu.shadowClass)[cmenu.showTransition](cmenu.showSpeed);
            }
        },

        // A hook to call before the menu is shown, in case special processing needs to be done.
        // Return false to cancel the default show operation
        beforeShow: function beforeShow() {
            return true;
        },

        // Show the context menu
        show: function show(t, e) {
            var cmenu = this,
                x = e.pageX,
                y = e.pageY;

            if (cmenu._div) cmenu._div.css('height', 'auto').css('overflow-y', 'auto');

            cmenu.target = t; // Preserve the object that triggered this context menu so menu item click methods can see it
            cmenu._showEvent = e; // Preserve the event that triggered this context menu so menu item click methods can see it
            if (cmenu.beforeShow() !== false) {
                // If the menu content is a function, call it to populate the menu each time it is displayed
                if (cmenu.menuFunction) {
                    if (cmenu.menu) {
                        $(cmenu.menu).remove();
                    }
                    cmenu.menu = cmenu.createMenu(cmenu.menuFunction(cmenu, t), cmenu);
                    cmenu.menu.css({ display: 'none' });
                    $(cmenu.appendTo).append(cmenu.menu);
                }
                var $c = cmenu.menu;
                x += cmenu.offsetX;
                y += cmenu.offsetY;
                var pos = cmenu.getPosition(x, y, cmenu, e); // Extracted to method for extensibility
                cmenu.showShadow(pos.x, pos.y, e);
                // Resize the iframe if needed
                if (cmenu.useIframe) {
                    $c.find('iframe').css({
                        width: $c.width() + cmenu.shadowOffsetX + cmenu.shadowWidthAdjust,
                        height: $c.height() + cmenu.shadowOffsetY + cmenu.shadowHeightAdjust
                    });
                }
                if (cmenu.dropDown) {
                    $c.css('visibility', 'hidden').show();

                    var bodySize = { x: $(window).width(), y: $(window).height() };

                    if ($(t).offset().top + $(t).outerHeight() + $c.height() > bodySize.y) {
                        if ($(t).offset().left + $(t).outerWidth() + $c.width() > bodySize.x) $c.css({
                            top: $(t).offset().top - $c.outerHeight() + "px",
                            left: $(t).offset().left - $c.outerWidth() + "px",
                            position: "absolute",
                            zIndex: 9999
                        })[cmenu.showTransition](cmenu.showSpeed, cmenu.showCallback ? function () {
                            cmenu.showCallback.call(cmenu);
                        } : null);else $c.css({
                            top: $(t).offset().top - $c.outerHeight() + "px",
                            left: $(t).offset().left + "px",
                            position: "absolute",
                            zIndex: 9999
                        })[cmenu.showTransition](cmenu.showSpeed, cmenu.showCallback ? function () {
                            cmenu.showCallback.call(cmenu);
                        } : null);
                    } else {

                        if ($(t).offset().left + $(t).outerWidth() + $c.width() > bodySize.x) $c.css({
                            top: $(t).offset().top + $(t).outerHeight() + "px",
                            left: $(t).offset().left - $c.outerWidth() + "px",
                            position: "absolute",
                            zIndex: 9999
                        })[cmenu.showTransition](cmenu.showSpeed, cmenu.showCallback ? function () {
                            cmenu.showCallback.call(cmenu);
                        } : null);else $c.css({
                            top: $(t).offset().top + $(t).outerHeight() + "px",
                            left: $(t).offset().left + "px",
                            position: "absolute",
                            zIndex: 9999
                        })[cmenu.showTransition](cmenu.showSpeed, cmenu.showCallback ? function () {
                            cmenu.showCallback.call(cmenu);
                        } : null);
                    }
                    $c.css('visibility', 'visible');
                } else $c.css({
                    top: pos.y + "px",
                    left: pos.x + "px",
                    position: "absolute",
                    zIndex: 9999
                })[cmenu.showTransition](cmenu.showSpeed, cmenu.showCallback ? function () {
                    cmenu.showCallback.call(cmenu);
                } : null);
                cmenu.shown = true;
                $(document).one('click', null, function () {
                    cmenu.hide();
                }); // Handle a single click to the document to hide the menu
            }
        },

        // Find the position where the menu should appear, given an x,y of the click event
        getPosition: function getPosition(clickX, clickY, cmenu, e) {
            var x = clickX + cmenu.offsetX;
            var y = clickY + cmenu.offsetY;
            var h = $(cmenu.menu).height();
            var w = $(cmenu.menu).width();
            var dir = cmenu.direction;
            if (cmenu.constrainToScreen) {
                var $w = $(window);
                var wh = $w.height();
                var ww = $w.width();
                var st = $w.scrollTop();
                var maxTop = y - st - 5;
                var maxBottom = wh + st - y - 5;
                if (h > maxBottom) {
                    if (h > maxTop) {
                        if (maxTop > maxBottom) {
                            // scrollable en haut
                            h = maxTop;
                            cmenu._div.css('height', h + 'px').css('overflow-y', 'scroll');
                            y -= h;
                        } else {
                            // scrollable en bas
                            h = maxBottom;
                            cmenu._div.css('height', h + 'px').css('overflow-y', 'scroll');
                        }
                    } else {
                        // menu ok en haut
                        y -= h;
                    }
                } else {
                    // menu ok en bas
                }

                var maxRight = x + w - $w.scrollLeft();
                if (maxRight > ww) {
                    x -= maxRight - ww;
                }
            }
            return { 'x': x, 'y': y };
        },

        // Hide the menu, of course
        hide: function hide() {
            var cmenu = this;
            if (cmenu.shown) {
                if (cmenu.iframe) {
                    $(cmenu.iframe).hide();
                }
                if (cmenu.menu) {
                    cmenu.menu[cmenu.hideTransition](cmenu.hideSpeed, cmenu.hideCallback ? function () {
                        cmenu.hideCallback.call(cmenu);
                    } : null);
                }
                if (cmenu.shadow) {
                    cmenu.shadowObj[cmenu.hideTransition](cmenu.hideSpeed);
                }
            }
            cmenu.shown = false;
        }
    };

    // This actually adds the .contextMenu() function to the jQuery namespace
    $.fn.contextMenu = function (menu, options) {
        var cmenu = $.contextMenu.create(menu, options);
        return this.each(function () {
            $(this).bind(cmenu.openEvt, function (e) {
                if (cmenu.menu.is(':visible')) cmenu.hide();else {
                    $('body').trigger(cmenu.openEvt);
                    cmenu.show(this, e);
                }
                return false;
            }).bind('mouseover', function () {
                return false;
            });
        });
    };
})(jQuery);
/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(0)))

/***/ }),

/***/ 2:
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(global, module) {var __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;//     Underscore.js 1.9.1
//     http://underscorejs.org
//     (c) 2009-2018 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
//     Underscore may be freely distributed under the MIT license.

(function() {

  // Baseline setup
  // --------------

  // Establish the root object, `window` (`self`) in the browser, `global`
  // on the server, or `this` in some virtual machines. We use `self`
  // instead of `window` for `WebWorker` support.
  var root = typeof self == 'object' && self.self === self && self ||
            typeof global == 'object' && global.global === global && global ||
            this ||
            {};

  // Save the previous value of the `_` variable.
  var previousUnderscore = root._;

  // Save bytes in the minified (but not gzipped) version:
  var ArrayProto = Array.prototype, ObjProto = Object.prototype;
  var SymbolProto = typeof Symbol !== 'undefined' ? Symbol.prototype : null;

  // Create quick reference variables for speed access to core prototypes.
  var push = ArrayProto.push,
      slice = ArrayProto.slice,
      toString = ObjProto.toString,
      hasOwnProperty = ObjProto.hasOwnProperty;

  // All **ECMAScript 5** native function implementations that we hope to use
  // are declared here.
  var nativeIsArray = Array.isArray,
      nativeKeys = Object.keys,
      nativeCreate = Object.create;

  // Naked function reference for surrogate-prototype-swapping.
  var Ctor = function(){};

  // Create a safe reference to the Underscore object for use below.
  var _ = function(obj) {
    if (obj instanceof _) return obj;
    if (!(this instanceof _)) return new _(obj);
    this._wrapped = obj;
  };

  // Export the Underscore object for **Node.js**, with
  // backwards-compatibility for their old module API. If we're in
  // the browser, add `_` as a global object.
  // (`nodeType` is checked to ensure that `module`
  // and `exports` are not HTML elements.)
  if (typeof exports != 'undefined' && !exports.nodeType) {
    if (typeof module != 'undefined' && !module.nodeType && module.exports) {
      exports = module.exports = _;
    }
    exports._ = _;
  } else {
    root._ = _;
  }

  // Current version.
  _.VERSION = '1.9.1';

  // Internal function that returns an efficient (for current engines) version
  // of the passed-in callback, to be repeatedly applied in other Underscore
  // functions.
  var optimizeCb = function(func, context, argCount) {
    if (context === void 0) return func;
    switch (argCount == null ? 3 : argCount) {
      case 1: return function(value) {
        return func.call(context, value);
      };
      // The 2-argument case is omitted because we’re not using it.
      case 3: return function(value, index, collection) {
        return func.call(context, value, index, collection);
      };
      case 4: return function(accumulator, value, index, collection) {
        return func.call(context, accumulator, value, index, collection);
      };
    }
    return function() {
      return func.apply(context, arguments);
    };
  };

  var builtinIteratee;

  // An internal function to generate callbacks that can be applied to each
  // element in a collection, returning the desired result — either `identity`,
  // an arbitrary callback, a property matcher, or a property accessor.
  var cb = function(value, context, argCount) {
    if (_.iteratee !== builtinIteratee) return _.iteratee(value, context);
    if (value == null) return _.identity;
    if (_.isFunction(value)) return optimizeCb(value, context, argCount);
    if (_.isObject(value) && !_.isArray(value)) return _.matcher(value);
    return _.property(value);
  };

  // External wrapper for our callback generator. Users may customize
  // `_.iteratee` if they want additional predicate/iteratee shorthand styles.
  // This abstraction hides the internal-only argCount argument.
  _.iteratee = builtinIteratee = function(value, context) {
    return cb(value, context, Infinity);
  };

  // Some functions take a variable number of arguments, or a few expected
  // arguments at the beginning and then a variable number of values to operate
  // on. This helper accumulates all remaining arguments past the function’s
  // argument length (or an explicit `startIndex`), into an array that becomes
  // the last argument. Similar to ES6’s "rest parameter".
  var restArguments = function(func, startIndex) {
    startIndex = startIndex == null ? func.length - 1 : +startIndex;
    return function() {
      var length = Math.max(arguments.length - startIndex, 0),
          rest = Array(length),
          index = 0;
      for (; index < length; index++) {
        rest[index] = arguments[index + startIndex];
      }
      switch (startIndex) {
        case 0: return func.call(this, rest);
        case 1: return func.call(this, arguments[0], rest);
        case 2: return func.call(this, arguments[0], arguments[1], rest);
      }
      var args = Array(startIndex + 1);
      for (index = 0; index < startIndex; index++) {
        args[index] = arguments[index];
      }
      args[startIndex] = rest;
      return func.apply(this, args);
    };
  };

  // An internal function for creating a new object that inherits from another.
  var baseCreate = function(prototype) {
    if (!_.isObject(prototype)) return {};
    if (nativeCreate) return nativeCreate(prototype);
    Ctor.prototype = prototype;
    var result = new Ctor;
    Ctor.prototype = null;
    return result;
  };

  var shallowProperty = function(key) {
    return function(obj) {
      return obj == null ? void 0 : obj[key];
    };
  };

  var has = function(obj, path) {
    return obj != null && hasOwnProperty.call(obj, path);
  }

  var deepGet = function(obj, path) {
    var length = path.length;
    for (var i = 0; i < length; i++) {
      if (obj == null) return void 0;
      obj = obj[path[i]];
    }
    return length ? obj : void 0;
  };

  // Helper for collection methods to determine whether a collection
  // should be iterated as an array or as an object.
  // Related: http://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength
  // Avoids a very nasty iOS 8 JIT bug on ARM-64. #2094
  var MAX_ARRAY_INDEX = Math.pow(2, 53) - 1;
  var getLength = shallowProperty('length');
  var isArrayLike = function(collection) {
    var length = getLength(collection);
    return typeof length == 'number' && length >= 0 && length <= MAX_ARRAY_INDEX;
  };

  // Collection Functions
  // --------------------

  // The cornerstone, an `each` implementation, aka `forEach`.
  // Handles raw objects in addition to array-likes. Treats all
  // sparse array-likes as if they were dense.
  _.each = _.forEach = function(obj, iteratee, context) {
    iteratee = optimizeCb(iteratee, context);
    var i, length;
    if (isArrayLike(obj)) {
      for (i = 0, length = obj.length; i < length; i++) {
        iteratee(obj[i], i, obj);
      }
    } else {
      var keys = _.keys(obj);
      for (i = 0, length = keys.length; i < length; i++) {
        iteratee(obj[keys[i]], keys[i], obj);
      }
    }
    return obj;
  };

  // Return the results of applying the iteratee to each element.
  _.map = _.collect = function(obj, iteratee, context) {
    iteratee = cb(iteratee, context);
    var keys = !isArrayLike(obj) && _.keys(obj),
        length = (keys || obj).length,
        results = Array(length);
    for (var index = 0; index < length; index++) {
      var currentKey = keys ? keys[index] : index;
      results[index] = iteratee(obj[currentKey], currentKey, obj);
    }
    return results;
  };

  // Create a reducing function iterating left or right.
  var createReduce = function(dir) {
    // Wrap code that reassigns argument variables in a separate function than
    // the one that accesses `arguments.length` to avoid a perf hit. (#1991)
    var reducer = function(obj, iteratee, memo, initial) {
      var keys = !isArrayLike(obj) && _.keys(obj),
          length = (keys || obj).length,
          index = dir > 0 ? 0 : length - 1;
      if (!initial) {
        memo = obj[keys ? keys[index] : index];
        index += dir;
      }
      for (; index >= 0 && index < length; index += dir) {
        var currentKey = keys ? keys[index] : index;
        memo = iteratee(memo, obj[currentKey], currentKey, obj);
      }
      return memo;
    };

    return function(obj, iteratee, memo, context) {
      var initial = arguments.length >= 3;
      return reducer(obj, optimizeCb(iteratee, context, 4), memo, initial);
    };
  };

  // **Reduce** builds up a single result from a list of values, aka `inject`,
  // or `foldl`.
  _.reduce = _.foldl = _.inject = createReduce(1);

  // The right-associative version of reduce, also known as `foldr`.
  _.reduceRight = _.foldr = createReduce(-1);

  // Return the first value which passes a truth test. Aliased as `detect`.
  _.find = _.detect = function(obj, predicate, context) {
    var keyFinder = isArrayLike(obj) ? _.findIndex : _.findKey;
    var key = keyFinder(obj, predicate, context);
    if (key !== void 0 && key !== -1) return obj[key];
  };

  // Return all the elements that pass a truth test.
  // Aliased as `select`.
  _.filter = _.select = function(obj, predicate, context) {
    var results = [];
    predicate = cb(predicate, context);
    _.each(obj, function(value, index, list) {
      if (predicate(value, index, list)) results.push(value);
    });
    return results;
  };

  // Return all the elements for which a truth test fails.
  _.reject = function(obj, predicate, context) {
    return _.filter(obj, _.negate(cb(predicate)), context);
  };

  // Determine whether all of the elements match a truth test.
  // Aliased as `all`.
  _.every = _.all = function(obj, predicate, context) {
    predicate = cb(predicate, context);
    var keys = !isArrayLike(obj) && _.keys(obj),
        length = (keys || obj).length;
    for (var index = 0; index < length; index++) {
      var currentKey = keys ? keys[index] : index;
      if (!predicate(obj[currentKey], currentKey, obj)) return false;
    }
    return true;
  };

  // Determine if at least one element in the object matches a truth test.
  // Aliased as `any`.
  _.some = _.any = function(obj, predicate, context) {
    predicate = cb(predicate, context);
    var keys = !isArrayLike(obj) && _.keys(obj),
        length = (keys || obj).length;
    for (var index = 0; index < length; index++) {
      var currentKey = keys ? keys[index] : index;
      if (predicate(obj[currentKey], currentKey, obj)) return true;
    }
    return false;
  };

  // Determine if the array or object contains a given item (using `===`).
  // Aliased as `includes` and `include`.
  _.contains = _.includes = _.include = function(obj, item, fromIndex, guard) {
    if (!isArrayLike(obj)) obj = _.values(obj);
    if (typeof fromIndex != 'number' || guard) fromIndex = 0;
    return _.indexOf(obj, item, fromIndex) >= 0;
  };

  // Invoke a method (with arguments) on every item in a collection.
  _.invoke = restArguments(function(obj, path, args) {
    var contextPath, func;
    if (_.isFunction(path)) {
      func = path;
    } else if (_.isArray(path)) {
      contextPath = path.slice(0, -1);
      path = path[path.length - 1];
    }
    return _.map(obj, function(context) {
      var method = func;
      if (!method) {
        if (contextPath && contextPath.length) {
          context = deepGet(context, contextPath);
        }
        if (context == null) return void 0;
        method = context[path];
      }
      return method == null ? method : method.apply(context, args);
    });
  });

  // Convenience version of a common use case of `map`: fetching a property.
  _.pluck = function(obj, key) {
    return _.map(obj, _.property(key));
  };

  // Convenience version of a common use case of `filter`: selecting only objects
  // containing specific `key:value` pairs.
  _.where = function(obj, attrs) {
    return _.filter(obj, _.matcher(attrs));
  };

  // Convenience version of a common use case of `find`: getting the first object
  // containing specific `key:value` pairs.
  _.findWhere = function(obj, attrs) {
    return _.find(obj, _.matcher(attrs));
  };

  // Return the maximum element (or element-based computation).
  _.max = function(obj, iteratee, context) {
    var result = -Infinity, lastComputed = -Infinity,
        value, computed;
    if (iteratee == null || typeof iteratee == 'number' && typeof obj[0] != 'object' && obj != null) {
      obj = isArrayLike(obj) ? obj : _.values(obj);
      for (var i = 0, length = obj.length; i < length; i++) {
        value = obj[i];
        if (value != null && value > result) {
          result = value;
        }
      }
    } else {
      iteratee = cb(iteratee, context);
      _.each(obj, function(v, index, list) {
        computed = iteratee(v, index, list);
        if (computed > lastComputed || computed === -Infinity && result === -Infinity) {
          result = v;
          lastComputed = computed;
        }
      });
    }
    return result;
  };

  // Return the minimum element (or element-based computation).
  _.min = function(obj, iteratee, context) {
    var result = Infinity, lastComputed = Infinity,
        value, computed;
    if (iteratee == null || typeof iteratee == 'number' && typeof obj[0] != 'object' && obj != null) {
      obj = isArrayLike(obj) ? obj : _.values(obj);
      for (var i = 0, length = obj.length; i < length; i++) {
        value = obj[i];
        if (value != null && value < result) {
          result = value;
        }
      }
    } else {
      iteratee = cb(iteratee, context);
      _.each(obj, function(v, index, list) {
        computed = iteratee(v, index, list);
        if (computed < lastComputed || computed === Infinity && result === Infinity) {
          result = v;
          lastComputed = computed;
        }
      });
    }
    return result;
  };

  // Shuffle a collection.
  _.shuffle = function(obj) {
    return _.sample(obj, Infinity);
  };

  // Sample **n** random values from a collection using the modern version of the
  // [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher–Yates_shuffle).
  // If **n** is not specified, returns a single random element.
  // The internal `guard` argument allows it to work with `map`.
  _.sample = function(obj, n, guard) {
    if (n == null || guard) {
      if (!isArrayLike(obj)) obj = _.values(obj);
      return obj[_.random(obj.length - 1)];
    }
    var sample = isArrayLike(obj) ? _.clone(obj) : _.values(obj);
    var length = getLength(sample);
    n = Math.max(Math.min(n, length), 0);
    var last = length - 1;
    for (var index = 0; index < n; index++) {
      var rand = _.random(index, last);
      var temp = sample[index];
      sample[index] = sample[rand];
      sample[rand] = temp;
    }
    return sample.slice(0, n);
  };

  // Sort the object's values by a criterion produced by an iteratee.
  _.sortBy = function(obj, iteratee, context) {
    var index = 0;
    iteratee = cb(iteratee, context);
    return _.pluck(_.map(obj, function(value, key, list) {
      return {
        value: value,
        index: index++,
        criteria: iteratee(value, key, list)
      };
    }).sort(function(left, right) {
      var a = left.criteria;
      var b = right.criteria;
      if (a !== b) {
        if (a > b || a === void 0) return 1;
        if (a < b || b === void 0) return -1;
      }
      return left.index - right.index;
    }), 'value');
  };

  // An internal function used for aggregate "group by" operations.
  var group = function(behavior, partition) {
    return function(obj, iteratee, context) {
      var result = partition ? [[], []] : {};
      iteratee = cb(iteratee, context);
      _.each(obj, function(value, index) {
        var key = iteratee(value, index, obj);
        behavior(result, value, key);
      });
      return result;
    };
  };

  // Groups the object's values by a criterion. Pass either a string attribute
  // to group by, or a function that returns the criterion.
  _.groupBy = group(function(result, value, key) {
    if (has(result, key)) result[key].push(value); else result[key] = [value];
  });

  // Indexes the object's values by a criterion, similar to `groupBy`, but for
  // when you know that your index values will be unique.
  _.indexBy = group(function(result, value, key) {
    result[key] = value;
  });

  // Counts instances of an object that group by a certain criterion. Pass
  // either a string attribute to count by, or a function that returns the
  // criterion.
  _.countBy = group(function(result, value, key) {
    if (has(result, key)) result[key]++; else result[key] = 1;
  });

  var reStrSymbol = /[^\ud800-\udfff]|[\ud800-\udbff][\udc00-\udfff]|[\ud800-\udfff]/g;
  // Safely create a real, live array from anything iterable.
  _.toArray = function(obj) {
    if (!obj) return [];
    if (_.isArray(obj)) return slice.call(obj);
    if (_.isString(obj)) {
      // Keep surrogate pair characters together
      return obj.match(reStrSymbol);
    }
    if (isArrayLike(obj)) return _.map(obj, _.identity);
    return _.values(obj);
  };

  // Return the number of elements in an object.
  _.size = function(obj) {
    if (obj == null) return 0;
    return isArrayLike(obj) ? obj.length : _.keys(obj).length;
  };

  // Split a collection into two arrays: one whose elements all satisfy the given
  // predicate, and one whose elements all do not satisfy the predicate.
  _.partition = group(function(result, value, pass) {
    result[pass ? 0 : 1].push(value);
  }, true);

  // Array Functions
  // ---------------

  // Get the first element of an array. Passing **n** will return the first N
  // values in the array. Aliased as `head` and `take`. The **guard** check
  // allows it to work with `_.map`.
  _.first = _.head = _.take = function(array, n, guard) {
    if (array == null || array.length < 1) return n == null ? void 0 : [];
    if (n == null || guard) return array[0];
    return _.initial(array, array.length - n);
  };

  // Returns everything but the last entry of the array. Especially useful on
  // the arguments object. Passing **n** will return all the values in
  // the array, excluding the last N.
  _.initial = function(array, n, guard) {
    return slice.call(array, 0, Math.max(0, array.length - (n == null || guard ? 1 : n)));
  };

  // Get the last element of an array. Passing **n** will return the last N
  // values in the array.
  _.last = function(array, n, guard) {
    if (array == null || array.length < 1) return n == null ? void 0 : [];
    if (n == null || guard) return array[array.length - 1];
    return _.rest(array, Math.max(0, array.length - n));
  };

  // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
  // Especially useful on the arguments object. Passing an **n** will return
  // the rest N values in the array.
  _.rest = _.tail = _.drop = function(array, n, guard) {
    return slice.call(array, n == null || guard ? 1 : n);
  };

  // Trim out all falsy values from an array.
  _.compact = function(array) {
    return _.filter(array, Boolean);
  };

  // Internal implementation of a recursive `flatten` function.
  var flatten = function(input, shallow, strict, output) {
    output = output || [];
    var idx = output.length;
    for (var i = 0, length = getLength(input); i < length; i++) {
      var value = input[i];
      if (isArrayLike(value) && (_.isArray(value) || _.isArguments(value))) {
        // Flatten current level of array or arguments object.
        if (shallow) {
          var j = 0, len = value.length;
          while (j < len) output[idx++] = value[j++];
        } else {
          flatten(value, shallow, strict, output);
          idx = output.length;
        }
      } else if (!strict) {
        output[idx++] = value;
      }
    }
    return output;
  };

  // Flatten out an array, either recursively (by default), or just one level.
  _.flatten = function(array, shallow) {
    return flatten(array, shallow, false);
  };

  // Return a version of the array that does not contain the specified value(s).
  _.without = restArguments(function(array, otherArrays) {
    return _.difference(array, otherArrays);
  });

  // Produce a duplicate-free version of the array. If the array has already
  // been sorted, you have the option of using a faster algorithm.
  // The faster algorithm will not work with an iteratee if the iteratee
  // is not a one-to-one function, so providing an iteratee will disable
  // the faster algorithm.
  // Aliased as `unique`.
  _.uniq = _.unique = function(array, isSorted, iteratee, context) {
    if (!_.isBoolean(isSorted)) {
      context = iteratee;
      iteratee = isSorted;
      isSorted = false;
    }
    if (iteratee != null) iteratee = cb(iteratee, context);
    var result = [];
    var seen = [];
    for (var i = 0, length = getLength(array); i < length; i++) {
      var value = array[i],
          computed = iteratee ? iteratee(value, i, array) : value;
      if (isSorted && !iteratee) {
        if (!i || seen !== computed) result.push(value);
        seen = computed;
      } else if (iteratee) {
        if (!_.contains(seen, computed)) {
          seen.push(computed);
          result.push(value);
        }
      } else if (!_.contains(result, value)) {
        result.push(value);
      }
    }
    return result;
  };

  // Produce an array that contains the union: each distinct element from all of
  // the passed-in arrays.
  _.union = restArguments(function(arrays) {
    return _.uniq(flatten(arrays, true, true));
  });

  // Produce an array that contains every item shared between all the
  // passed-in arrays.
  _.intersection = function(array) {
    var result = [];
    var argsLength = arguments.length;
    for (var i = 0, length = getLength(array); i < length; i++) {
      var item = array[i];
      if (_.contains(result, item)) continue;
      var j;
      for (j = 1; j < argsLength; j++) {
        if (!_.contains(arguments[j], item)) break;
      }
      if (j === argsLength) result.push(item);
    }
    return result;
  };

  // Take the difference between one array and a number of other arrays.
  // Only the elements present in just the first array will remain.
  _.difference = restArguments(function(array, rest) {
    rest = flatten(rest, true, true);
    return _.filter(array, function(value){
      return !_.contains(rest, value);
    });
  });

  // Complement of _.zip. Unzip accepts an array of arrays and groups
  // each array's elements on shared indices.
  _.unzip = function(array) {
    var length = array && _.max(array, getLength).length || 0;
    var result = Array(length);

    for (var index = 0; index < length; index++) {
      result[index] = _.pluck(array, index);
    }
    return result;
  };

  // Zip together multiple lists into a single array -- elements that share
  // an index go together.
  _.zip = restArguments(_.unzip);

  // Converts lists into objects. Pass either a single array of `[key, value]`
  // pairs, or two parallel arrays of the same length -- one of keys, and one of
  // the corresponding values. Passing by pairs is the reverse of _.pairs.
  _.object = function(list, values) {
    var result = {};
    for (var i = 0, length = getLength(list); i < length; i++) {
      if (values) {
        result[list[i]] = values[i];
      } else {
        result[list[i][0]] = list[i][1];
      }
    }
    return result;
  };

  // Generator function to create the findIndex and findLastIndex functions.
  var createPredicateIndexFinder = function(dir) {
    return function(array, predicate, context) {
      predicate = cb(predicate, context);
      var length = getLength(array);
      var index = dir > 0 ? 0 : length - 1;
      for (; index >= 0 && index < length; index += dir) {
        if (predicate(array[index], index, array)) return index;
      }
      return -1;
    };
  };

  // Returns the first index on an array-like that passes a predicate test.
  _.findIndex = createPredicateIndexFinder(1);
  _.findLastIndex = createPredicateIndexFinder(-1);

  // Use a comparator function to figure out the smallest index at which
  // an object should be inserted so as to maintain order. Uses binary search.
  _.sortedIndex = function(array, obj, iteratee, context) {
    iteratee = cb(iteratee, context, 1);
    var value = iteratee(obj);
    var low = 0, high = getLength(array);
    while (low < high) {
      var mid = Math.floor((low + high) / 2);
      if (iteratee(array[mid]) < value) low = mid + 1; else high = mid;
    }
    return low;
  };

  // Generator function to create the indexOf and lastIndexOf functions.
  var createIndexFinder = function(dir, predicateFind, sortedIndex) {
    return function(array, item, idx) {
      var i = 0, length = getLength(array);
      if (typeof idx == 'number') {
        if (dir > 0) {
          i = idx >= 0 ? idx : Math.max(idx + length, i);
        } else {
          length = idx >= 0 ? Math.min(idx + 1, length) : idx + length + 1;
        }
      } else if (sortedIndex && idx && length) {
        idx = sortedIndex(array, item);
        return array[idx] === item ? idx : -1;
      }
      if (item !== item) {
        idx = predicateFind(slice.call(array, i, length), _.isNaN);
        return idx >= 0 ? idx + i : -1;
      }
      for (idx = dir > 0 ? i : length - 1; idx >= 0 && idx < length; idx += dir) {
        if (array[idx] === item) return idx;
      }
      return -1;
    };
  };

  // Return the position of the first occurrence of an item in an array,
  // or -1 if the item is not included in the array.
  // If the array is large and already in sort order, pass `true`
  // for **isSorted** to use binary search.
  _.indexOf = createIndexFinder(1, _.findIndex, _.sortedIndex);
  _.lastIndexOf = createIndexFinder(-1, _.findLastIndex);

  // Generate an integer Array containing an arithmetic progression. A port of
  // the native Python `range()` function. See
  // [the Python documentation](http://docs.python.org/library/functions.html#range).
  _.range = function(start, stop, step) {
    if (stop == null) {
      stop = start || 0;
      start = 0;
    }
    if (!step) {
      step = stop < start ? -1 : 1;
    }

    var length = Math.max(Math.ceil((stop - start) / step), 0);
    var range = Array(length);

    for (var idx = 0; idx < length; idx++, start += step) {
      range[idx] = start;
    }

    return range;
  };

  // Chunk a single array into multiple arrays, each containing `count` or fewer
  // items.
  _.chunk = function(array, count) {
    if (count == null || count < 1) return [];
    var result = [];
    var i = 0, length = array.length;
    while (i < length) {
      result.push(slice.call(array, i, i += count));
    }
    return result;
  };

  // Function (ahem) Functions
  // ------------------

  // Determines whether to execute a function as a constructor
  // or a normal function with the provided arguments.
  var executeBound = function(sourceFunc, boundFunc, context, callingContext, args) {
    if (!(callingContext instanceof boundFunc)) return sourceFunc.apply(context, args);
    var self = baseCreate(sourceFunc.prototype);
    var result = sourceFunc.apply(self, args);
    if (_.isObject(result)) return result;
    return self;
  };

  // Create a function bound to a given object (assigning `this`, and arguments,
  // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if
  // available.
  _.bind = restArguments(function(func, context, args) {
    if (!_.isFunction(func)) throw new TypeError('Bind must be called on a function');
    var bound = restArguments(function(callArgs) {
      return executeBound(func, bound, context, this, args.concat(callArgs));
    });
    return bound;
  });

  // Partially apply a function by creating a version that has had some of its
  // arguments pre-filled, without changing its dynamic `this` context. _ acts
  // as a placeholder by default, allowing any combination of arguments to be
  // pre-filled. Set `_.partial.placeholder` for a custom placeholder argument.
  _.partial = restArguments(function(func, boundArgs) {
    var placeholder = _.partial.placeholder;
    var bound = function() {
      var position = 0, length = boundArgs.length;
      var args = Array(length);
      for (var i = 0; i < length; i++) {
        args[i] = boundArgs[i] === placeholder ? arguments[position++] : boundArgs[i];
      }
      while (position < arguments.length) args.push(arguments[position++]);
      return executeBound(func, bound, this, this, args);
    };
    return bound;
  });

  _.partial.placeholder = _;

  // Bind a number of an object's methods to that object. Remaining arguments
  // are the method names to be bound. Useful for ensuring that all callbacks
  // defined on an object belong to it.
  _.bindAll = restArguments(function(obj, keys) {
    keys = flatten(keys, false, false);
    var index = keys.length;
    if (index < 1) throw new Error('bindAll must be passed function names');
    while (index--) {
      var key = keys[index];
      obj[key] = _.bind(obj[key], obj);
    }
  });

  // Memoize an expensive function by storing its results.
  _.memoize = function(func, hasher) {
    var memoize = function(key) {
      var cache = memoize.cache;
      var address = '' + (hasher ? hasher.apply(this, arguments) : key);
      if (!has(cache, address)) cache[address] = func.apply(this, arguments);
      return cache[address];
    };
    memoize.cache = {};
    return memoize;
  };

  // Delays a function for the given number of milliseconds, and then calls
  // it with the arguments supplied.
  _.delay = restArguments(function(func, wait, args) {
    return setTimeout(function() {
      return func.apply(null, args);
    }, wait);
  });

  // Defers a function, scheduling it to run after the current call stack has
  // cleared.
  _.defer = _.partial(_.delay, _, 1);

  // Returns a function, that, when invoked, will only be triggered at most once
  // during a given window of time. Normally, the throttled function will run
  // as much as it can, without ever going more than once per `wait` duration;
  // but if you'd like to disable the execution on the leading edge, pass
  // `{leading: false}`. To disable execution on the trailing edge, ditto.
  _.throttle = function(func, wait, options) {
    var timeout, context, args, result;
    var previous = 0;
    if (!options) options = {};

    var later = function() {
      previous = options.leading === false ? 0 : _.now();
      timeout = null;
      result = func.apply(context, args);
      if (!timeout) context = args = null;
    };

    var throttled = function() {
      var now = _.now();
      if (!previous && options.leading === false) previous = now;
      var remaining = wait - (now - previous);
      context = this;
      args = arguments;
      if (remaining <= 0 || remaining > wait) {
        if (timeout) {
          clearTimeout(timeout);
          timeout = null;
        }
        previous = now;
        result = func.apply(context, args);
        if (!timeout) context = args = null;
      } else if (!timeout && options.trailing !== false) {
        timeout = setTimeout(later, remaining);
      }
      return result;
    };

    throttled.cancel = function() {
      clearTimeout(timeout);
      previous = 0;
      timeout = context = args = null;
    };

    return throttled;
  };

  // Returns a function, that, as long as it continues to be invoked, will not
  // be triggered. The function will be called after it stops being called for
  // N milliseconds. If `immediate` is passed, trigger the function on the
  // leading edge, instead of the trailing.
  _.debounce = function(func, wait, immediate) {
    var timeout, result;

    var later = function(context, args) {
      timeout = null;
      if (args) result = func.apply(context, args);
    };

    var debounced = restArguments(function(args) {
      if (timeout) clearTimeout(timeout);
      if (immediate) {
        var callNow = !timeout;
        timeout = setTimeout(later, wait);
        if (callNow) result = func.apply(this, args);
      } else {
        timeout = _.delay(later, wait, this, args);
      }

      return result;
    });

    debounced.cancel = function() {
      clearTimeout(timeout);
      timeout = null;
    };

    return debounced;
  };

  // Returns the first function passed as an argument to the second,
  // allowing you to adjust arguments, run code before and after, and
  // conditionally execute the original function.
  _.wrap = function(func, wrapper) {
    return _.partial(wrapper, func);
  };

  // Returns a negated version of the passed-in predicate.
  _.negate = function(predicate) {
    return function() {
      return !predicate.apply(this, arguments);
    };
  };

  // Returns a function that is the composition of a list of functions, each
  // consuming the return value of the function that follows.
  _.compose = function() {
    var args = arguments;
    var start = args.length - 1;
    return function() {
      var i = start;
      var result = args[start].apply(this, arguments);
      while (i--) result = args[i].call(this, result);
      return result;
    };
  };

  // Returns a function that will only be executed on and after the Nth call.
  _.after = function(times, func) {
    return function() {
      if (--times < 1) {
        return func.apply(this, arguments);
      }
    };
  };

  // Returns a function that will only be executed up to (but not including) the Nth call.
  _.before = function(times, func) {
    var memo;
    return function() {
      if (--times > 0) {
        memo = func.apply(this, arguments);
      }
      if (times <= 1) func = null;
      return memo;
    };
  };

  // Returns a function that will be executed at most one time, no matter how
  // often you call it. Useful for lazy initialization.
  _.once = _.partial(_.before, 2);

  _.restArguments = restArguments;

  // Object Functions
  // ----------------

  // Keys in IE < 9 that won't be iterated by `for key in ...` and thus missed.
  var hasEnumBug = !{toString: null}.propertyIsEnumerable('toString');
  var nonEnumerableProps = ['valueOf', 'isPrototypeOf', 'toString',
    'propertyIsEnumerable', 'hasOwnProperty', 'toLocaleString'];

  var collectNonEnumProps = function(obj, keys) {
    var nonEnumIdx = nonEnumerableProps.length;
    var constructor = obj.constructor;
    var proto = _.isFunction(constructor) && constructor.prototype || ObjProto;

    // Constructor is a special case.
    var prop = 'constructor';
    if (has(obj, prop) && !_.contains(keys, prop)) keys.push(prop);

    while (nonEnumIdx--) {
      prop = nonEnumerableProps[nonEnumIdx];
      if (prop in obj && obj[prop] !== proto[prop] && !_.contains(keys, prop)) {
        keys.push(prop);
      }
    }
  };

  // Retrieve the names of an object's own properties.
  // Delegates to **ECMAScript 5**'s native `Object.keys`.
  _.keys = function(obj) {
    if (!_.isObject(obj)) return [];
    if (nativeKeys) return nativeKeys(obj);
    var keys = [];
    for (var key in obj) if (has(obj, key)) keys.push(key);
    // Ahem, IE < 9.
    if (hasEnumBug) collectNonEnumProps(obj, keys);
    return keys;
  };

  // Retrieve all the property names of an object.
  _.allKeys = function(obj) {
    if (!_.isObject(obj)) return [];
    var keys = [];
    for (var key in obj) keys.push(key);
    // Ahem, IE < 9.
    if (hasEnumBug) collectNonEnumProps(obj, keys);
    return keys;
  };

  // Retrieve the values of an object's properties.
  _.values = function(obj) {
    var keys = _.keys(obj);
    var length = keys.length;
    var values = Array(length);
    for (var i = 0; i < length; i++) {
      values[i] = obj[keys[i]];
    }
    return values;
  };

  // Returns the results of applying the iteratee to each element of the object.
  // In contrast to _.map it returns an object.
  _.mapObject = function(obj, iteratee, context) {
    iteratee = cb(iteratee, context);
    var keys = _.keys(obj),
        length = keys.length,
        results = {};
    for (var index = 0; index < length; index++) {
      var currentKey = keys[index];
      results[currentKey] = iteratee(obj[currentKey], currentKey, obj);
    }
    return results;
  };

  // Convert an object into a list of `[key, value]` pairs.
  // The opposite of _.object.
  _.pairs = function(obj) {
    var keys = _.keys(obj);
    var length = keys.length;
    var pairs = Array(length);
    for (var i = 0; i < length; i++) {
      pairs[i] = [keys[i], obj[keys[i]]];
    }
    return pairs;
  };

  // Invert the keys and values of an object. The values must be serializable.
  _.invert = function(obj) {
    var result = {};
    var keys = _.keys(obj);
    for (var i = 0, length = keys.length; i < length; i++) {
      result[obj[keys[i]]] = keys[i];
    }
    return result;
  };

  // Return a sorted list of the function names available on the object.
  // Aliased as `methods`.
  _.functions = _.methods = function(obj) {
    var names = [];
    for (var key in obj) {
      if (_.isFunction(obj[key])) names.push(key);
    }
    return names.sort();
  };

  // An internal function for creating assigner functions.
  var createAssigner = function(keysFunc, defaults) {
    return function(obj) {
      var length = arguments.length;
      if (defaults) obj = Object(obj);
      if (length < 2 || obj == null) return obj;
      for (var index = 1; index < length; index++) {
        var source = arguments[index],
            keys = keysFunc(source),
            l = keys.length;
        for (var i = 0; i < l; i++) {
          var key = keys[i];
          if (!defaults || obj[key] === void 0) obj[key] = source[key];
        }
      }
      return obj;
    };
  };

  // Extend a given object with all the properties in passed-in object(s).
  _.extend = createAssigner(_.allKeys);

  // Assigns a given object with all the own properties in the passed-in object(s).
  // (https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/assign)
  _.extendOwn = _.assign = createAssigner(_.keys);

  // Returns the first key on an object that passes a predicate test.
  _.findKey = function(obj, predicate, context) {
    predicate = cb(predicate, context);
    var keys = _.keys(obj), key;
    for (var i = 0, length = keys.length; i < length; i++) {
      key = keys[i];
      if (predicate(obj[key], key, obj)) return key;
    }
  };

  // Internal pick helper function to determine if `obj` has key `key`.
  var keyInObj = function(value, key, obj) {
    return key in obj;
  };

  // Return a copy of the object only containing the whitelisted properties.
  _.pick = restArguments(function(obj, keys) {
    var result = {}, iteratee = keys[0];
    if (obj == null) return result;
    if (_.isFunction(iteratee)) {
      if (keys.length > 1) iteratee = optimizeCb(iteratee, keys[1]);
      keys = _.allKeys(obj);
    } else {
      iteratee = keyInObj;
      keys = flatten(keys, false, false);
      obj = Object(obj);
    }
    for (var i = 0, length = keys.length; i < length; i++) {
      var key = keys[i];
      var value = obj[key];
      if (iteratee(value, key, obj)) result[key] = value;
    }
    return result;
  });

  // Return a copy of the object without the blacklisted properties.
  _.omit = restArguments(function(obj, keys) {
    var iteratee = keys[0], context;
    if (_.isFunction(iteratee)) {
      iteratee = _.negate(iteratee);
      if (keys.length > 1) context = keys[1];
    } else {
      keys = _.map(flatten(keys, false, false), String);
      iteratee = function(value, key) {
        return !_.contains(keys, key);
      };
    }
    return _.pick(obj, iteratee, context);
  });

  // Fill in a given object with default properties.
  _.defaults = createAssigner(_.allKeys, true);

  // Creates an object that inherits from the given prototype object.
  // If additional properties are provided then they will be added to the
  // created object.
  _.create = function(prototype, props) {
    var result = baseCreate(prototype);
    if (props) _.extendOwn(result, props);
    return result;
  };

  // Create a (shallow-cloned) duplicate of an object.
  _.clone = function(obj) {
    if (!_.isObject(obj)) return obj;
    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
  };

  // Invokes interceptor with the obj, and then returns obj.
  // The primary purpose of this method is to "tap into" a method chain, in
  // order to perform operations on intermediate results within the chain.
  _.tap = function(obj, interceptor) {
    interceptor(obj);
    return obj;
  };

  // Returns whether an object has a given set of `key:value` pairs.
  _.isMatch = function(object, attrs) {
    var keys = _.keys(attrs), length = keys.length;
    if (object == null) return !length;
    var obj = Object(object);
    for (var i = 0; i < length; i++) {
      var key = keys[i];
      if (attrs[key] !== obj[key] || !(key in obj)) return false;
    }
    return true;
  };


  // Internal recursive comparison function for `isEqual`.
  var eq, deepEq;
  eq = function(a, b, aStack, bStack) {
    // Identical objects are equal. `0 === -0`, but they aren't identical.
    // See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal).
    if (a === b) return a !== 0 || 1 / a === 1 / b;
    // `null` or `undefined` only equal to itself (strict comparison).
    if (a == null || b == null) return false;
    // `NaN`s are equivalent, but non-reflexive.
    if (a !== a) return b !== b;
    // Exhaust primitive checks
    var type = typeof a;
    if (type !== 'function' && type !== 'object' && typeof b != 'object') return false;
    return deepEq(a, b, aStack, bStack);
  };

  // Internal recursive comparison function for `isEqual`.
  deepEq = function(a, b, aStack, bStack) {
    // Unwrap any wrapped objects.
    if (a instanceof _) a = a._wrapped;
    if (b instanceof _) b = b._wrapped;
    // Compare `[[Class]]` names.
    var className = toString.call(a);
    if (className !== toString.call(b)) return false;
    switch (className) {
      // Strings, numbers, regular expressions, dates, and booleans are compared by value.
      case '[object RegExp]':
      // RegExps are coerced to strings for comparison (Note: '' + /a/i === '/a/i')
      case '[object String]':
        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
        // equivalent to `new String("5")`.
        return '' + a === '' + b;
      case '[object Number]':
        // `NaN`s are equivalent, but non-reflexive.
        // Object(NaN) is equivalent to NaN.
        if (+a !== +a) return +b !== +b;
        // An `egal` comparison is performed for other numeric values.
        return +a === 0 ? 1 / +a === 1 / b : +a === +b;
      case '[object Date]':
      case '[object Boolean]':
        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
        // millisecond representations. Note that invalid dates with millisecond representations
        // of `NaN` are not equivalent.
        return +a === +b;
      case '[object Symbol]':
        return SymbolProto.valueOf.call(a) === SymbolProto.valueOf.call(b);
    }

    var areArrays = className === '[object Array]';
    if (!areArrays) {
      if (typeof a != 'object' || typeof b != 'object') return false;

      // Objects with different constructors are not equivalent, but `Object`s or `Array`s
      // from different frames are.
      var aCtor = a.constructor, bCtor = b.constructor;
      if (aCtor !== bCtor && !(_.isFunction(aCtor) && aCtor instanceof aCtor &&
                               _.isFunction(bCtor) && bCtor instanceof bCtor)
                          && ('constructor' in a && 'constructor' in b)) {
        return false;
      }
    }
    // Assume equality for cyclic structures. The algorithm for detecting cyclic
    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.

    // Initializing stack of traversed objects.
    // It's done here since we only need them for objects and arrays comparison.
    aStack = aStack || [];
    bStack = bStack || [];
    var length = aStack.length;
    while (length--) {
      // Linear search. Performance is inversely proportional to the number of
      // unique nested structures.
      if (aStack[length] === a) return bStack[length] === b;
    }

    // Add the first object to the stack of traversed objects.
    aStack.push(a);
    bStack.push(b);

    // Recursively compare objects and arrays.
    if (areArrays) {
      // Compare array lengths to determine if a deep comparison is necessary.
      length = a.length;
      if (length !== b.length) return false;
      // Deep compare the contents, ignoring non-numeric properties.
      while (length--) {
        if (!eq(a[length], b[length], aStack, bStack)) return false;
      }
    } else {
      // Deep compare objects.
      var keys = _.keys(a), key;
      length = keys.length;
      // Ensure that both objects contain the same number of properties before comparing deep equality.
      if (_.keys(b).length !== length) return false;
      while (length--) {
        // Deep compare each member
        key = keys[length];
        if (!(has(b, key) && eq(a[key], b[key], aStack, bStack))) return false;
      }
    }
    // Remove the first object from the stack of traversed objects.
    aStack.pop();
    bStack.pop();
    return true;
  };

  // Perform a deep comparison to check if two objects are equal.
  _.isEqual = function(a, b) {
    return eq(a, b);
  };

  // Is a given array, string, or object empty?
  // An "empty" object has no enumerable own-properties.
  _.isEmpty = function(obj) {
    if (obj == null) return true;
    if (isArrayLike(obj) && (_.isArray(obj) || _.isString(obj) || _.isArguments(obj))) return obj.length === 0;
    return _.keys(obj).length === 0;
  };

  // Is a given value a DOM element?
  _.isElement = function(obj) {
    return !!(obj && obj.nodeType === 1);
  };

  // Is a given value an array?
  // Delegates to ECMA5's native Array.isArray
  _.isArray = nativeIsArray || function(obj) {
    return toString.call(obj) === '[object Array]';
  };

  // Is a given variable an object?
  _.isObject = function(obj) {
    var type = typeof obj;
    return type === 'function' || type === 'object' && !!obj;
  };

  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp, isError, isMap, isWeakMap, isSet, isWeakSet.
  _.each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp', 'Error', 'Symbol', 'Map', 'WeakMap', 'Set', 'WeakSet'], function(name) {
    _['is' + name] = function(obj) {
      return toString.call(obj) === '[object ' + name + ']';
    };
  });

  // Define a fallback version of the method in browsers (ahem, IE < 9), where
  // there isn't any inspectable "Arguments" type.
  if (!_.isArguments(arguments)) {
    _.isArguments = function(obj) {
      return has(obj, 'callee');
    };
  }

  // Optimize `isFunction` if appropriate. Work around some typeof bugs in old v8,
  // IE 11 (#1621), Safari 8 (#1929), and PhantomJS (#2236).
  var nodelist = root.document && root.document.childNodes;
  if (typeof /./ != 'function' && typeof Int8Array != 'object' && typeof nodelist != 'function') {
    _.isFunction = function(obj) {
      return typeof obj == 'function' || false;
    };
  }

  // Is a given object a finite number?
  _.isFinite = function(obj) {
    return !_.isSymbol(obj) && isFinite(obj) && !isNaN(parseFloat(obj));
  };

  // Is the given value `NaN`?
  _.isNaN = function(obj) {
    return _.isNumber(obj) && isNaN(obj);
  };

  // Is a given value a boolean?
  _.isBoolean = function(obj) {
    return obj === true || obj === false || toString.call(obj) === '[object Boolean]';
  };

  // Is a given value equal to null?
  _.isNull = function(obj) {
    return obj === null;
  };

  // Is a given variable undefined?
  _.isUndefined = function(obj) {
    return obj === void 0;
  };

  // Shortcut function for checking if an object has a given property directly
  // on itself (in other words, not on a prototype).
  _.has = function(obj, path) {
    if (!_.isArray(path)) {
      return has(obj, path);
    }
    var length = path.length;
    for (var i = 0; i < length; i++) {
      var key = path[i];
      if (obj == null || !hasOwnProperty.call(obj, key)) {
        return false;
      }
      obj = obj[key];
    }
    return !!length;
  };

  // Utility Functions
  // -----------------

  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
  // previous owner. Returns a reference to the Underscore object.
  _.noConflict = function() {
    root._ = previousUnderscore;
    return this;
  };

  // Keep the identity function around for default iteratees.
  _.identity = function(value) {
    return value;
  };

  // Predicate-generating functions. Often useful outside of Underscore.
  _.constant = function(value) {
    return function() {
      return value;
    };
  };

  _.noop = function(){};

  // Creates a function that, when passed an object, will traverse that object’s
  // properties down the given `path`, specified as an array of keys or indexes.
  _.property = function(path) {
    if (!_.isArray(path)) {
      return shallowProperty(path);
    }
    return function(obj) {
      return deepGet(obj, path);
    };
  };

  // Generates a function for a given object that returns a given property.
  _.propertyOf = function(obj) {
    if (obj == null) {
      return function(){};
    }
    return function(path) {
      return !_.isArray(path) ? obj[path] : deepGet(obj, path);
    };
  };

  // Returns a predicate for checking whether an object has a given set of
  // `key:value` pairs.
  _.matcher = _.matches = function(attrs) {
    attrs = _.extendOwn({}, attrs);
    return function(obj) {
      return _.isMatch(obj, attrs);
    };
  };

  // Run a function **n** times.
  _.times = function(n, iteratee, context) {
    var accum = Array(Math.max(0, n));
    iteratee = optimizeCb(iteratee, context, 1);
    for (var i = 0; i < n; i++) accum[i] = iteratee(i);
    return accum;
  };

  // Return a random integer between min and max (inclusive).
  _.random = function(min, max) {
    if (max == null) {
      max = min;
      min = 0;
    }
    return min + Math.floor(Math.random() * (max - min + 1));
  };

  // A (possibly faster) way to get the current timestamp as an integer.
  _.now = Date.now || function() {
    return new Date().getTime();
  };

  // List of HTML entities for escaping.
  var escapeMap = {
    '&': '&amp;',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&quot;',
    "'": '&#x27;',
    '`': '&#x60;'
  };
  var unescapeMap = _.invert(escapeMap);

  // Functions for escaping and unescaping strings to/from HTML interpolation.
  var createEscaper = function(map) {
    var escaper = function(match) {
      return map[match];
    };
    // Regexes for identifying a key that needs to be escaped.
    var source = '(?:' + _.keys(map).join('|') + ')';
    var testRegexp = RegExp(source);
    var replaceRegexp = RegExp(source, 'g');
    return function(string) {
      string = string == null ? '' : '' + string;
      return testRegexp.test(string) ? string.replace(replaceRegexp, escaper) : string;
    };
  };
  _.escape = createEscaper(escapeMap);
  _.unescape = createEscaper(unescapeMap);

  // Traverses the children of `obj` along `path`. If a child is a function, it
  // is invoked with its parent as context. Returns the value of the final
  // child, or `fallback` if any child is undefined.
  _.result = function(obj, path, fallback) {
    if (!_.isArray(path)) path = [path];
    var length = path.length;
    if (!length) {
      return _.isFunction(fallback) ? fallback.call(obj) : fallback;
    }
    for (var i = 0; i < length; i++) {
      var prop = obj == null ? void 0 : obj[path[i]];
      if (prop === void 0) {
        prop = fallback;
        i = length; // Ensure we don't continue iterating.
      }
      obj = _.isFunction(prop) ? prop.call(obj) : prop;
    }
    return obj;
  };

  // Generate a unique integer id (unique within the entire client session).
  // Useful for temporary DOM ids.
  var idCounter = 0;
  _.uniqueId = function(prefix) {
    var id = ++idCounter + '';
    return prefix ? prefix + id : id;
  };

  // By default, Underscore uses ERB-style template delimiters, change the
  // following template settings to use alternative delimiters.
  _.templateSettings = {
    evaluate: /<%([\s\S]+?)%>/g,
    interpolate: /<%=([\s\S]+?)%>/g,
    escape: /<%-([\s\S]+?)%>/g
  };

  // When customizing `templateSettings`, if you don't want to define an
  // interpolation, evaluation or escaping regex, we need one that is
  // guaranteed not to match.
  var noMatch = /(.)^/;

  // Certain characters need to be escaped so that they can be put into a
  // string literal.
  var escapes = {
    "'": "'",
    '\\': '\\',
    '\r': 'r',
    '\n': 'n',
    '\u2028': 'u2028',
    '\u2029': 'u2029'
  };

  var escapeRegExp = /\\|'|\r|\n|\u2028|\u2029/g;

  var escapeChar = function(match) {
    return '\\' + escapes[match];
  };

  // JavaScript micro-templating, similar to John Resig's implementation.
  // Underscore templating handles arbitrary delimiters, preserves whitespace,
  // and correctly escapes quotes within interpolated code.
  // NB: `oldSettings` only exists for backwards compatibility.
  _.template = function(text, settings, oldSettings) {
    if (!settings && oldSettings) settings = oldSettings;
    settings = _.defaults({}, settings, _.templateSettings);

    // Combine delimiters into one regular expression via alternation.
    var matcher = RegExp([
      (settings.escape || noMatch).source,
      (settings.interpolate || noMatch).source,
      (settings.evaluate || noMatch).source
    ].join('|') + '|$', 'g');

    // Compile the template source, escaping string literals appropriately.
    var index = 0;
    var source = "__p+='";
    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
      source += text.slice(index, offset).replace(escapeRegExp, escapeChar);
      index = offset + match.length;

      if (escape) {
        source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
      } else if (interpolate) {
        source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
      } else if (evaluate) {
        source += "';\n" + evaluate + "\n__p+='";
      }

      // Adobe VMs need the match returned to produce the correct offset.
      return match;
    });
    source += "';\n";

    // If a variable is not specified, place data values in local scope.
    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';

    source = "var __t,__p='',__j=Array.prototype.join," +
      "print=function(){__p+=__j.call(arguments,'');};\n" +
      source + 'return __p;\n';

    var render;
    try {
      render = new Function(settings.variable || 'obj', '_', source);
    } catch (e) {
      e.source = source;
      throw e;
    }

    var template = function(data) {
      return render.call(this, data, _);
    };

    // Provide the compiled source as a convenience for precompilation.
    var argument = settings.variable || 'obj';
    template.source = 'function(' + argument + '){\n' + source + '}';

    return template;
  };

  // Add a "chain" function. Start chaining a wrapped Underscore object.
  _.chain = function(obj) {
    var instance = _(obj);
    instance._chain = true;
    return instance;
  };

  // OOP
  // ---------------
  // If Underscore is called as a function, it returns a wrapped object that
  // can be used OO-style. This wrapper holds altered versions of all the
  // underscore functions. Wrapped objects may be chained.

  // Helper function to continue chaining intermediate results.
  var chainResult = function(instance, obj) {
    return instance._chain ? _(obj).chain() : obj;
  };

  // Add your own custom functions to the Underscore object.
  _.mixin = function(obj) {
    _.each(_.functions(obj), function(name) {
      var func = _[name] = obj[name];
      _.prototype[name] = function() {
        var args = [this._wrapped];
        push.apply(args, arguments);
        return chainResult(this, func.apply(_, args));
      };
    });
    return _;
  };

  // Add all of the Underscore functions to the wrapper object.
  _.mixin(_);

  // Add all mutator Array functions to the wrapper.
  _.each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
    var method = ArrayProto[name];
    _.prototype[name] = function() {
      var obj = this._wrapped;
      method.apply(obj, arguments);
      if ((name === 'shift' || name === 'splice') && obj.length === 0) delete obj[0];
      return chainResult(this, obj);
    };
  });

  // Add all accessor Array functions to the wrapper.
  _.each(['concat', 'join', 'slice'], function(name) {
    var method = ArrayProto[name];
    _.prototype[name] = function() {
      return chainResult(this, method.apply(this._wrapped, arguments));
    };
  });

  // Extracts the result from a wrapped and chained object.
  _.prototype.value = function() {
    return this._wrapped;
  };

  // Provide unwrapping proxy for some methods used in engine operations
  // such as arithmetic and JSON stringification.
  _.prototype.valueOf = _.prototype.toJSON = _.prototype.value;

  _.prototype.toString = function() {
    return String(this._wrapped);
  };

  // AMD registration happens at the end for compatibility with AMD loaders
  // that may not enforce next-turn semantics on modules. Even though general
  // practice for AMD registration is to be anonymous, underscore registers
  // as a named module because, like jQuery, it is a base library that is
  // popular enough to be bundled in a third party lib, but not be part of
  // an AMD load request. Those cases could generate an error when an
  // anonymous define() is called outside of a loader request.
  if (true) {
    !(__WEBPACK_AMD_DEFINE_ARRAY__ = [], __WEBPACK_AMD_DEFINE_RESULT__ = (function() {
      return _;
    }).apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
  }
}());

/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(5), __webpack_require__(8)(module)))

/***/ }),

/***/ 20:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
    value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _i18next = __webpack_require__(21);

var _i18next2 = _interopRequireDefault(_i18next);

var _i18nextXhrBackend = __webpack_require__(34);

var _i18nextXhrBackend2 = _interopRequireDefault(_i18nextXhrBackend);

var _jquery = __webpack_require__(0);

var _jquery2 = _interopRequireDefault(_jquery);

var _rx = __webpack_require__(7);

var Rx = _interopRequireWildcard(_rx);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var instance = null;

var LocaleService = function () {
    function LocaleService(options) {
        _classCallCheck(this, LocaleService);

        if (!options) {
            options = {};
        }

        // can be instanciated only once
        if (!instance) {
            instance = this;
        }

        if (options.locale === undefined) {
            options.locale = (0, _jquery2.default)('html').attr('lang') || 'fr';
        }
        this.locale = options.locale;
        this.isCached = false;
        this.cachedTranslations = {};
        this.configService = options.configService;
        this.path = this.configService.get('translations');
        return instance;
    }

    _createClass(LocaleService, [{
        key: 't',
        value: function t(key) {
            if (this.isCached && this.translate !== undefined) {
                return this.translate(key);
            } else {
                throw new Error('locale not loaded');
            }
        }
    }, {
        key: 'getLocale',
        value: function getLocale() {
            return this.locale;
        }
    }, {
        key: 'getTranslations',
        value: function getTranslations() {
            return this.cachedTranslations;
        }
    }, {
        key: 'fetchTranslations',
        value: function fetchTranslations(data) {
            var _this = this;

            data = data || {};
            var i18nPromise = _jquery2.default.Deferred();
            _i18next2.default.use(_i18nextXhrBackend2.default).init({
                lng: this.locale,
                backend: {
                    loadPath: this.path

                }
            }, function (err, t) {
                _this.isCached = true;
                _this.translate = t;
                _this.cachedTranslations = _i18next2.default.getResourceBundle(_this.locale);
                i18nPromise.resolve(instance);
                if (data.callback !== undefined) {
                    data.callback();
                }
                //resolve(this.i18n);
            });
            // });
            this.i18n = i18nPromise.promise();
            this.stream = Rx.Observable.fromPromise(this.i18n);
            return this.i18n;
        }
    }]);

    return LocaleService;
}();

exports.default = LocaleService;

/***/ }),

/***/ 21:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
Object.defineProperty(__webpack_exports__, "__esModule", { value: true });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "changeLanguage", function() { return changeLanguage; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "cloneInstance", function() { return cloneInstance; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "createInstance", function() { return createInstance; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "dir", function() { return dir; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "exists", function() { return exists; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "getFixedT", function() { return getFixedT; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "init", function() { return init; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "loadLanguages", function() { return loadLanguages; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "loadNamespaces", function() { return loadNamespaces; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "loadResources", function() { return loadResources; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "off", function() { return off; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "on", function() { return on; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "setDefaultNamespace", function() { return setDefaultNamespace; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "t", function() { return t; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "use", function() { return use; });
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__i18next__ = __webpack_require__(25);


/* harmony default export */ __webpack_exports__["default"] = (__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);

var changeLanguage = __WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */].changeLanguage.bind(__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);
var cloneInstance = __WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */].cloneInstance.bind(__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);
var createInstance = __WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */].createInstance.bind(__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);
var dir = __WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */].dir.bind(__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);
var exists = __WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */].exists.bind(__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);
var getFixedT = __WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */].getFixedT.bind(__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);
var init = __WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */].init.bind(__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);
var loadLanguages = __WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */].loadLanguages.bind(__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);
var loadNamespaces = __WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */].loadNamespaces.bind(__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);
var loadResources = __WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */].loadResources.bind(__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);
var off = __WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */].off.bind(__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);
var on = __WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */].on.bind(__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);
var setDefaultNamespace = __WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */].setDefaultNamespace.bind(__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);
var t = __WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */].t.bind(__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);
var use = __WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */].use.bind(__WEBPACK_IMPORTED_MODULE_0__i18next__["a" /* default */]);

/***/ }),

/***/ 22:
/***/ (function(module, exports) {

// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };


/***/ }),

/***/ 25:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__logger__ = __webpack_require__(3);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__EventEmitter__ = __webpack_require__(6);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2__ResourceStore__ = __webpack_require__(26);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3__Translator__ = __webpack_require__(27);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4__LanguageUtils__ = __webpack_require__(28);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_5__PluralResolver__ = __webpack_require__(29);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_6__Interpolator__ = __webpack_require__(30);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_7__BackendConnector__ = __webpack_require__(31);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_8__CacheConnector__ = __webpack_require__(32);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_9__defaults__ = __webpack_require__(33);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_10__postProcessor__ = __webpack_require__(12);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_11__compatibility_v1__ = __webpack_require__(13);
var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

function _defaults(obj, defaults) { var keys = Object.getOwnPropertyNames(defaults); for (var i = 0; i < keys.length; i++) { var key = keys[i]; var value = Object.getOwnPropertyDescriptor(defaults, key); if (value && value.configurable && obj[key] === undefined) { Object.defineProperty(obj, key, value); } } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : _defaults(subClass, superClass); }















function noop() {}

var I18n = function (_EventEmitter) {
  _inherits(I18n, _EventEmitter);

  function I18n() {
    var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
    var callback = arguments[1];

    _classCallCheck(this, I18n);

    var _this = _possibleConstructorReturn(this, _EventEmitter.call(this));

    _this.options = Object(__WEBPACK_IMPORTED_MODULE_9__defaults__["b" /* transformOptions */])(options);
    _this.services = {};
    _this.logger = __WEBPACK_IMPORTED_MODULE_0__logger__["a" /* default */];
    _this.modules = { external: [] };

    if (callback && !_this.isInitialized && !options.isClone) {
      var _ret;

      // https://github.com/i18next/i18next/issues/879
      if (!_this.options.initImmediate) return _ret = _this.init(options, callback), _possibleConstructorReturn(_this, _ret);
      setTimeout(function () {
        _this.init(options, callback);
      }, 0);
    }
    return _this;
  }

  I18n.prototype.init = function init(options, callback) {
    var _this2 = this;

    if (typeof options === 'function') {
      callback = options;
      options = {};
    }
    if (!options) options = {};

    if (options.compatibilityAPI === 'v1') {
      this.options = _extends({}, Object(__WEBPACK_IMPORTED_MODULE_9__defaults__["a" /* get */])(), Object(__WEBPACK_IMPORTED_MODULE_9__defaults__["b" /* transformOptions */])(__WEBPACK_IMPORTED_MODULE_11__compatibility_v1__["b" /* convertAPIOptions */](options)), {});
    } else if (options.compatibilityJSON === 'v1') {
      this.options = _extends({}, Object(__WEBPACK_IMPORTED_MODULE_9__defaults__["a" /* get */])(), Object(__WEBPACK_IMPORTED_MODULE_9__defaults__["b" /* transformOptions */])(__WEBPACK_IMPORTED_MODULE_11__compatibility_v1__["c" /* convertJSONOptions */](options)), {});
    } else {
      this.options = _extends({}, Object(__WEBPACK_IMPORTED_MODULE_9__defaults__["a" /* get */])(), this.options, Object(__WEBPACK_IMPORTED_MODULE_9__defaults__["b" /* transformOptions */])(options));
    }
    this.format = this.options.interpolation.format;
    if (!callback) callback = noop;

    function createClassOnDemand(ClassOrObject) {
      if (!ClassOrObject) return null;
      if (typeof ClassOrObject === 'function') return new ClassOrObject();
      return ClassOrObject;
    }

    // init services
    if (!this.options.isClone) {
      if (this.modules.logger) {
        __WEBPACK_IMPORTED_MODULE_0__logger__["a" /* default */].init(createClassOnDemand(this.modules.logger), this.options);
      } else {
        __WEBPACK_IMPORTED_MODULE_0__logger__["a" /* default */].init(null, this.options);
      }

      var lu = new __WEBPACK_IMPORTED_MODULE_4__LanguageUtils__["a" /* default */](this.options);
      this.store = new __WEBPACK_IMPORTED_MODULE_2__ResourceStore__["a" /* default */](this.options.resources, this.options);

      var s = this.services;
      s.logger = __WEBPACK_IMPORTED_MODULE_0__logger__["a" /* default */];
      s.resourceStore = this.store;
      s.resourceStore.on('added removed', function (lng, ns) {
        s.cacheConnector.save();
      });
      s.languageUtils = lu;
      s.pluralResolver = new __WEBPACK_IMPORTED_MODULE_5__PluralResolver__["a" /* default */](lu, { prepend: this.options.pluralSeparator, compatibilityJSON: this.options.compatibilityJSON, simplifyPluralSuffix: this.options.simplifyPluralSuffix });
      s.interpolator = new __WEBPACK_IMPORTED_MODULE_6__Interpolator__["a" /* default */](this.options);

      s.backendConnector = new __WEBPACK_IMPORTED_MODULE_7__BackendConnector__["a" /* default */](createClassOnDemand(this.modules.backend), s.resourceStore, s, this.options);
      // pipe events from backendConnector
      s.backendConnector.on('*', function (event) {
        for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
          args[_key - 1] = arguments[_key];
        }

        _this2.emit.apply(_this2, [event].concat(args));
      });

      s.backendConnector.on('loaded', function (loaded) {
        s.cacheConnector.save();
      });

      s.cacheConnector = new __WEBPACK_IMPORTED_MODULE_8__CacheConnector__["a" /* default */](createClassOnDemand(this.modules.cache), s.resourceStore, s, this.options);
      // pipe events from backendConnector
      s.cacheConnector.on('*', function (event) {
        for (var _len2 = arguments.length, args = Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
          args[_key2 - 1] = arguments[_key2];
        }

        _this2.emit.apply(_this2, [event].concat(args));
      });

      if (this.modules.languageDetector) {
        s.languageDetector = createClassOnDemand(this.modules.languageDetector);
        s.languageDetector.init(s, this.options.detection, this.options);
      }

      this.translator = new __WEBPACK_IMPORTED_MODULE_3__Translator__["a" /* default */](this.services, this.options);
      // pipe events from translator
      this.translator.on('*', function (event) {
        for (var _len3 = arguments.length, args = Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) {
          args[_key3 - 1] = arguments[_key3];
        }

        _this2.emit.apply(_this2, [event].concat(args));
      });

      this.modules.external.forEach(function (m) {
        if (m.init) m.init(_this2);
      });
    }

    // append api
    var storeApi = ['getResource', 'addResource', 'addResources', 'addResourceBundle', 'removeResourceBundle', 'hasResourceBundle', 'getResourceBundle'];
    storeApi.forEach(function (fcName) {
      _this2[fcName] = function () {
        var _store;

        return (_store = _this2.store)[fcName].apply(_store, arguments);
      };
    });

    // COMPATIBILITY: remove this
    if (this.options.compatibilityAPI === 'v1') __WEBPACK_IMPORTED_MODULE_11__compatibility_v1__["a" /* appendBackwardsAPI */](this);

    var load = function load() {
      _this2.changeLanguage(_this2.options.lng, function (err, t) {
        _this2.isInitialized = true;
        _this2.logger.log('initialized', _this2.options);
        _this2.emit('initialized', _this2.options);

        callback(err, t);
      });
    };

    if (this.options.resources || !this.options.initImmediate) {
      load();
    } else {
      setTimeout(load, 0);
    }

    return this;
  };

  /* eslint consistent-return: 0 */


  I18n.prototype.loadResources = function loadResources() {
    var _this3 = this;

    var callback = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : noop;

    if (!this.options.resources) {
      if (this.language && this.language.toLowerCase() === 'cimode') return callback(); // avoid loading resources for cimode

      var toLoad = [];

      var append = function append(lng) {
        if (!lng) return;
        var lngs = _this3.services.languageUtils.toResolveHierarchy(lng);
        lngs.forEach(function (l) {
          if (toLoad.indexOf(l) < 0) toLoad.push(l);
        });
      };

      if (!this.language) {
        // at least load fallbacks in this case
        var fallbacks = this.services.languageUtils.getFallbackCodes(this.options.fallbackLng);
        fallbacks.forEach(function (l) {
          return append(l);
        });
      } else {
        append(this.language);
      }

      if (this.options.preload) {
        this.options.preload.forEach(function (l) {
          return append(l);
        });
      }

      this.services.cacheConnector.load(toLoad, this.options.ns, function () {
        _this3.services.backendConnector.load(toLoad, _this3.options.ns, callback);
      });
    } else {
      callback(null);
    }
  };

  I18n.prototype.reloadResources = function reloadResources(lngs, ns) {
    if (!lngs) lngs = this.languages;
    if (!ns) ns = this.options.ns;
    this.services.backendConnector.reload(lngs, ns);
  };

  I18n.prototype.use = function use(module) {
    if (module.type === 'backend') {
      this.modules.backend = module;
    }

    if (module.type === 'cache') {
      this.modules.cache = module;
    }

    if (module.type === 'logger' || module.log && module.warn && module.error) {
      this.modules.logger = module;
    }

    if (module.type === 'languageDetector') {
      this.modules.languageDetector = module;
    }

    if (module.type === 'postProcessor') {
      __WEBPACK_IMPORTED_MODULE_10__postProcessor__["a" /* default */].addPostProcessor(module);
    }

    if (module.type === '3rdParty') {
      this.modules.external.push(module);
    }

    return this;
  };

  I18n.prototype.changeLanguage = function changeLanguage(lng, callback) {
    var _this4 = this;

    var done = function done(err, l) {
      if (l) {
        _this4.emit('languageChanged', l);
        _this4.logger.log('languageChanged', l);
      }

      if (callback) callback(err, function () {
        return _this4.t.apply(_this4, arguments);
      });
    };

    var setLng = function setLng(l) {
      if (l) {
        _this4.language = l;
        _this4.languages = _this4.services.languageUtils.toResolveHierarchy(l);

        _this4.translator.changeLanguage(l);

        if (_this4.services.languageDetector) _this4.services.languageDetector.cacheUserLanguage(l);
      }

      _this4.loadResources(function (err) {
        done(err, l);
      });
    };

    if (!lng && this.services.languageDetector && !this.services.languageDetector.async) {
      setLng(this.services.languageDetector.detect());
    } else if (!lng && this.services.languageDetector && this.services.languageDetector.async) {
      this.services.languageDetector.detect(setLng);
    } else {
      setLng(lng);
    }
  };

  I18n.prototype.getFixedT = function getFixedT(lng, ns) {
    var _this5 = this;

    var fixedT = function fixedT(key) {
      var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

      var options = _extends({}, opts);
      options.lng = options.lng || fixedT.lng;
      options.lngs = options.lngs || fixedT.lngs;
      options.ns = options.ns || fixedT.ns;
      return _this5.t(key, options);
    };
    if (typeof lng === 'string') {
      fixedT.lng = lng;
    } else {
      fixedT.lngs = lng;
    }
    fixedT.ns = ns;
    return fixedT;
  };

  I18n.prototype.t = function t() {
    var _translator;

    return this.translator && (_translator = this.translator).translate.apply(_translator, arguments);
  };

  I18n.prototype.exists = function exists() {
    var _translator2;

    return this.translator && (_translator2 = this.translator).exists.apply(_translator2, arguments);
  };

  I18n.prototype.setDefaultNamespace = function setDefaultNamespace(ns) {
    this.options.defaultNS = ns;
  };

  I18n.prototype.loadNamespaces = function loadNamespaces(ns, callback) {
    var _this6 = this;

    if (!this.options.ns) return callback && callback();
    if (typeof ns === 'string') ns = [ns];

    ns.forEach(function (n) {
      if (_this6.options.ns.indexOf(n) < 0) _this6.options.ns.push(n);
    });

    this.loadResources(callback);
  };

  I18n.prototype.loadLanguages = function loadLanguages(lngs, callback) {
    if (typeof lngs === 'string') lngs = [lngs];
    var preloaded = this.options.preload || [];

    var newLngs = lngs.filter(function (lng) {
      return preloaded.indexOf(lng) < 0;
    });
    // Exit early if all given languages are already preloaded
    if (!newLngs.length) return callback();

    this.options.preload = preloaded.concat(newLngs);
    this.loadResources(callback);
  };

  I18n.prototype.dir = function dir(lng) {
    if (!lng) lng = this.languages && this.languages.length > 0 ? this.languages[0] : this.language;
    if (!lng) return 'rtl';

    var rtlLngs = ['ar', 'shu', 'sqr', 'ssh', 'xaa', 'yhd', 'yud', 'aao', 'abh', 'abv', 'acm', 'acq', 'acw', 'acx', 'acy', 'adf', 'ads', 'aeb', 'aec', 'afb', 'ajp', 'apc', 'apd', 'arb', 'arq', 'ars', 'ary', 'arz', 'auz', 'avl', 'ayh', 'ayl', 'ayn', 'ayp', 'bbz', 'pga', 'he', 'iw', 'ps', 'pbt', 'pbu', 'pst', 'prp', 'prd', 'ur', 'ydd', 'yds', 'yih', 'ji', 'yi', 'hbo', 'men', 'xmn', 'fa', 'jpr', 'peo', 'pes', 'prs', 'dv', 'sam'];

    return rtlLngs.indexOf(this.services.languageUtils.getLanguagePartFromCode(lng)) >= 0 ? 'rtl' : 'ltr';
  };

  /* eslint class-methods-use-this: 0 */


  I18n.prototype.createInstance = function createInstance() {
    var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
    var callback = arguments[1];

    return new I18n(options, callback);
  };

  I18n.prototype.cloneInstance = function cloneInstance() {
    var _this7 = this;

    var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
    var callback = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : noop;

    var mergedOptions = _extends({}, this.options, options, { isClone: true });
    var clone = new I18n(mergedOptions, callback);
    var membersToCopy = ['store', 'services', 'language'];
    membersToCopy.forEach(function (m) {
      clone[m] = _this7[m];
    });
    clone.translator = new __WEBPACK_IMPORTED_MODULE_3__Translator__["a" /* default */](clone.services, clone.options);
    clone.translator.on('*', function (event) {
      for (var _len4 = arguments.length, args = Array(_len4 > 1 ? _len4 - 1 : 0), _key4 = 1; _key4 < _len4; _key4++) {
        args[_key4 - 1] = arguments[_key4];
      }

      clone.emit.apply(clone, [event].concat(args));
    });
    clone.init(mergedOptions, callback);

    return clone;
  };

  return I18n;
}(__WEBPACK_IMPORTED_MODULE_1__EventEmitter__["a" /* default */]);

/* harmony default export */ __webpack_exports__["a"] = (new I18n());

/***/ }),

/***/ 258:
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/* WEBPACK VAR INJECTION */(function($) {

var _bootstrap = __webpack_require__(259);

var _bootstrap2 = _interopRequireDefault(_bootstrap);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var lightboxMobileApplication = {
    bootstrap: _bootstrap2.default
};

if (typeof window !== 'undefined') {
    window.lightboxMobileApplication = lightboxMobileApplication;
}

/*resize of PDF */
$(window).on("load resize ", function (e) {
    if ($('.pdf-iframe').length > 0) {
        var pdfHeight = $('.pdf-iframe').width() / 0.707;
        $('.pdf-iframe').css('height', pdfHeight);
    }
});
/*resize of VIDEO */
$(window).on("load resize ", function (e) {
    if ($('.video-iframe').length > 0) {

        var $sel = $('.center-image');
        var $window = $(window).height();

        // V is for "video" ; K is for "container" ; N is for "new"
        var VH = $('[name=videoHeight]').val();
        var VW = $('[name=videoWidth]').val();
        var KW = $sel.width();
        var KH = $sel.height();

        if ($window <= 375) {
            KH = 150;
        } else {
            if ($window > 375 && $window <= 480) {
                KH = 200;
            }
            if ($window > 480 && $window <= 640) {
                KH = 300;
            }

            if ($window > 640 && $window <= 767) {
                KH = 400;
            }
            if ($window > 767) {
                KH = 550;
            }
        }

        var NW, NH;
        if ((NH = VH / VW * (NW = KW)) > KH) {
            // try to fit exact horizontally, adjust vertically
            // too bad... new height overflows container height
            NW = VW / VH * (NH = KH); // so fit exact vertically, adjust horizontally
        }
        $(".video-iframe", $sel).css('width', NW).css('height', NH);
    }
});

module.exports = lightboxMobileApplication;
/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(0)))

/***/ }),

/***/ 259:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
    value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
// import lightbox from './../components/lightbox/index';
// import mainMenu from './../components/mainMenu';


var _jquery = __webpack_require__(0);

var _jquery2 = _interopRequireDefault(_jquery);

var _configService = __webpack_require__(16);

var _configService2 = _interopRequireDefault(_configService);

var _locale = __webpack_require__(20);

var _locale2 = _interopRequireDefault(_locale);

var _config = __webpack_require__(260);

var _config2 = _interopRequireDefault(_config);

var _emitter = __webpack_require__(15);

var _emitter2 = _interopRequireDefault(_emitter);

var _lodash = __webpack_require__(4);

var _lodash2 = _interopRequireDefault(_lodash);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

__webpack_require__(14);
__webpack_require__(19);

var Bootstrap = function () {
    function Bootstrap(userConfig) {
        var _this = this;

        _classCallCheck(this, Bootstrap);

        var configuration = (0, _lodash2.default)({}, _config2.default, userConfig);

        this.appEvents = new _emitter2.default();
        this.configService = new _configService2.default(configuration);
        this.validatorLoaded = false;
        this.localeService = new _locale2.default({
            configService: this.configService
        });

        this.localeService.fetchTranslations().then(function () {
            _this.onConfigReady();
        });

        return this;
    }

    _createClass(Bootstrap, [{
        key: 'onConfigReady',
        value: function onConfigReady() {
            var _this2 = this;

            this.appServices = {
                configService: this.configService,
                localeService: this.localeService,
                appEvents: this.appEvents
            };

            window.bodySize = {
                x: 0,
                y: 0
            };

            /**
             * add components
             */

            (0, _jquery2.default)(document).ready(function () {
                // let $body = $('body');
                // window.bodySize.y = $body.height();
                // window.bodySize.x = $body.width();
                //
                // this.appLightbox = lightbox(this.appServices);
                // this.appLightbox.initialize({$container: $body});
                //mainMenu(this.appServices).initialize({$container: $body});
                _this2.mobileValidator();
                // this.isReleasable = this.configService.get('releasable');
                //
                // if (this.isReleasable !== null) {
                //     this.appLightbox.setReleasable(this.isReleasable);
                // }
            });
        }
    }, {
        key: 'mobileValidator',
        value: function mobileValidator() {
            var _this4 = this;

            display_basket();

            /*Get status before send validation*/
            function _getReseaseStatus(el) {
                _jquery2.default.ajax({
                    url: '/lightbox/ajax/GET_ELEMENTS/' + (0, _jquery2.default)('#basket_validation_id').val() + '/',
                    dataType: 'json',
                    error: function error(data) {
                        (0, _jquery2.default)('.loader', el).css({
                            visibility: 'hidden'
                        });
                    },
                    timeout: function timeout(data) {
                        (0, _jquery2.default)('.loader', el).css({
                            visibility: 'hidden'
                        });
                    },
                    success: function success(data) {
                        (0, _jquery2.default)('.loader', el).css({
                            visibility: 'hidden'
                        });
                        if (data.datas) {
                            if (data.datas) {
                                if (data.datas.counts.nul == 0) {
                                    _setRelease((0, _jquery2.default)(this));
                                } else {
                                    console.log(data.datas.counts);
                                    (0, _jquery2.default)("#FeedbackRelease .record_accepted").html(data.datas.counts.yes);
                                    (0, _jquery2.default)("#FeedbackRelease .record_refused").html(data.datas.counts.no);
                                    (0, _jquery2.default)("#FeedbackRelease .record_null").html(data.datas.counts.nul);
                                    (0, _jquery2.default)("#FeedbackRelease").modal("show");
                                }
                            }
                        }

                        return;
                    }
                });
            }

            /*Send validation*/
            function _setRelease(el) {
                var _this3 = this;

                _jquery2.default.ajax({
                    type: 'POST',
                    url: '/lightbox/ajax/SET_RELEASE/' + (0, _jquery2.default)('#basket_validation_id').val() + '/',
                    dataType: 'json',
                    error: function error(data) {
                        (0, _jquery2.default)('.loader', el).css({
                            visibility: 'hidden'
                        });
                    },
                    timeout: function timeout(data) {
                        (0, _jquery2.default)('.loader', el).css({
                            visibility: 'hidden'
                        });
                    },
                    success: function success(data) {
                        (0, _jquery2.default)('.loader', el).css({
                            visibility: 'hidden'
                        });
                        if (data.datas) {
                            //      alert(data.datas);
                            window.location.href = "/lightbox";
                        }
                        if (!data.error) {
                            _this3.isReleasable = false;
                            //this.appLightbox.setReleasable(this.isReleasable);
                        }

                        return;
                    }
                });
            };

            (0, _jquery2.default)('body').on('touchstart click', '.confirm_report', function (event) {
                event.preventDefault();
                var $el = (0, _jquery2.default)(event.currentTarget);
                _getReseaseStatus($el);

                return false;
            });
            (0, _jquery2.default)('body').on('touchstart click', '#validate-release', function (event) {
                event.preventDefault();
                (0, _jquery2.default)("#FeedbackRelease").modal("hide");
                _setRelease((0, _jquery2.default)(_this4));
                console.log('validation is done');

                return false;
            });

            (0, _jquery2.default)('body').on('touchstart click', '.agreement_radio', function (event) {
                event.preventDefault();
                //$('.agreement_radio').on('mousedown', (event) => {
                var $el = (0, _jquery2.default)(event.currentTarget);
                var sselcont_id = $el.attr('for').split('_').pop();
                var agreement = (0, _jquery2.default)('#' + $el.attr('for')).val() === 'yes' ? '1' : '-1';

                _jquery2.default.mobile.loading();

                _jquery2.default.ajax({
                    type: 'POST',
                    url: '/lightbox/ajax/SET_ELEMENT_AGREEMENT/' + sselcont_id + '/',
                    dataType: 'json',
                    data: {
                        agreement: agreement
                    },
                    error: function error(datas) {
                        console.log('error');
                        _jquery2.default.mobile.loading();
                    },
                    timeout: function timeout(datas) {
                        console.log('error');
                        _jquery2.default.mobile.loading();
                    },
                    success: function success(datas) {
                        if (!datas.error) {
                            if (agreement === 1) {
                                (0, _jquery2.default)('.valid_choice_' + sselcont_id).removeClass('disagree').addClass('agree');
                            } else {
                                (0, _jquery2.default)('.valid_choice_' + sselcont_id).removeClass('agree').addClass('disagree');
                            }
                            _jquery2.default.mobile.loading();
                            if (datas.error) {
                                alert(datas.datas);
                                return;
                            }
                            _this4.isReleasable = datas.release;
                            //this.appLightbox.setReleasable(this.isReleasable);
                            window.location.reload();
                        } else {
                            console.log(datas.datas);
                        }
                        return;
                    }
                });
                //return false;
            });

            (0, _jquery2.default)('body').on('touchstart click', '.note_area_validate', function (event) {

                var $el = (0, _jquery2.default)(event.currentTarget);
                var sselcont_id = $el.closest('form').find('input[name="sselcont_id"]').val();

                _jquery2.default.mobile.loading();
                _jquery2.default.ajax({
                    type: 'POST',
                    url: '/lightbox/ajax/SET_NOTE/' + sselcont_id + '/',
                    dataType: 'json',
                    data: {
                        note: (0, _jquery2.default)('#note_form_' + sselcont_id).find('textarea').val()
                    },
                    error: function error(datas) {
                        console.log('error');
                        _jquery2.default.mobile.loading();
                    },
                    timeout: function timeout(datas) {
                        console.log('error');
                        _jquery2.default.mobile.loading();
                    },
                    success: function success(datas) {
                        _jquery2.default.mobile.loading();
                        if (datas.error) {
                            console.log(datas.datas);
                            return;
                        }

                        (0, _jquery2.default)('#notes_' + sselcont_id).empty().append(datas.datas);
                        window.location.reload();
                        return;
                    }
                });
                return false;
            });

            function display_basket() {
                var sc_wrapper = (0, _jquery2.default)('#sc_wrapper');

                (0, _jquery2.default)('.basket_element', sc_wrapper).parent().bind('click', function (event) {
                    scid_click(event, this);
                    adjust_visibility(this);
                    return false;
                });

                (0, _jquery2.default)('.agree_button, .disagree_button', sc_wrapper).bind('click', function (event) {

                    var sselcont_id = (0, _jquery2.default)(this).closest('.basket_element').attr('id').split('_').pop();

                    var agreement = (0, _jquery2.default)(this).hasClass('agree_button') ? '1' : '-1';

                    set_agreement(event, (0, _jquery2.default)(this), sselcont_id, agreement);
                    return false;
                }).addClass('clickable');

                var n = (0, _jquery2.default)('.basket_element', sc_wrapper).length;
                (0, _jquery2.default)('#sc_container').width(n * (0, _jquery2.default)('.basket_element_wrapper:first', sc_wrapper).outerWidth() + 1);
            }

            this.validatorLoaded = true;
        }
    }]);

    return Bootstrap;
}();

var bootstrap = function bootstrap(userConfig) {
    return new Bootstrap(userConfig);
};

exports.default = bootstrap;

/***/ }),

/***/ 26:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__EventEmitter__ = __webpack_require__(6);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__utils__ = __webpack_require__(10);
var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

function _defaults(obj, defaults) { var keys = Object.getOwnPropertyNames(defaults); for (var i = 0; i < keys.length; i++) { var key = keys[i]; var value = Object.getOwnPropertyDescriptor(defaults, key); if (value && value.configurable && obj[key] === undefined) { Object.defineProperty(obj, key, value); } } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : _defaults(subClass, superClass); }




var ResourceStore = function (_EventEmitter) {
  _inherits(ResourceStore, _EventEmitter);

  function ResourceStore() {
    var data = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : { ns: ['translation'], defaultNS: 'translation' };

    _classCallCheck(this, ResourceStore);

    var _this = _possibleConstructorReturn(this, _EventEmitter.call(this));

    _this.data = data;
    _this.options = options;
    return _this;
  }

  ResourceStore.prototype.addNamespaces = function addNamespaces(ns) {
    if (this.options.ns.indexOf(ns) < 0) {
      this.options.ns.push(ns);
    }
  };

  ResourceStore.prototype.removeNamespaces = function removeNamespaces(ns) {
    var index = this.options.ns.indexOf(ns);
    if (index > -1) {
      this.options.ns.splice(index, 1);
    }
  };

  ResourceStore.prototype.getResource = function getResource(lng, ns, key) {
    var options = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};

    var keySeparator = options.keySeparator || this.options.keySeparator;
    if (keySeparator === undefined) keySeparator = '.';

    var path = [lng, ns];
    if (key && typeof key !== 'string') path = path.concat(key);
    if (key && typeof key === 'string') path = path.concat(keySeparator ? key.split(keySeparator) : key);

    if (lng.indexOf('.') > -1) {
      path = lng.split('.');
    }

    return __WEBPACK_IMPORTED_MODULE_1__utils__["d" /* getPath */](this.data, path);
  };

  ResourceStore.prototype.addResource = function addResource(lng, ns, key, value) {
    var options = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : { silent: false };

    var keySeparator = this.options.keySeparator;
    if (keySeparator === undefined) keySeparator = '.';

    var path = [lng, ns];
    if (key) path = path.concat(keySeparator ? key.split(keySeparator) : key);

    if (lng.indexOf('.') > -1) {
      path = lng.split('.');
      value = ns;
      ns = path[1];
    }

    this.addNamespaces(ns);

    __WEBPACK_IMPORTED_MODULE_1__utils__["h" /* setPath */](this.data, path, value);

    if (!options.silent) this.emit('added', lng, ns, key, value);
  };

  ResourceStore.prototype.addResources = function addResources(lng, ns, resources) {
    /* eslint no-restricted-syntax: 0 */
    for (var m in resources) {
      if (typeof resources[m] === 'string') this.addResource(lng, ns, m, resources[m], { silent: true });
    }
    this.emit('added', lng, ns, resources);
  };

  ResourceStore.prototype.addResourceBundle = function addResourceBundle(lng, ns, resources, deep, overwrite) {
    var path = [lng, ns];
    if (lng.indexOf('.') > -1) {
      path = lng.split('.');
      deep = resources;
      resources = ns;
      ns = path[1];
    }

    this.addNamespaces(ns);

    var pack = __WEBPACK_IMPORTED_MODULE_1__utils__["d" /* getPath */](this.data, path) || {};

    if (deep) {
      __WEBPACK_IMPORTED_MODULE_1__utils__["b" /* deepExtend */](pack, resources, overwrite);
    } else {
      pack = _extends({}, pack, resources);
    }

    __WEBPACK_IMPORTED_MODULE_1__utils__["h" /* setPath */](this.data, path, pack);

    this.emit('added', lng, ns, resources);
  };

  ResourceStore.prototype.removeResourceBundle = function removeResourceBundle(lng, ns) {
    if (this.hasResourceBundle(lng, ns)) {
      delete this.data[lng][ns];
    }
    this.removeNamespaces(ns);

    this.emit('removed', lng, ns);
  };

  ResourceStore.prototype.hasResourceBundle = function hasResourceBundle(lng, ns) {
    return this.getResource(lng, ns) !== undefined;
  };

  ResourceStore.prototype.getResourceBundle = function getResourceBundle(lng, ns) {
    if (!ns) ns = this.options.defaultNS;

    // COMPATIBILITY: remove extend in v2.1.0
    if (this.options.compatibilityAPI === 'v1') return _extends({}, this.getResource(lng, ns));

    return this.getResource(lng, ns);
  };

  ResourceStore.prototype.toJSON = function toJSON() {
    return this.data;
  };

  return ResourceStore;
}(__WEBPACK_IMPORTED_MODULE_0__EventEmitter__["a" /* default */]);

/* harmony default export */ __webpack_exports__["a"] = (ResourceStore);

/***/ }),

/***/ 260:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
    value: true
});
var defaultConfig = {
    locale: 'fr',
    basePath: '/',
    translations: '/prod/language/'
};

exports.default = defaultConfig;

/***/ }),

/***/ 27:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__logger__ = __webpack_require__(3);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__EventEmitter__ = __webpack_require__(6);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2__postProcessor__ = __webpack_require__(12);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_3__compatibility_v1__ = __webpack_require__(13);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_4__utils__ = __webpack_require__(10);
var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

function _defaults(obj, defaults) { var keys = Object.getOwnPropertyNames(defaults); for (var i = 0; i < keys.length; i++) { var key = keys[i]; var value = Object.getOwnPropertyDescriptor(defaults, key); if (value && value.configurable && obj[key] === undefined) { Object.defineProperty(obj, key, value); } } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : _defaults(subClass, superClass); }







var Translator = function (_EventEmitter) {
  _inherits(Translator, _EventEmitter);

  function Translator(services) {
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

    _classCallCheck(this, Translator);

    var _this = _possibleConstructorReturn(this, _EventEmitter.call(this));

    __WEBPACK_IMPORTED_MODULE_4__utils__["a" /* copy */](['resourceStore', 'languageUtils', 'pluralResolver', 'interpolator', 'backendConnector'], services, _this);

    _this.options = options;
    _this.logger = __WEBPACK_IMPORTED_MODULE_0__logger__["a" /* default */].create('translator');
    return _this;
  }

  Translator.prototype.changeLanguage = function changeLanguage(lng) {
    if (lng) this.language = lng;
  };

  Translator.prototype.exists = function exists(key) {
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : { interpolation: {} };

    if (this.options.compatibilityAPI === 'v1') {
      options = __WEBPACK_IMPORTED_MODULE_3__compatibility_v1__["d" /* convertTOptions */](options);
    }

    return this.resolve(key, options) !== undefined;
  };

  Translator.prototype.extractFromKey = function extractFromKey(key, options) {
    var nsSeparator = options.nsSeparator || this.options.nsSeparator;
    if (nsSeparator === undefined) nsSeparator = ':';
    var keySeparator = options.keySeparator || this.options.keySeparator || '.';

    var namespaces = options.ns || this.options.defaultNS;
    if (nsSeparator && key.indexOf(nsSeparator) > -1) {
      var parts = key.split(nsSeparator);
      if (nsSeparator !== keySeparator || nsSeparator === keySeparator && this.options.ns.indexOf(parts[0]) > -1) namespaces = parts.shift();
      key = parts.join(keySeparator);
    }
    if (typeof namespaces === 'string') namespaces = [namespaces];

    return {
      key: key,
      namespaces: namespaces
    };
  };

  Translator.prototype.translate = function translate(keys) {
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

    if ((typeof options === 'undefined' ? 'undefined' : _typeof(options)) !== 'object') {
      /* eslint prefer-rest-params: 0 */
      options = this.options.overloadTranslationOptionHandler(arguments);
    } else if (this.options.compatibilityAPI === 'v1') {
      options = __WEBPACK_IMPORTED_MODULE_3__compatibility_v1__["d" /* convertTOptions */](options);
    }

    // non valid keys handling
    if (keys === undefined || keys === null || keys === '') return '';
    if (typeof keys === 'number') keys = String(keys);
    if (typeof keys === 'string') keys = [keys];

    // separators
    var keySeparator = options.keySeparator || this.options.keySeparator || '.';

    // get namespace(s)

    var _extractFromKey = this.extractFromKey(keys[keys.length - 1], options),
        key = _extractFromKey.key,
        namespaces = _extractFromKey.namespaces;

    var namespace = namespaces[namespaces.length - 1];

    // return key on CIMode
    var lng = options.lng || this.language;
    var appendNamespaceToCIMode = options.appendNamespaceToCIMode || this.options.appendNamespaceToCIMode;
    if (lng && lng.toLowerCase() === 'cimode') {
      if (appendNamespaceToCIMode) {
        var nsSeparator = options.nsSeparator || this.options.nsSeparator;
        return namespace + nsSeparator + key;
      }

      return key;
    }

    // resolve from store
    var res = this.resolve(keys, options);

    var resType = Object.prototype.toString.apply(res);
    var noObject = ['[object Number]', '[object Function]', '[object RegExp]'];
    var joinArrays = options.joinArrays !== undefined ? options.joinArrays : this.options.joinArrays;

    // object
    if (res && typeof res !== 'string' && noObject.indexOf(resType) < 0 && !(joinArrays && resType === '[object Array]')) {
      if (!options.returnObjects && !this.options.returnObjects) {
        this.logger.warn('accessing an object - but returnObjects options is not enabled!');
        return this.options.returnedObjectHandler ? this.options.returnedObjectHandler(key, res, options) : 'key \'' + key + ' (' + this.language + ')\' returned an object instead of string.';
      }

      // if we got a separator we loop over children - else we just return object as is
      // as having it set to false means no hierarchy so no lookup for nested values
      if (options.keySeparator || this.options.keySeparator) {
        var copy = resType === '[object Array]' ? [] : {}; // apply child translation on a copy

        /* eslint no-restricted-syntax: 0 */
        for (var m in res) {
          if (Object.prototype.hasOwnProperty.call(res, m)) {
            copy[m] = this.translate('' + key + keySeparator + m, _extends({}, options, { joinArrays: false, ns: namespaces }));
          }
        }
        res = copy;
      }
    } else if (joinArrays && resType === '[object Array]') {
      // array special treatment
      res = res.join(joinArrays);
      if (res) res = this.extendTranslation(res, key, options);
    } else {
      // string, empty or null
      var usedDefault = false;
      var usedKey = false;

      // fallback value
      if (!this.isValidLookup(res) && options.defaultValue !== undefined) {
        usedDefault = true;
        res = options.defaultValue;
      }
      if (!this.isValidLookup(res)) {
        usedKey = true;
        res = key;
      }

      // save missing
      if (usedKey || usedDefault) {
        this.logger.log('missingKey', lng, namespace, key, res);

        var lngs = [];
        var fallbackLngs = this.languageUtils.getFallbackCodes(this.options.fallbackLng, options.lng || this.language);
        if (this.options.saveMissingTo === 'fallback' && fallbackLngs && fallbackLngs[0]) {
          for (var i = 0; i < fallbackLngs.length; i++) {
            lngs.push(fallbackLngs[i]);
          }
        } else if (this.options.saveMissingTo === 'all') {
          lngs = this.languageUtils.toResolveHierarchy(options.lng || this.language);
        } else {
          lngs.push(options.lng || this.language);
        }

        if (this.options.saveMissing) {
          if (this.options.missingKeyHandler) {
            this.options.missingKeyHandler(lngs, namespace, key, res);
          } else if (this.backendConnector && this.backendConnector.saveMissing) {
            this.backendConnector.saveMissing(lngs, namespace, key, res);
          }
        }

        this.emit('missingKey', lngs, namespace, key, res);
      }

      // extend
      res = this.extendTranslation(res, key, options);

      // append namespace if still key
      if (usedKey && res === key && this.options.appendNamespaceToMissingKey) res = namespace + ':' + key;

      // parseMissingKeyHandler
      if (usedKey && this.options.parseMissingKeyHandler) res = this.options.parseMissingKeyHandler(res);
    }

    // return
    return res;
  };

  Translator.prototype.extendTranslation = function extendTranslation(res, key, options) {
    var _this2 = this;

    if (options.interpolation) this.interpolator.init(_extends({}, options, { interpolation: _extends({}, this.options.interpolation, options.interpolation) }));

    // interpolate
    var data = options.replace && typeof options.replace !== 'string' ? options.replace : options;
    if (this.options.interpolation.defaultVariables) data = _extends({}, this.options.interpolation.defaultVariables, data);
    res = this.interpolator.interpolate(res, data, options.lng || this.language);

    // nesting
    if (options.nest !== false) res = this.interpolator.nest(res, function () {
      return _this2.translate.apply(_this2, arguments);
    }, options);

    if (options.interpolation) this.interpolator.reset();

    // post process
    var postProcess = options.postProcess || this.options.postProcess;
    var postProcessorNames = typeof postProcess === 'string' ? [postProcess] : postProcess;

    if (res !== undefined && postProcessorNames && postProcessorNames.length && options.applyPostProcessor !== false) {
      res = __WEBPACK_IMPORTED_MODULE_2__postProcessor__["a" /* default */].handle(postProcessorNames, res, key, options, this);
    }

    return res;
  };

  Translator.prototype.resolve = function resolve(keys) {
    var _this3 = this;

    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

    var found = void 0;

    if (typeof keys === 'string') keys = [keys];

    // forEach possible key
    keys.forEach(function (k) {
      if (_this3.isValidLookup(found)) return;

      var extracted = _this3.extractFromKey(k, options);
      var key = extracted.key;
      var namespaces = extracted.namespaces;
      if (_this3.options.fallbackNS) namespaces = namespaces.concat(_this3.options.fallbackNS);

      var needsPluralHandling = options.count !== undefined && typeof options.count !== 'string';
      var needsContextHandling = options.context !== undefined && typeof options.context === 'string' && options.context !== '';

      var codes = options.lngs ? options.lngs : _this3.languageUtils.toResolveHierarchy(options.lng || _this3.language);

      namespaces.forEach(function (ns) {
        if (_this3.isValidLookup(found)) return;

        codes.forEach(function (code) {
          if (_this3.isValidLookup(found)) return;

          var finalKey = key;
          var finalKeys = [finalKey];

          var pluralSuffix = void 0;
          if (needsPluralHandling) pluralSuffix = _this3.pluralResolver.getSuffix(code, options.count);

          // fallback for plural if context not found
          if (needsPluralHandling && needsContextHandling) finalKeys.push(finalKey + pluralSuffix);

          // get key for context if needed
          if (needsContextHandling) finalKeys.push(finalKey += '' + _this3.options.contextSeparator + options.context);

          // get key for plural if needed
          if (needsPluralHandling) finalKeys.push(finalKey += pluralSuffix);

          // iterate over finalKeys starting with most specific pluralkey (-> contextkey only) -> singularkey only
          var possibleKey = void 0;
          /* eslint no-cond-assign: 0 */
          while (possibleKey = finalKeys.pop()) {
            if (!_this3.isValidLookup(found)) {
              found = _this3.getResource(code, ns, possibleKey, options);
            }
          }
        });
      });
    });

    return found;
  };

  Translator.prototype.isValidLookup = function isValidLookup(res) {
    return res !== undefined && !(!this.options.returnNull && res === null) && !(!this.options.returnEmptyString && res === '');
  };

  Translator.prototype.getResource = function getResource(code, ns, key) {
    var options = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};

    return this.resourceStore.getResource(code, ns, key, options);
  };

  return Translator;
}(__WEBPACK_IMPORTED_MODULE_1__EventEmitter__["a" /* default */]);

/* harmony default export */ __webpack_exports__["a"] = (Translator);

/***/ }),

/***/ 28:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__logger__ = __webpack_require__(3);
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }



function capitalize(string) {
  return string.charAt(0).toUpperCase() + string.slice(1);
}

var LanguageUtil = function () {
  function LanguageUtil(options) {
    _classCallCheck(this, LanguageUtil);

    this.options = options;

    this.whitelist = this.options.whitelist || false;
    this.logger = __WEBPACK_IMPORTED_MODULE_0__logger__["a" /* default */].create('languageUtils');
  }

  LanguageUtil.prototype.getScriptPartFromCode = function getScriptPartFromCode(code) {
    if (!code || code.indexOf('-') < 0) return null;

    var p = code.split('-');
    if (p.length === 2) return null;
    p.pop();
    return this.formatLanguageCode(p.join('-'));
  };

  LanguageUtil.prototype.getLanguagePartFromCode = function getLanguagePartFromCode(code) {
    if (!code || code.indexOf('-') < 0) return code;

    var p = code.split('-');
    return this.formatLanguageCode(p[0]);
  };

  LanguageUtil.prototype.formatLanguageCode = function formatLanguageCode(code) {
    // http://www.iana.org/assignments/language-tags/language-tags.xhtml
    if (typeof code === 'string' && code.indexOf('-') > -1) {
      var specialCases = ['hans', 'hant', 'latn', 'cyrl', 'cans', 'mong', 'arab'];
      var p = code.split('-');

      if (this.options.lowerCaseLng) {
        p = p.map(function (part) {
          return part.toLowerCase();
        });
      } else if (p.length === 2) {
        p[0] = p[0].toLowerCase();
        p[1] = p[1].toUpperCase();

        if (specialCases.indexOf(p[1].toLowerCase()) > -1) p[1] = capitalize(p[1].toLowerCase());
      } else if (p.length === 3) {
        p[0] = p[0].toLowerCase();

        // if lenght 2 guess it's a country
        if (p[1].length === 2) p[1] = p[1].toUpperCase();
        if (p[0] !== 'sgn' && p[2].length === 2) p[2] = p[2].toUpperCase();

        if (specialCases.indexOf(p[1].toLowerCase()) > -1) p[1] = capitalize(p[1].toLowerCase());
        if (specialCases.indexOf(p[2].toLowerCase()) > -1) p[2] = capitalize(p[2].toLowerCase());
      }

      return p.join('-');
    }

    return this.options.cleanCode || this.options.lowerCaseLng ? code.toLowerCase() : code;
  };

  LanguageUtil.prototype.isWhitelisted = function isWhitelisted(code) {
    if (this.options.load === 'languageOnly' || this.options.nonExplicitWhitelist) {
      code = this.getLanguagePartFromCode(code);
    }
    return !this.whitelist || !this.whitelist.length || this.whitelist.indexOf(code) > -1;
  };

  LanguageUtil.prototype.getFallbackCodes = function getFallbackCodes(fallbacks, code) {
    if (!fallbacks) return [];
    if (typeof fallbacks === 'string') fallbacks = [fallbacks];
    if (Object.prototype.toString.apply(fallbacks) === '[object Array]') return fallbacks;

    if (!code) return fallbacks.default || [];

    // asume we have an object defining fallbacks
    var found = fallbacks[code];
    if (!found) found = fallbacks[this.getScriptPartFromCode(code)];
    if (!found) found = fallbacks[this.formatLanguageCode(code)];
    if (!found) found = fallbacks.default;

    return found || [];
  };

  LanguageUtil.prototype.toResolveHierarchy = function toResolveHierarchy(code, fallbackCode) {
    var _this = this;

    var fallbackCodes = this.getFallbackCodes(fallbackCode || this.options.fallbackLng || [], code);

    var codes = [];
    var addCode = function addCode(c) {
      if (!c) return;
      if (_this.isWhitelisted(c)) {
        codes.push(c);
      } else {
        _this.logger.warn('rejecting non-whitelisted language code: ' + c);
      }
    };

    if (typeof code === 'string' && code.indexOf('-') > -1) {
      if (this.options.load !== 'languageOnly') addCode(this.formatLanguageCode(code));
      if (this.options.load !== 'languageOnly' && this.options.load !== 'currentOnly') addCode(this.getScriptPartFromCode(code));
      if (this.options.load !== 'currentOnly') addCode(this.getLanguagePartFromCode(code));
    } else if (typeof code === 'string') {
      addCode(this.formatLanguageCode(code));
    }

    fallbackCodes.forEach(function (fc) {
      if (codes.indexOf(fc) < 0) addCode(_this.formatLanguageCode(fc));
    });

    return codes;
  };

  return LanguageUtil;
}();

/* harmony default export */ __webpack_exports__["a"] = (LanguageUtil);

/***/ }),

/***/ 29:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__logger__ = __webpack_require__(3);
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }



// definition http://translate.sourceforge.net/wiki/l10n/pluralforms
/* eslint-disable */
var sets = [{ lngs: ['ach', 'ak', 'am', 'arn', 'br', 'fil', 'gun', 'ln', 'mfe', 'mg', 'mi', 'oc', 'tg', 'ti', 'tr', 'uz', 'wa'], nr: [1, 2], fc: 1 }, { lngs: ['af', 'an', 'ast', 'az', 'bg', 'bn', 'ca', 'da', 'de', 'dev', 'el', 'en', 'eo', 'es', 'es_ar', 'et', 'eu', 'fi', 'fo', 'fur', 'fy', 'gl', 'gu', 'ha', 'he', 'hi', 'hu', 'hy', 'ia', 'it', 'kn', 'ku', 'lb', 'mai', 'ml', 'mn', 'mr', 'nah', 'nap', 'nb', 'ne', 'nl', 'nn', 'no', 'nso', 'pa', 'pap', 'pms', 'ps', 'pt', 'pt_br', 'rm', 'sco', 'se', 'si', 'so', 'son', 'sq', 'sv', 'sw', 'ta', 'te', 'tk', 'ur', 'yo'], nr: [1, 2], fc: 2 }, { lngs: ['ay', 'bo', 'cgg', 'fa', 'id', 'ja', 'jbo', 'ka', 'kk', 'km', 'ko', 'ky', 'lo', 'ms', 'sah', 'su', 'th', 'tt', 'ug', 'vi', 'wo', 'zh'], nr: [1], fc: 3 }, { lngs: ['be', 'bs', 'dz', 'hr', 'ru', 'sr', 'uk'], nr: [1, 2, 5], fc: 4 }, { lngs: ['ar'], nr: [0, 1, 2, 3, 11, 100], fc: 5 }, { lngs: ['cs', 'sk'], nr: [1, 2, 5], fc: 6 }, { lngs: ['csb', 'pl'], nr: [1, 2, 5], fc: 7 }, { lngs: ['cy'], nr: [1, 2, 3, 8], fc: 8 }, { lngs: ['fr'], nr: [1, 2], fc: 9 }, { lngs: ['ga'], nr: [1, 2, 3, 7, 11], fc: 10 }, { lngs: ['gd'], nr: [1, 2, 3, 20], fc: 11 }, { lngs: ['is'], nr: [1, 2], fc: 12 }, { lngs: ['jv'], nr: [0, 1], fc: 13 }, { lngs: ['kw'], nr: [1, 2, 3, 4], fc: 14 }, { lngs: ['lt'], nr: [1, 2, 10], fc: 15 }, { lngs: ['lv'], nr: [1, 2, 0], fc: 16 }, { lngs: ['mk'], nr: [1, 2], fc: 17 }, { lngs: ['mnk'], nr: [0, 1, 2], fc: 18 }, { lngs: ['mt'], nr: [1, 2, 11, 20], fc: 19 }, { lngs: ['or'], nr: [2, 1], fc: 2 }, { lngs: ['ro'], nr: [1, 2, 20], fc: 20 }, { lngs: ['sl'], nr: [5, 1, 2, 3], fc: 21 }];

var _rulesPluralsTypes = {
  1: function _(n) {
    return Number(n > 1);
  },
  2: function _(n) {
    return Number(n != 1);
  },
  3: function _(n) {
    return 0;
  },
  4: function _(n) {
    return Number(n % 10 == 1 && n % 100 != 11 ? 0 : n % 10 >= 2 && n % 10 <= 4 && (n % 100 < 10 || n % 100 >= 20) ? 1 : 2);
  },
  5: function _(n) {
    return Number(n === 0 ? 0 : n == 1 ? 1 : n == 2 ? 2 : n % 100 >= 3 && n % 100 <= 10 ? 3 : n % 100 >= 11 ? 4 : 5);
  },
  6: function _(n) {
    return Number(n == 1 ? 0 : n >= 2 && n <= 4 ? 1 : 2);
  },
  7: function _(n) {
    return Number(n == 1 ? 0 : n % 10 >= 2 && n % 10 <= 4 && (n % 100 < 10 || n % 100 >= 20) ? 1 : 2);
  },
  8: function _(n) {
    return Number(n == 1 ? 0 : n == 2 ? 1 : n != 8 && n != 11 ? 2 : 3);
  },
  9: function _(n) {
    return Number(n >= 2);
  },
  10: function _(n) {
    return Number(n == 1 ? 0 : n == 2 ? 1 : n < 7 ? 2 : n < 11 ? 3 : 4);
  },
  11: function _(n) {
    return Number(n == 1 || n == 11 ? 0 : n == 2 || n == 12 ? 1 : n > 2 && n < 20 ? 2 : 3);
  },
  12: function _(n) {
    return Number(n % 10 != 1 || n % 100 == 11);
  },
  13: function _(n) {
    return Number(n !== 0);
  },
  14: function _(n) {
    return Number(n == 1 ? 0 : n == 2 ? 1 : n == 3 ? 2 : 3);
  },
  15: function _(n) {
    return Number(n % 10 == 1 && n % 100 != 11 ? 0 : n % 10 >= 2 && (n % 100 < 10 || n % 100 >= 20) ? 1 : 2);
  },
  16: function _(n) {
    return Number(n % 10 == 1 && n % 100 != 11 ? 0 : n !== 0 ? 1 : 2);
  },
  17: function _(n) {
    return Number(n == 1 || n % 10 == 1 ? 0 : 1);
  },
  18: function _(n) {
    return Number(n == 0 ? 0 : n == 1 ? 1 : 2);
  },
  19: function _(n) {
    return Number(n == 1 ? 0 : n === 0 || n % 100 > 1 && n % 100 < 11 ? 1 : n % 100 > 10 && n % 100 < 20 ? 2 : 3);
  },
  20: function _(n) {
    return Number(n == 1 ? 0 : n === 0 || n % 100 > 0 && n % 100 < 20 ? 1 : 2);
  },
  21: function _(n) {
    return Number(n % 100 == 1 ? 1 : n % 100 == 2 ? 2 : n % 100 == 3 || n % 100 == 4 ? 3 : 0);
  }
};
/* eslint-enable */

function createRules() {
  var rules = {};
  sets.forEach(function (set) {
    set.lngs.forEach(function (l) {
      rules[l] = {
        numbers: set.nr,
        plurals: _rulesPluralsTypes[set.fc]
      };
    });
  });
  return rules;
}

var PluralResolver = function () {
  function PluralResolver(languageUtils) {
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

    _classCallCheck(this, PluralResolver);

    this.languageUtils = languageUtils;
    this.options = options;

    this.logger = __WEBPACK_IMPORTED_MODULE_0__logger__["a" /* default */].create('pluralResolver');

    this.rules = createRules();
  }

  PluralResolver.prototype.addRule = function addRule(lng, obj) {
    this.rules[lng] = obj;
  };

  PluralResolver.prototype.getRule = function getRule(code) {
    return this.rules[this.languageUtils.getLanguagePartFromCode(code)];
  };

  PluralResolver.prototype.needsPlural = function needsPlural(code) {
    var rule = this.getRule(code);

    return rule && rule.numbers.length > 1;
  };

  PluralResolver.prototype.getSuffix = function getSuffix(code, count) {
    var _this = this;

    var rule = this.getRule(code);

    if (rule) {
      if (rule.numbers.length === 1) return ''; // only singular

      var idx = rule.noAbs ? rule.plurals(count) : rule.plurals(Math.abs(count));
      var suffix = rule.numbers[idx];

      // special treatment for lngs only having singular and plural
      if (this.options.simplifyPluralSuffix && rule.numbers.length === 2 && rule.numbers[0] === 1) {
        if (suffix === 2) {
          suffix = 'plural';
        } else if (suffix === 1) {
          suffix = '';
        }
      }

      var returnSuffix = function returnSuffix() {
        return _this.options.prepend && suffix.toString() ? _this.options.prepend + suffix.toString() : suffix.toString();
      };

      // COMPATIBILITY JSON
      // v1
      if (this.options.compatibilityJSON === 'v1') {
        if (suffix === 1) return '';
        if (typeof suffix === 'number') return '_plural_' + suffix.toString();
        return returnSuffix();
      } else if ( /* v2 */this.options.compatibilityJSON === 'v2' || rule.numbers.length === 2 && rule.numbers[0] === 1) {
        return returnSuffix();
      } else if ( /* v3 - gettext index */rule.numbers.length === 2 && rule.numbers[0] === 1) {
        return returnSuffix();
      }
      return this.options.prepend && idx.toString() ? this.options.prepend + idx.toString() : idx.toString();
    }

    this.logger.warn('no plural rule found for: ' + code);
    return '';
  };

  return PluralResolver;
}();

/* harmony default export */ __webpack_exports__["a"] = (PluralResolver);

/***/ }),

/***/ 3:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }

var consoleLogger = {
  type: 'logger',

  log: function log(args) {
    this.output('log', args);
  },
  warn: function warn(args) {
    this.output('warn', args);
  },
  error: function error(args) {
    this.output('error', args);
  },
  output: function output(type, args) {
    var _console;

    /* eslint no-console: 0 */
    if (console && console[type]) (_console = console)[type].apply(_console, _toConsumableArray(args));
  }
};

var Logger = function () {
  function Logger(concreteLogger) {
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

    _classCallCheck(this, Logger);

    this.init(concreteLogger, options);
  }

  Logger.prototype.init = function init(concreteLogger) {
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

    this.prefix = options.prefix || 'i18next:';
    this.logger = concreteLogger || consoleLogger;
    this.options = options;
    this.debug = options.debug;
  };

  Logger.prototype.setDebug = function setDebug(bool) {
    this.debug = bool;
  };

  Logger.prototype.log = function log() {
    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    return this.forward(args, 'log', '', true);
  };

  Logger.prototype.warn = function warn() {
    for (var _len2 = arguments.length, args = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
      args[_key2] = arguments[_key2];
    }

    return this.forward(args, 'warn', '', true);
  };

  Logger.prototype.error = function error() {
    for (var _len3 = arguments.length, args = Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
      args[_key3] = arguments[_key3];
    }

    return this.forward(args, 'error', '');
  };

  Logger.prototype.deprecate = function deprecate() {
    for (var _len4 = arguments.length, args = Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {
      args[_key4] = arguments[_key4];
    }

    return this.forward(args, 'warn', 'WARNING DEPRECATED: ', true);
  };

  Logger.prototype.forward = function forward(args, lvl, prefix, debugOnly) {
    if (debugOnly && !this.debug) return null;
    if (typeof args[0] === 'string') args[0] = '' + prefix + this.prefix + ' ' + args[0];
    return this.logger[lvl](args);
  };

  Logger.prototype.create = function create(moduleName) {
    return new Logger(this.logger, _extends({ prefix: this.prefix + ':' + moduleName + ':' }, this.options));
  };

  return Logger;
}();

/* harmony default export */ __webpack_exports__["a"] = (new Logger());

/***/ }),

/***/ 30:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__utils__ = __webpack_require__(10);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__logger__ = __webpack_require__(3);
var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }




var Interpolator = function () {
  function Interpolator() {
    var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

    _classCallCheck(this, Interpolator);

    this.logger = __WEBPACK_IMPORTED_MODULE_1__logger__["a" /* default */].create('interpolator');

    this.init(options, true);
  }

  /* eslint no-param-reassign: 0 */


  Interpolator.prototype.init = function init() {
    var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
    var reset = arguments[1];

    if (reset) {
      this.options = options;
      this.format = options.interpolation && options.interpolation.format || function (value) {
        return value;
      };
      this.escape = options.interpolation && options.interpolation.escape || __WEBPACK_IMPORTED_MODULE_0__utils__["c" /* escape */];
    }
    if (!options.interpolation) options.interpolation = { escapeValue: true };

    var iOpts = options.interpolation;

    this.escapeValue = iOpts.escapeValue !== undefined ? iOpts.escapeValue : true;

    this.prefix = iOpts.prefix ? __WEBPACK_IMPORTED_MODULE_0__utils__["g" /* regexEscape */](iOpts.prefix) : iOpts.prefixEscaped || '{{';
    this.suffix = iOpts.suffix ? __WEBPACK_IMPORTED_MODULE_0__utils__["g" /* regexEscape */](iOpts.suffix) : iOpts.suffixEscaped || '}}';

    this.formatSeparator = iOpts.formatSeparator ? iOpts.formatSeparator : iOpts.formatSeparator || ',';

    this.unescapePrefix = iOpts.unescapeSuffix ? '' : iOpts.unescapePrefix || '-';
    this.unescapeSuffix = this.unescapePrefix ? '' : iOpts.unescapeSuffix || '';

    this.nestingPrefix = iOpts.nestingPrefix ? __WEBPACK_IMPORTED_MODULE_0__utils__["g" /* regexEscape */](iOpts.nestingPrefix) : iOpts.nestingPrefixEscaped || __WEBPACK_IMPORTED_MODULE_0__utils__["g" /* regexEscape */]('$t(');
    this.nestingSuffix = iOpts.nestingSuffix ? __WEBPACK_IMPORTED_MODULE_0__utils__["g" /* regexEscape */](iOpts.nestingSuffix) : iOpts.nestingSuffixEscaped || __WEBPACK_IMPORTED_MODULE_0__utils__["g" /* regexEscape */](')');

    // the regexp
    this.resetRegExp();
  };

  Interpolator.prototype.reset = function reset() {
    if (this.options) this.init(this.options);
  };

  Interpolator.prototype.resetRegExp = function resetRegExp() {
    // the regexp
    var regexpStr = this.prefix + '(.+?)' + this.suffix;
    this.regexp = new RegExp(regexpStr, 'g');

    var regexpUnescapeStr = '' + this.prefix + this.unescapePrefix + '(.+?)' + this.unescapeSuffix + this.suffix;
    this.regexpUnescape = new RegExp(regexpUnescapeStr, 'g');

    var nestingRegexpStr = this.nestingPrefix + '(.+?)' + this.nestingSuffix;
    this.nestingRegexp = new RegExp(nestingRegexpStr, 'g');
  };

  Interpolator.prototype.interpolate = function interpolate(str, data, lng) {
    var _this = this;

    var match = void 0;
    var value = void 0;

    function regexSafe(val) {
      return val.replace(/\$/g, '$$$$');
    }

    var handleFormat = function handleFormat(key) {
      if (key.indexOf(_this.formatSeparator) < 0) return __WEBPACK_IMPORTED_MODULE_0__utils__["d" /* getPath */](data, key);

      var p = key.split(_this.formatSeparator);
      var k = p.shift().trim();
      var f = p.join(_this.formatSeparator).trim();

      return _this.format(__WEBPACK_IMPORTED_MODULE_0__utils__["d" /* getPath */](data, k), f, lng);
    };

    this.resetRegExp();

    // unescape if has unescapePrefix/Suffix
    /* eslint no-cond-assign: 0 */
    while (match = this.regexpUnescape.exec(str)) {
      value = handleFormat(match[1].trim());
      str = str.replace(match[0], value);
      this.regexpUnescape.lastIndex = 0;
    }

    // regular escape on demand
    while (match = this.regexp.exec(str)) {
      value = handleFormat(match[1].trim());
      if (typeof value !== 'string') value = __WEBPACK_IMPORTED_MODULE_0__utils__["e" /* makeString */](value);
      if (!value) {
        this.logger.warn('missed to pass in variable ' + match[1] + ' for interpolating ' + str);
        value = '';
      }
      value = this.escapeValue ? regexSafe(this.escape(value)) : regexSafe(value);
      str = str.replace(match[0], value);
      this.regexp.lastIndex = 0;
    }
    return str;
  };

  Interpolator.prototype.nest = function nest(str, fc) {
    var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

    var match = void 0;
    var value = void 0;

    var clonedOptions = _extends({}, options);
    clonedOptions.applyPostProcessor = false; // avoid post processing on nested lookup

    // if value is something like "myKey": "lorem $(anotherKey, { "count": {{aValueInOptions}} })"
    function handleHasOptions(key) {
      if (key.indexOf(',') < 0) return key;

      var p = key.split(',');
      key = p.shift();
      var optionsString = p.join(',');
      optionsString = this.interpolate(optionsString, clonedOptions);
      optionsString = optionsString.replace(/'/g, '"');

      try {
        clonedOptions = JSON.parse(optionsString);
      } catch (e) {
        this.logger.error('failed parsing options string in nesting for key ' + key, e);
      }

      return key;
    }

    // regular escape on demand
    while (match = this.nestingRegexp.exec(str)) {
      value = fc(handleHasOptions.call(this, match[1].trim()), clonedOptions);

      // is only the nesting key (key1 = '$(key2)') return the value without stringify
      if (value && match[0] === str && typeof value !== 'string') return value;

      // no string to include or empty
      if (typeof value !== 'string') value = __WEBPACK_IMPORTED_MODULE_0__utils__["e" /* makeString */](value);
      if (!value) {
        this.logger.warn('missed to resolve ' + match[1] + ' for nesting ' + str);
        value = '';
      }
      // Nested keys should not be escaped by default #854
      // value = this.escapeValue ? regexSafe(utils.escape(value)) : regexSafe(value);
      str = str.replace(match[0], value);
      this.regexp.lastIndex = 0;
    }
    return str;
  };

  return Interpolator;
}();

/* harmony default export */ __webpack_exports__["a"] = (Interpolator);

/***/ }),

/***/ 31:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__utils__ = __webpack_require__(10);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__logger__ = __webpack_require__(3);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2__EventEmitter__ = __webpack_require__(6);
var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

function _defaults(obj, defaults) { var keys = Object.getOwnPropertyNames(defaults); for (var i = 0; i < keys.length; i++) { var key = keys[i]; var value = Object.getOwnPropertyDescriptor(defaults, key); if (value && value.configurable && obj[key] === undefined) { Object.defineProperty(obj, key, value); } } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : _defaults(subClass, superClass); }





function remove(arr, what) {
  var found = arr.indexOf(what);

  while (found !== -1) {
    arr.splice(found, 1);
    found = arr.indexOf(what);
  }
}

var Connector = function (_EventEmitter) {
  _inherits(Connector, _EventEmitter);

  function Connector(backend, store, services) {
    var options = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};

    _classCallCheck(this, Connector);

    var _this = _possibleConstructorReturn(this, _EventEmitter.call(this));

    _this.backend = backend;
    _this.store = store;
    _this.services = services;
    _this.options = options;
    _this.logger = __WEBPACK_IMPORTED_MODULE_1__logger__["a" /* default */].create('backendConnector');

    _this.state = {};
    _this.queue = [];

    if (_this.backend && _this.backend.init) {
      _this.backend.init(services, options.backend, options);
    }
    return _this;
  }

  Connector.prototype.queueLoad = function queueLoad(languages, namespaces, callback) {
    var _this2 = this;

    // find what needs to be loaded
    var toLoad = [];
    var pending = [];
    var toLoadLanguages = [];
    var toLoadNamespaces = [];

    languages.forEach(function (lng) {
      var hasAllNamespaces = true;

      namespaces.forEach(function (ns) {
        var name = lng + '|' + ns;

        if (_this2.store.hasResourceBundle(lng, ns)) {
          _this2.state[name] = 2; // loaded
        } else if (_this2.state[name] < 0) {
          // nothing to do for err
        } else if (_this2.state[name] === 1) {
          if (pending.indexOf(name) < 0) pending.push(name);
        } else {
          _this2.state[name] = 1; // pending

          hasAllNamespaces = false;

          if (pending.indexOf(name) < 0) pending.push(name);
          if (toLoad.indexOf(name) < 0) toLoad.push(name);
          if (toLoadNamespaces.indexOf(ns) < 0) toLoadNamespaces.push(ns);
        }
      });

      if (!hasAllNamespaces) toLoadLanguages.push(lng);
    });

    if (toLoad.length || pending.length) {
      this.queue.push({
        pending: pending,
        loaded: {},
        errors: [],
        callback: callback
      });
    }

    return {
      toLoad: toLoad,
      pending: pending,
      toLoadLanguages: toLoadLanguages,
      toLoadNamespaces: toLoadNamespaces
    };
  };

  Connector.prototype.loaded = function loaded(name, err, data) {
    var _this3 = this;

    var _name$split = name.split('|'),
        _name$split2 = _slicedToArray(_name$split, 2),
        lng = _name$split2[0],
        ns = _name$split2[1];

    if (err) this.emit('failedLoading', lng, ns, err);

    if (data) {
      this.store.addResourceBundle(lng, ns, data);
    }

    // set loaded
    this.state[name] = err ? -1 : 2;

    // callback if ready
    this.queue.forEach(function (q) {
      __WEBPACK_IMPORTED_MODULE_0__utils__["f" /* pushPath */](q.loaded, [lng], ns);
      remove(q.pending, name);

      if (err) q.errors.push(err);

      if (q.pending.length === 0 && !q.done) {
        _this3.emit('loaded', q.loaded);
        /* eslint no-param-reassign: 0 */
        q.done = true;
        if (q.errors.length) {
          q.callback(q.errors);
        } else {
          q.callback();
        }
      }
    });

    // remove done load requests
    this.queue = this.queue.filter(function (q) {
      return !q.done;
    });
  };

  Connector.prototype.read = function read(lng, ns, fcName) {
    var tried = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 0;

    var _this4 = this;

    var wait = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 250;
    var callback = arguments[5];

    if (!lng.length) return callback(null, {}); // noting to load

    return this.backend[fcName](lng, ns, function (err, data) {
      if (err && data /* = retryFlag */ && tried < 5) {
        setTimeout(function () {
          _this4.read.call(_this4, lng, ns, fcName, tried + 1, wait * 2, callback);
        }, wait);
        return;
      }
      callback(err, data);
    });
  };

  /* eslint consistent-return: 0 */


  Connector.prototype.load = function load(languages, namespaces, callback) {
    var _this5 = this;

    if (!this.backend) {
      this.logger.warn('No backend was added via i18next.use. Will not load resources.');
      return callback && callback();
    }
    var options = _extends({}, this.backend.options, this.options.backend);

    if (typeof languages === 'string') languages = this.services.languageUtils.toResolveHierarchy(languages);
    if (typeof namespaces === 'string') namespaces = [namespaces];

    var toLoad = this.queueLoad(languages, namespaces, callback);
    if (!toLoad.toLoad.length) {
      if (!toLoad.pending.length) callback(); // nothing to load and no pendings...callback now
      return null; // pendings will trigger callback
    }

    // load with multi-load
    if (options.allowMultiLoading && this.backend.readMulti) {
      this.read(toLoad.toLoadLanguages, toLoad.toLoadNamespaces, 'readMulti', null, null, function (err, data) {
        if (err) _this5.logger.warn('loading namespaces ' + toLoad.toLoadNamespaces.join(', ') + ' for languages ' + toLoad.toLoadLanguages.join(', ') + ' via multiloading failed', err);
        if (!err && data) _this5.logger.log('successfully loaded namespaces ' + toLoad.toLoadNamespaces.join(', ') + ' for languages ' + toLoad.toLoadLanguages.join(', ') + ' via multiloading', data);

        toLoad.toLoad.forEach(function (name) {
          var _name$split3 = name.split('|'),
              _name$split4 = _slicedToArray(_name$split3, 2),
              l = _name$split4[0],
              n = _name$split4[1];

          var bundle = __WEBPACK_IMPORTED_MODULE_0__utils__["d" /* getPath */](data, [l, n]);
          if (bundle) {
            _this5.loaded(name, err, bundle);
          } else {
            var error = 'loading namespace ' + n + ' for language ' + l + ' via multiloading failed';
            _this5.loaded(name, error);
            _this5.logger.error(error);
          }
        });
      });
    } else {
      toLoad.toLoad.forEach(function (name) {
        _this5.loadOne(name);
      });
    }
  };

  Connector.prototype.reload = function reload(languages, namespaces) {
    var _this6 = this;

    if (!this.backend) {
      this.logger.warn('No backend was added via i18next.use. Will not load resources.');
    }
    var options = _extends({}, this.backend.options, this.options.backend);

    if (typeof languages === 'string') languages = this.services.languageUtils.toResolveHierarchy(languages);
    if (typeof namespaces === 'string') namespaces = [namespaces];

    // load with multi-load
    if (options.allowMultiLoading && this.backend.readMulti) {
      this.read(languages, namespaces, 'readMulti', null, null, function (err, data) {
        if (err) _this6.logger.warn('reloading namespaces ' + namespaces.join(', ') + ' for languages ' + languages.join(', ') + ' via multiloading failed', err);
        if (!err && data) _this6.logger.log('successfully reloaded namespaces ' + namespaces.join(', ') + ' for languages ' + languages.join(', ') + ' via multiloading', data);

        languages.forEach(function (l) {
          namespaces.forEach(function (n) {
            var bundle = __WEBPACK_IMPORTED_MODULE_0__utils__["d" /* getPath */](data, [l, n]);
            if (bundle) {
              _this6.loaded(l + '|' + n, err, bundle);
            } else {
              var error = 'reloading namespace ' + n + ' for language ' + l + ' via multiloading failed';
              _this6.loaded(l + '|' + n, error);
              _this6.logger.error(error);
            }
          });
        });
      });
    } else {
      languages.forEach(function (l) {
        namespaces.forEach(function (n) {
          _this6.loadOne(l + '|' + n, 're');
        });
      });
    }
  };

  Connector.prototype.loadOne = function loadOne(name) {
    var _this7 = this;

    var prefix = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';

    var _name$split5 = name.split('|'),
        _name$split6 = _slicedToArray(_name$split5, 2),
        lng = _name$split6[0],
        ns = _name$split6[1];

    this.read(lng, ns, 'read', null, null, function (err, data) {
      if (err) _this7.logger.warn(prefix + 'loading namespace ' + ns + ' for language ' + lng + ' failed', err);
      if (!err && data) _this7.logger.log(prefix + 'loaded namespace ' + ns + ' for language ' + lng, data);

      _this7.loaded(name, err, data);
    });
  };

  Connector.prototype.saveMissing = function saveMissing(languages, namespace, key, fallbackValue) {
    if (this.backend && this.backend.create) this.backend.create(languages, namespace, key, fallbackValue);

    // write to store to avoid resending
    if (!languages || !languages[0]) return;
    this.store.addResource(languages[0], namespace, key, fallbackValue);
  };

  return Connector;
}(__WEBPACK_IMPORTED_MODULE_2__EventEmitter__["a" /* default */]);

/* harmony default export */ __webpack_exports__["a"] = (Connector);

/***/ }),

/***/ 32:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__logger__ = __webpack_require__(3);
/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__EventEmitter__ = __webpack_require__(6);
var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

function _defaults(obj, defaults) { var keys = Object.getOwnPropertyNames(defaults); for (var i = 0; i < keys.length; i++) { var key = keys[i]; var value = Object.getOwnPropertyDescriptor(defaults, key); if (value && value.configurable && obj[key] === undefined) { Object.defineProperty(obj, key, value); } } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : _defaults(subClass, superClass); }




var Connector = function (_EventEmitter) {
  _inherits(Connector, _EventEmitter);

  function Connector(cache, store, services) {
    var options = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};

    _classCallCheck(this, Connector);

    var _this = _possibleConstructorReturn(this, _EventEmitter.call(this));

    _this.cache = cache;
    _this.store = store;
    _this.services = services;
    _this.options = options;
    _this.logger = __WEBPACK_IMPORTED_MODULE_0__logger__["a" /* default */].create('cacheConnector');

    if (_this.cache && _this.cache.init) _this.cache.init(services, options.cache, options);
    return _this;
  }

  /* eslint consistent-return: 0 */


  Connector.prototype.load = function load(languages, namespaces, callback) {
    var _this2 = this;

    if (!this.cache) return callback && callback();
    var options = _extends({}, this.cache.options, this.options.cache);

    var loadLngs = typeof languages === 'string' ? this.services.languageUtils.toResolveHierarchy(languages) : languages;

    if (options.enabled) {
      this.cache.load(loadLngs, function (err, data) {
        if (err) _this2.logger.error('loading languages ' + loadLngs.join(', ') + ' from cache failed', err);
        if (data) {
          /* eslint no-restricted-syntax: 0 */
          for (var l in data) {
            if (Object.prototype.hasOwnProperty.call(data, l)) {
              for (var n in data[l]) {
                if (Object.prototype.hasOwnProperty.call(data[l], n)) {
                  if (n !== 'i18nStamp') {
                    var bundle = data[l][n];
                    if (bundle) _this2.store.addResourceBundle(l, n, bundle);
                  }
                }
              }
            }
          }
        }
        if (callback) callback();
      });
    } else if (callback) {
      callback();
    }
  };

  Connector.prototype.save = function save() {
    if (this.cache && this.options.cache && this.options.cache.enabled) this.cache.save(this.store.data);
  };

  return Connector;
}(__WEBPACK_IMPORTED_MODULE_1__EventEmitter__["a" /* default */]);

/* harmony default export */ __webpack_exports__["a"] = (Connector);

/***/ }),

/***/ 33:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "a", function() { return get; });
/* harmony export (immutable) */ __webpack_exports__["b"] = transformOptions;

function get() {
  return {
    debug: false,
    initImmediate: true,

    ns: ['translation'],
    defaultNS: ['translation'],
    fallbackLng: ['dev'],
    fallbackNS: false, // string or array of namespaces

    whitelist: false, // array with whitelisted languages
    nonExplicitWhitelist: false,
    load: 'all', // | currentOnly | languageOnly
    preload: false, // array with preload languages

    simplifyPluralSuffix: true,
    keySeparator: '.',
    nsSeparator: ':',
    pluralSeparator: '_',
    contextSeparator: '_',

    saveMissing: false, // enable to send missing values
    saveMissingTo: 'fallback', // 'current' || 'all'
    missingKeyHandler: false, // function(lng, ns, key, fallbackValue) -> override if prefer on handling

    postProcess: false, // string or array of postProcessor names
    returnNull: true, // allows null value as valid translation
    returnEmptyString: true, // allows empty string value as valid translation
    returnObjects: false,
    joinArrays: false, // or string to join array
    returnedObjectHandler: function returnedObjectHandler() {}, // function(key, value, options) triggered if key returns object but returnObjects is set to false
    parseMissingKeyHandler: false, // function(key) parsed a key that was not found in t() before returning
    appendNamespaceToMissingKey: false,
    appendNamespaceToCIMode: false,
    overloadTranslationOptionHandler: function handle(args) {
      return { defaultValue: args[1] };
    },

    interpolation: {
      escapeValue: true,
      format: function format(value, _format, lng) {
        return value;
      },
      prefix: '{{',
      suffix: '}}',
      formatSeparator: ',',
      // prefixEscaped: '{{',
      // suffixEscaped: '}}',
      // unescapeSuffix: '',
      unescapePrefix: '-',

      nestingPrefix: '$t(',
      nestingSuffix: ')',
      // nestingPrefixEscaped: '$t(',
      // nestingSuffixEscaped: ')',
      defaultVariables: undefined // object that can have values to interpolate on - extends passed in interpolation data
    }
  };
}

/* eslint no-param-reassign: 0 */
function transformOptions(options) {
  // create namespace object if namespace is passed in as string
  if (typeof options.ns === 'string') options.ns = [options.ns];
  if (typeof options.fallbackLng === 'string') options.fallbackLng = [options.fallbackLng];
  if (typeof options.fallbackNS === 'string') options.fallbackNS = [options.fallbackNS];

  // extend whitelist with cimode
  if (options.whitelist && options.whitelist.indexOf('cimode') < 0) options.whitelist.push('cimode');

  return options;
}

/***/ }),

/***/ 34:
/***/ (function(module, exports, __webpack_require__) {

module.exports = __webpack_require__(35).default;


/***/ }),

/***/ 35:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _utils = __webpack_require__(36);

var utils = _interopRequireWildcard(_utils);

var _ajax = __webpack_require__(37);

var _ajax2 = _interopRequireDefault(_ajax);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function getDefaults() {
  return {
    loadPath: '/locales/{{lng}}/{{ns}}.json',
    addPath: '/locales/add/{{lng}}/{{ns}}',
    allowMultiLoading: false,
    parse: JSON.parse,
    crossDomain: false,
    ajax: _ajax2.default
  };
}

var Backend = function () {
  function Backend(services) {
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

    _classCallCheck(this, Backend);

    this.init(services, options);

    this.type = 'backend';
  }

  _createClass(Backend, [{
    key: 'init',
    value: function init(services) {
      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

      this.services = services;
      this.options = utils.defaults(options, this.options || {}, getDefaults());
    }
  }, {
    key: 'readMulti',
    value: function readMulti(languages, namespaces, callback) {
      var loadPath = this.options.loadPath;
      if (typeof this.options.loadPath === 'function') {
        loadPath = this.options.loadPath(languages, namespaces);
      }

      var url = this.services.interpolator.interpolate(loadPath, { lng: languages.join('+'), ns: namespaces.join('+') });

      this.loadUrl(url, callback);
    }
  }, {
    key: 'read',
    value: function read(language, namespace, callback) {
      var loadPath = this.options.loadPath;
      if (typeof this.options.loadPath === 'function') {
        loadPath = this.options.loadPath([language], [namespace]);
      }

      var url = this.services.interpolator.interpolate(loadPath, { lng: language, ns: namespace });

      this.loadUrl(url, callback);
    }
  }, {
    key: 'loadUrl',
    value: function loadUrl(url, callback) {
      var _this = this;

      this.options.ajax(url, this.options, function (data, xhr) {
        if (xhr.status >= 500 && xhr.status < 600) return callback('failed loading ' + url, true /* retry */);
        if (xhr.status >= 400 && xhr.status < 500) return callback('failed loading ' + url, false /* no retry */);

        var ret = void 0,
            err = void 0;
        try {
          ret = _this.options.parse(data, url);
        } catch (e) {
          err = 'failed parsing ' + url + ' to json';
        }
        if (err) return callback(err, false);
        callback(null, ret);
      });
    }
  }, {
    key: 'create',
    value: function create(languages, namespace, key, fallbackValue) {
      var _this2 = this;

      if (typeof languages === 'string') languages = [languages];

      var payload = {};
      payload[key] = fallbackValue || '';

      languages.forEach(function (lng) {
        var url = _this2.services.interpolator.interpolate(_this2.options.addPath, { lng: lng, ns: namespace });

        _this2.options.ajax(url, _this2.options, function (data, xhr) {
          //const statusCode = xhr.status.toString();
          // TODO: if statusCode === 4xx do log
        }, payload);
      });
    }
  }]);

  return Backend;
}();

Backend.type = 'backend';

exports.default = Backend;

/***/ }),

/***/ 36:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.defaults = defaults;
exports.extend = extend;
var arr = [];
var each = arr.forEach;
var slice = arr.slice;

function defaults(obj) {
  each.call(slice.call(arguments, 1), function (source) {
    if (source) {
      for (var prop in source) {
        if (obj[prop] === undefined) obj[prop] = source[prop];
      }
    }
  });
  return obj;
}

function extend(obj) {
  each.call(slice.call(arguments, 1), function (source) {
    if (source) {
      for (var prop in source) {
        obj[prop] = source[prop];
      }
    }
  });
  return obj;
}

/***/ }),

/***/ 37:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

function addQueryString(url, params) {
  if (params && (typeof params === 'undefined' ? 'undefined' : _typeof(params)) === 'object') {
    var queryString = '',
        e = encodeURIComponent;

    // Must encode data
    for (var paramName in params) {
      queryString += '&' + e(paramName) + '=' + e(params[paramName]);
    }

    if (!queryString) {
      return url;
    }

    url = url + (url.indexOf('?') !== -1 ? '&' : '?') + queryString.slice(1);
  }

  return url;
}

// https://gist.github.com/Xeoncross/7663273
function ajax(url, options, callback, data, cache) {

  if (data && (typeof data === 'undefined' ? 'undefined' : _typeof(data)) === 'object') {
    if (!cache) {
      data['_t'] = new Date();
    }
    // URL encoded form data must be in querystring format
    data = addQueryString('', data).slice(1);
  }

  if (options.queryStringParams) {
    url = addQueryString(url, options.queryStringParams);
  }

  try {
    var x;
    if (XMLHttpRequest) {
      x = new XMLHttpRequest();
    } else {
      x = new ActiveXObject('MSXML2.XMLHTTP.3.0');
    }
    x.open(data ? 'POST' : 'GET', url, 1);
    if (!options.crossDomain) {
      x.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
    }
    x.withCredentials = !!options.withCredentials;
    if (data) {
      x.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
    }
    if (x.overrideMimeType) {
      x.overrideMimeType("application/json");
    }
    var h = options.customHeaders;
    if (h) {
      for (var i in h) {
        x.setRequestHeader(i, h[i]);
      }
    }
    x.onreadystatechange = function () {
      x.readyState > 3 && callback && callback(x.responseText, x);
    };
    x.send(data);
  } catch (e) {
    console && console.log(e);
  }
}

exports.default = ajax;

/***/ }),

/***/ 4:
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(global, module) {/**
 * Lodash (Custom Build) <https://lodash.com/>
 * Build: `lodash modularize exports="npm" -o ./`
 * Copyright OpenJS Foundation and other contributors <https://openjsf.org/>
 * Released under MIT license <https://lodash.com/license>
 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
 * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 */

/** Used as the size to enable large array optimizations. */
var LARGE_ARRAY_SIZE = 200;

/** Used to stand-in for `undefined` hash values. */
var HASH_UNDEFINED = '__lodash_hash_undefined__';

/** Used to detect hot functions by number of calls within a span of milliseconds. */
var HOT_COUNT = 800,
    HOT_SPAN = 16;

/** Used as references for various `Number` constants. */
var MAX_SAFE_INTEGER = 9007199254740991;

/** `Object#toString` result references. */
var argsTag = '[object Arguments]',
    arrayTag = '[object Array]',
    asyncTag = '[object AsyncFunction]',
    boolTag = '[object Boolean]',
    dateTag = '[object Date]',
    errorTag = '[object Error]',
    funcTag = '[object Function]',
    genTag = '[object GeneratorFunction]',
    mapTag = '[object Map]',
    numberTag = '[object Number]',
    nullTag = '[object Null]',
    objectTag = '[object Object]',
    proxyTag = '[object Proxy]',
    regexpTag = '[object RegExp]',
    setTag = '[object Set]',
    stringTag = '[object String]',
    undefinedTag = '[object Undefined]',
    weakMapTag = '[object WeakMap]';

var arrayBufferTag = '[object ArrayBuffer]',
    dataViewTag = '[object DataView]',
    float32Tag = '[object Float32Array]',
    float64Tag = '[object Float64Array]',
    int8Tag = '[object Int8Array]',
    int16Tag = '[object Int16Array]',
    int32Tag = '[object Int32Array]',
    uint8Tag = '[object Uint8Array]',
    uint8ClampedTag = '[object Uint8ClampedArray]',
    uint16Tag = '[object Uint16Array]',
    uint32Tag = '[object Uint32Array]';

/**
 * Used to match `RegExp`
 * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
 */
var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;

/** Used to detect host constructors (Safari). */
var reIsHostCtor = /^\[object .+?Constructor\]$/;

/** Used to detect unsigned integer values. */
var reIsUint = /^(?:0|[1-9]\d*)$/;

/** Used to identify `toStringTag` values of typed arrays. */
var typedArrayTags = {};
typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
typedArrayTags[uint32Tag] = true;
typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
typedArrayTags[errorTag] = typedArrayTags[funcTag] =
typedArrayTags[mapTag] = typedArrayTags[numberTag] =
typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
typedArrayTags[setTag] = typedArrayTags[stringTag] =
typedArrayTags[weakMapTag] = false;

/** Detect free variable `global` from Node.js. */
var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;

/** Detect free variable `self`. */
var freeSelf = typeof self == 'object' && self && self.Object === Object && self;

/** Used as a reference to the global object. */
var root = freeGlobal || freeSelf || Function('return this')();

/** Detect free variable `exports`. */
var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;

/** Detect free variable `module`. */
var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;

/** Detect the popular CommonJS extension `module.exports`. */
var moduleExports = freeModule && freeModule.exports === freeExports;

/** Detect free variable `process` from Node.js. */
var freeProcess = moduleExports && freeGlobal.process;

/** Used to access faster Node.js helpers. */
var nodeUtil = (function() {
  try {
    // Use `util.types` for Node.js 10+.
    var types = freeModule && freeModule.require && freeModule.require('util').types;

    if (types) {
      return types;
    }

    // Legacy `process.binding('util')` for Node.js < 10.
    return freeProcess && freeProcess.binding && freeProcess.binding('util');
  } catch (e) {}
}());

/* Node.js helper references. */
var nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;

/**
 * A faster alternative to `Function#apply`, this function invokes `func`
 * with the `this` binding of `thisArg` and the arguments of `args`.
 *
 * @private
 * @param {Function} func The function to invoke.
 * @param {*} thisArg The `this` binding of `func`.
 * @param {Array} args The arguments to invoke `func` with.
 * @returns {*} Returns the result of `func`.
 */
function apply(func, thisArg, args) {
  switch (args.length) {
    case 0: return func.call(thisArg);
    case 1: return func.call(thisArg, args[0]);
    case 2: return func.call(thisArg, args[0], args[1]);
    case 3: return func.call(thisArg, args[0], args[1], args[2]);
  }
  return func.apply(thisArg, args);
}

/**
 * The base implementation of `_.times` without support for iteratee shorthands
 * or max array length checks.
 *
 * @private
 * @param {number} n The number of times to invoke `iteratee`.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array} Returns the array of results.
 */
function baseTimes(n, iteratee) {
  var index = -1,
      result = Array(n);

  while (++index < n) {
    result[index] = iteratee(index);
  }
  return result;
}

/**
 * The base implementation of `_.unary` without support for storing metadata.
 *
 * @private
 * @param {Function} func The function to cap arguments for.
 * @returns {Function} Returns the new capped function.
 */
function baseUnary(func) {
  return function(value) {
    return func(value);
  };
}

/**
 * Gets the value at `key` of `object`.
 *
 * @private
 * @param {Object} [object] The object to query.
 * @param {string} key The key of the property to get.
 * @returns {*} Returns the property value.
 */
function getValue(object, key) {
  return object == null ? undefined : object[key];
}

/**
 * Creates a unary function that invokes `func` with its argument transformed.
 *
 * @private
 * @param {Function} func The function to wrap.
 * @param {Function} transform The argument transform.
 * @returns {Function} Returns the new function.
 */
function overArg(func, transform) {
  return function(arg) {
    return func(transform(arg));
  };
}

/** Used for built-in method references. */
var arrayProto = Array.prototype,
    funcProto = Function.prototype,
    objectProto = Object.prototype;

/** Used to detect overreaching core-js shims. */
var coreJsData = root['__core-js_shared__'];

/** Used to resolve the decompiled source of functions. */
var funcToString = funcProto.toString;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/** Used to detect methods masquerading as native. */
var maskSrcKey = (function() {
  var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
  return uid ? ('Symbol(src)_1.' + uid) : '';
}());

/**
 * Used to resolve the
 * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
 * of values.
 */
var nativeObjectToString = objectProto.toString;

/** Used to infer the `Object` constructor. */
var objectCtorString = funcToString.call(Object);

/** Used to detect if a method is native. */
var reIsNative = RegExp('^' +
  funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
  .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
);

/** Built-in value references. */
var Buffer = moduleExports ? root.Buffer : undefined,
    Symbol = root.Symbol,
    Uint8Array = root.Uint8Array,
    allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,
    getPrototype = overArg(Object.getPrototypeOf, Object),
    objectCreate = Object.create,
    propertyIsEnumerable = objectProto.propertyIsEnumerable,
    splice = arrayProto.splice,
    symToStringTag = Symbol ? Symbol.toStringTag : undefined;

var defineProperty = (function() {
  try {
    var func = getNative(Object, 'defineProperty');
    func({}, '', {});
    return func;
  } catch (e) {}
}());

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,
    nativeMax = Math.max,
    nativeNow = Date.now;

/* Built-in method references that are verified to be native. */
var Map = getNative(root, 'Map'),
    nativeCreate = getNative(Object, 'create');

/**
 * The base implementation of `_.create` without support for assigning
 * properties to the created object.
 *
 * @private
 * @param {Object} proto The object to inherit from.
 * @returns {Object} Returns the new object.
 */
var baseCreate = (function() {
  function object() {}
  return function(proto) {
    if (!isObject(proto)) {
      return {};
    }
    if (objectCreate) {
      return objectCreate(proto);
    }
    object.prototype = proto;
    var result = new object;
    object.prototype = undefined;
    return result;
  };
}());

/**
 * Creates a hash object.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function Hash(entries) {
  var index = -1,
      length = entries == null ? 0 : entries.length;

  this.clear();
  while (++index < length) {
    var entry = entries[index];
    this.set(entry[0], entry[1]);
  }
}

/**
 * Removes all key-value entries from the hash.
 *
 * @private
 * @name clear
 * @memberOf Hash
 */
function hashClear() {
  this.__data__ = nativeCreate ? nativeCreate(null) : {};
  this.size = 0;
}

/**
 * Removes `key` and its value from the hash.
 *
 * @private
 * @name delete
 * @memberOf Hash
 * @param {Object} hash The hash to modify.
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function hashDelete(key) {
  var result = this.has(key) && delete this.__data__[key];
  this.size -= result ? 1 : 0;
  return result;
}

/**
 * Gets the hash value for `key`.
 *
 * @private
 * @name get
 * @memberOf Hash
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function hashGet(key) {
  var data = this.__data__;
  if (nativeCreate) {
    var result = data[key];
    return result === HASH_UNDEFINED ? undefined : result;
  }
  return hasOwnProperty.call(data, key) ? data[key] : undefined;
}

/**
 * Checks if a hash value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf Hash
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function hashHas(key) {
  var data = this.__data__;
  return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);
}

/**
 * Sets the hash `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf Hash
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the hash instance.
 */
function hashSet(key, value) {
  var data = this.__data__;
  this.size += this.has(key) ? 0 : 1;
  data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
  return this;
}

// Add methods to `Hash`.
Hash.prototype.clear = hashClear;
Hash.prototype['delete'] = hashDelete;
Hash.prototype.get = hashGet;
Hash.prototype.has = hashHas;
Hash.prototype.set = hashSet;

/**
 * Creates an list cache object.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function ListCache(entries) {
  var index = -1,
      length = entries == null ? 0 : entries.length;

  this.clear();
  while (++index < length) {
    var entry = entries[index];
    this.set(entry[0], entry[1]);
  }
}

/**
 * Removes all key-value entries from the list cache.
 *
 * @private
 * @name clear
 * @memberOf ListCache
 */
function listCacheClear() {
  this.__data__ = [];
  this.size = 0;
}

/**
 * Removes `key` and its value from the list cache.
 *
 * @private
 * @name delete
 * @memberOf ListCache
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function listCacheDelete(key) {
  var data = this.__data__,
      index = assocIndexOf(data, key);

  if (index < 0) {
    return false;
  }
  var lastIndex = data.length - 1;
  if (index == lastIndex) {
    data.pop();
  } else {
    splice.call(data, index, 1);
  }
  --this.size;
  return true;
}

/**
 * Gets the list cache value for `key`.
 *
 * @private
 * @name get
 * @memberOf ListCache
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function listCacheGet(key) {
  var data = this.__data__,
      index = assocIndexOf(data, key);

  return index < 0 ? undefined : data[index][1];
}

/**
 * Checks if a list cache value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf ListCache
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function listCacheHas(key) {
  return assocIndexOf(this.__data__, key) > -1;
}

/**
 * Sets the list cache `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf ListCache
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the list cache instance.
 */
function listCacheSet(key, value) {
  var data = this.__data__,
      index = assocIndexOf(data, key);

  if (index < 0) {
    ++this.size;
    data.push([key, value]);
  } else {
    data[index][1] = value;
  }
  return this;
}

// Add methods to `ListCache`.
ListCache.prototype.clear = listCacheClear;
ListCache.prototype['delete'] = listCacheDelete;
ListCache.prototype.get = listCacheGet;
ListCache.prototype.has = listCacheHas;
ListCache.prototype.set = listCacheSet;

/**
 * Creates a map cache object to store key-value pairs.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function MapCache(entries) {
  var index = -1,
      length = entries == null ? 0 : entries.length;

  this.clear();
  while (++index < length) {
    var entry = entries[index];
    this.set(entry[0], entry[1]);
  }
}

/**
 * Removes all key-value entries from the map.
 *
 * @private
 * @name clear
 * @memberOf MapCache
 */
function mapCacheClear() {
  this.size = 0;
  this.__data__ = {
    'hash': new Hash,
    'map': new (Map || ListCache),
    'string': new Hash
  };
}

/**
 * Removes `key` and its value from the map.
 *
 * @private
 * @name delete
 * @memberOf MapCache
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function mapCacheDelete(key) {
  var result = getMapData(this, key)['delete'](key);
  this.size -= result ? 1 : 0;
  return result;
}

/**
 * Gets the map value for `key`.
 *
 * @private
 * @name get
 * @memberOf MapCache
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function mapCacheGet(key) {
  return getMapData(this, key).get(key);
}

/**
 * Checks if a map value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf MapCache
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function mapCacheHas(key) {
  return getMapData(this, key).has(key);
}

/**
 * Sets the map `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf MapCache
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the map cache instance.
 */
function mapCacheSet(key, value) {
  var data = getMapData(this, key),
      size = data.size;

  data.set(key, value);
  this.size += data.size == size ? 0 : 1;
  return this;
}

// Add methods to `MapCache`.
MapCache.prototype.clear = mapCacheClear;
MapCache.prototype['delete'] = mapCacheDelete;
MapCache.prototype.get = mapCacheGet;
MapCache.prototype.has = mapCacheHas;
MapCache.prototype.set = mapCacheSet;

/**
 * Creates a stack cache object to store key-value pairs.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function Stack(entries) {
  var data = this.__data__ = new ListCache(entries);
  this.size = data.size;
}

/**
 * Removes all key-value entries from the stack.
 *
 * @private
 * @name clear
 * @memberOf Stack
 */
function stackClear() {
  this.__data__ = new ListCache;
  this.size = 0;
}

/**
 * Removes `key` and its value from the stack.
 *
 * @private
 * @name delete
 * @memberOf Stack
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function stackDelete(key) {
  var data = this.__data__,
      result = data['delete'](key);

  this.size = data.size;
  return result;
}

/**
 * Gets the stack value for `key`.
 *
 * @private
 * @name get
 * @memberOf Stack
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function stackGet(key) {
  return this.__data__.get(key);
}

/**
 * Checks if a stack value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf Stack
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function stackHas(key) {
  return this.__data__.has(key);
}

/**
 * Sets the stack `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf Stack
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the stack cache instance.
 */
function stackSet(key, value) {
  var data = this.__data__;
  if (data instanceof ListCache) {
    var pairs = data.__data__;
    if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
      pairs.push([key, value]);
      this.size = ++data.size;
      return this;
    }
    data = this.__data__ = new MapCache(pairs);
  }
  data.set(key, value);
  this.size = data.size;
  return this;
}

// Add methods to `Stack`.
Stack.prototype.clear = stackClear;
Stack.prototype['delete'] = stackDelete;
Stack.prototype.get = stackGet;
Stack.prototype.has = stackHas;
Stack.prototype.set = stackSet;

/**
 * Creates an array of the enumerable property names of the array-like `value`.
 *
 * @private
 * @param {*} value The value to query.
 * @param {boolean} inherited Specify returning inherited property names.
 * @returns {Array} Returns the array of property names.
 */
function arrayLikeKeys(value, inherited) {
  var isArr = isArray(value),
      isArg = !isArr && isArguments(value),
      isBuff = !isArr && !isArg && isBuffer(value),
      isType = !isArr && !isArg && !isBuff && isTypedArray(value),
      skipIndexes = isArr || isArg || isBuff || isType,
      result = skipIndexes ? baseTimes(value.length, String) : [],
      length = result.length;

  for (var key in value) {
    if ((inherited || hasOwnProperty.call(value, key)) &&
        !(skipIndexes && (
           // Safari 9 has enumerable `arguments.length` in strict mode.
           key == 'length' ||
           // Node.js 0.10 has enumerable non-index properties on buffers.
           (isBuff && (key == 'offset' || key == 'parent')) ||
           // PhantomJS 2 has enumerable non-index properties on typed arrays.
           (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||
           // Skip index properties.
           isIndex(key, length)
        ))) {
      result.push(key);
    }
  }
  return result;
}

/**
 * This function is like `assignValue` except that it doesn't assign
 * `undefined` values.
 *
 * @private
 * @param {Object} object The object to modify.
 * @param {string} key The key of the property to assign.
 * @param {*} value The value to assign.
 */
function assignMergeValue(object, key, value) {
  if ((value !== undefined && !eq(object[key], value)) ||
      (value === undefined && !(key in object))) {
    baseAssignValue(object, key, value);
  }
}

/**
 * Assigns `value` to `key` of `object` if the existing value is not equivalent
 * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * for equality comparisons.
 *
 * @private
 * @param {Object} object The object to modify.
 * @param {string} key The key of the property to assign.
 * @param {*} value The value to assign.
 */
function assignValue(object, key, value) {
  var objValue = object[key];
  if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
      (value === undefined && !(key in object))) {
    baseAssignValue(object, key, value);
  }
}

/**
 * Gets the index at which the `key` is found in `array` of key-value pairs.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {*} key The key to search for.
 * @returns {number} Returns the index of the matched value, else `-1`.
 */
function assocIndexOf(array, key) {
  var length = array.length;
  while (length--) {
    if (eq(array[length][0], key)) {
      return length;
    }
  }
  return -1;
}

/**
 * The base implementation of `assignValue` and `assignMergeValue` without
 * value checks.
 *
 * @private
 * @param {Object} object The object to modify.
 * @param {string} key The key of the property to assign.
 * @param {*} value The value to assign.
 */
function baseAssignValue(object, key, value) {
  if (key == '__proto__' && defineProperty) {
    defineProperty(object, key, {
      'configurable': true,
      'enumerable': true,
      'value': value,
      'writable': true
    });
  } else {
    object[key] = value;
  }
}

/**
 * The base implementation of `baseForOwn` which iterates over `object`
 * properties returned by `keysFunc` and invokes `iteratee` for each property.
 * Iteratee functions may exit iteration early by explicitly returning `false`.
 *
 * @private
 * @param {Object} object The object to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @param {Function} keysFunc The function to get the keys of `object`.
 * @returns {Object} Returns `object`.
 */
var baseFor = createBaseFor();

/**
 * The base implementation of `getTag` without fallbacks for buggy environments.
 *
 * @private
 * @param {*} value The value to query.
 * @returns {string} Returns the `toStringTag`.
 */
function baseGetTag(value) {
  if (value == null) {
    return value === undefined ? undefinedTag : nullTag;
  }
  return (symToStringTag && symToStringTag in Object(value))
    ? getRawTag(value)
    : objectToString(value);
}

/**
 * The base implementation of `_.isArguments`.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an `arguments` object,
 */
function baseIsArguments(value) {
  return isObjectLike(value) && baseGetTag(value) == argsTag;
}

/**
 * The base implementation of `_.isNative` without bad shim checks.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a native function,
 *  else `false`.
 */
function baseIsNative(value) {
  if (!isObject(value) || isMasked(value)) {
    return false;
  }
  var pattern = isFunction(value) ? reIsNative : reIsHostCtor;
  return pattern.test(toSource(value));
}

/**
 * The base implementation of `_.isTypedArray` without Node.js optimizations.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
 */
function baseIsTypedArray(value) {
  return isObjectLike(value) &&
    isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
}

/**
 * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 */
function baseKeysIn(object) {
  if (!isObject(object)) {
    return nativeKeysIn(object);
  }
  var isProto = isPrototype(object),
      result = [];

  for (var key in object) {
    if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
      result.push(key);
    }
  }
  return result;
}

/**
 * The base implementation of `_.merge` without support for multiple sources.
 *
 * @private
 * @param {Object} object The destination object.
 * @param {Object} source The source object.
 * @param {number} srcIndex The index of `source`.
 * @param {Function} [customizer] The function to customize merged values.
 * @param {Object} [stack] Tracks traversed source values and their merged
 *  counterparts.
 */
function baseMerge(object, source, srcIndex, customizer, stack) {
  if (object === source) {
    return;
  }
  baseFor(source, function(srcValue, key) {
    stack || (stack = new Stack);
    if (isObject(srcValue)) {
      baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
    }
    else {
      var newValue = customizer
        ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)
        : undefined;

      if (newValue === undefined) {
        newValue = srcValue;
      }
      assignMergeValue(object, key, newValue);
    }
  }, keysIn);
}

/**
 * A specialized version of `baseMerge` for arrays and objects which performs
 * deep merges and tracks traversed objects enabling objects with circular
 * references to be merged.
 *
 * @private
 * @param {Object} object The destination object.
 * @param {Object} source The source object.
 * @param {string} key The key of the value to merge.
 * @param {number} srcIndex The index of `source`.
 * @param {Function} mergeFunc The function to merge values.
 * @param {Function} [customizer] The function to customize assigned values.
 * @param {Object} [stack] Tracks traversed source values and their merged
 *  counterparts.
 */
function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {
  var objValue = safeGet(object, key),
      srcValue = safeGet(source, key),
      stacked = stack.get(srcValue);

  if (stacked) {
    assignMergeValue(object, key, stacked);
    return;
  }
  var newValue = customizer
    ? customizer(objValue, srcValue, (key + ''), object, source, stack)
    : undefined;

  var isCommon = newValue === undefined;

  if (isCommon) {
    var isArr = isArray(srcValue),
        isBuff = !isArr && isBuffer(srcValue),
        isTyped = !isArr && !isBuff && isTypedArray(srcValue);

    newValue = srcValue;
    if (isArr || isBuff || isTyped) {
      if (isArray(objValue)) {
        newValue = objValue;
      }
      else if (isArrayLikeObject(objValue)) {
        newValue = copyArray(objValue);
      }
      else if (isBuff) {
        isCommon = false;
        newValue = cloneBuffer(srcValue, true);
      }
      else if (isTyped) {
        isCommon = false;
        newValue = cloneTypedArray(srcValue, true);
      }
      else {
        newValue = [];
      }
    }
    else if (isPlainObject(srcValue) || isArguments(srcValue)) {
      newValue = objValue;
      if (isArguments(objValue)) {
        newValue = toPlainObject(objValue);
      }
      else if (!isObject(objValue) || isFunction(objValue)) {
        newValue = initCloneObject(srcValue);
      }
    }
    else {
      isCommon = false;
    }
  }
  if (isCommon) {
    // Recursively merge objects and arrays (susceptible to call stack limits).
    stack.set(srcValue, newValue);
    mergeFunc(newValue, srcValue, srcIndex, customizer, stack);
    stack['delete'](srcValue);
  }
  assignMergeValue(object, key, newValue);
}

/**
 * The base implementation of `_.rest` which doesn't validate or coerce arguments.
 *
 * @private
 * @param {Function} func The function to apply a rest parameter to.
 * @param {number} [start=func.length-1] The start position of the rest parameter.
 * @returns {Function} Returns the new function.
 */
function baseRest(func, start) {
  return setToString(overRest(func, start, identity), func + '');
}

/**
 * The base implementation of `setToString` without support for hot loop shorting.
 *
 * @private
 * @param {Function} func The function to modify.
 * @param {Function} string The `toString` result.
 * @returns {Function} Returns `func`.
 */
var baseSetToString = !defineProperty ? identity : function(func, string) {
  return defineProperty(func, 'toString', {
    'configurable': true,
    'enumerable': false,
    'value': constant(string),
    'writable': true
  });
};

/**
 * Creates a clone of  `buffer`.
 *
 * @private
 * @param {Buffer} buffer The buffer to clone.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Buffer} Returns the cloned buffer.
 */
function cloneBuffer(buffer, isDeep) {
  if (isDeep) {
    return buffer.slice();
  }
  var length = buffer.length,
      result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);

  buffer.copy(result);
  return result;
}

/**
 * Creates a clone of `arrayBuffer`.
 *
 * @private
 * @param {ArrayBuffer} arrayBuffer The array buffer to clone.
 * @returns {ArrayBuffer} Returns the cloned array buffer.
 */
function cloneArrayBuffer(arrayBuffer) {
  var result = new arrayBuffer.constructor(arrayBuffer.byteLength);
  new Uint8Array(result).set(new Uint8Array(arrayBuffer));
  return result;
}

/**
 * Creates a clone of `typedArray`.
 *
 * @private
 * @param {Object} typedArray The typed array to clone.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Object} Returns the cloned typed array.
 */
function cloneTypedArray(typedArray, isDeep) {
  var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;
  return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);
}

/**
 * Copies the values of `source` to `array`.
 *
 * @private
 * @param {Array} source The array to copy values from.
 * @param {Array} [array=[]] The array to copy values to.
 * @returns {Array} Returns `array`.
 */
function copyArray(source, array) {
  var index = -1,
      length = source.length;

  array || (array = Array(length));
  while (++index < length) {
    array[index] = source[index];
  }
  return array;
}

/**
 * Copies properties of `source` to `object`.
 *
 * @private
 * @param {Object} source The object to copy properties from.
 * @param {Array} props The property identifiers to copy.
 * @param {Object} [object={}] The object to copy properties to.
 * @param {Function} [customizer] The function to customize copied values.
 * @returns {Object} Returns `object`.
 */
function copyObject(source, props, object, customizer) {
  var isNew = !object;
  object || (object = {});

  var index = -1,
      length = props.length;

  while (++index < length) {
    var key = props[index];

    var newValue = customizer
      ? customizer(object[key], source[key], key, object, source)
      : undefined;

    if (newValue === undefined) {
      newValue = source[key];
    }
    if (isNew) {
      baseAssignValue(object, key, newValue);
    } else {
      assignValue(object, key, newValue);
    }
  }
  return object;
}

/**
 * Creates a function like `_.assign`.
 *
 * @private
 * @param {Function} assigner The function to assign values.
 * @returns {Function} Returns the new assigner function.
 */
function createAssigner(assigner) {
  return baseRest(function(object, sources) {
    var index = -1,
        length = sources.length,
        customizer = length > 1 ? sources[length - 1] : undefined,
        guard = length > 2 ? sources[2] : undefined;

    customizer = (assigner.length > 3 && typeof customizer == 'function')
      ? (length--, customizer)
      : undefined;

    if (guard && isIterateeCall(sources[0], sources[1], guard)) {
      customizer = length < 3 ? undefined : customizer;
      length = 1;
    }
    object = Object(object);
    while (++index < length) {
      var source = sources[index];
      if (source) {
        assigner(object, source, index, customizer);
      }
    }
    return object;
  });
}

/**
 * Creates a base function for methods like `_.forIn` and `_.forOwn`.
 *
 * @private
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {Function} Returns the new base function.
 */
function createBaseFor(fromRight) {
  return function(object, iteratee, keysFunc) {
    var index = -1,
        iterable = Object(object),
        props = keysFunc(object),
        length = props.length;

    while (length--) {
      var key = props[fromRight ? length : ++index];
      if (iteratee(iterable[key], key, iterable) === false) {
        break;
      }
    }
    return object;
  };
}

/**
 * Gets the data for `map`.
 *
 * @private
 * @param {Object} map The map to query.
 * @param {string} key The reference key.
 * @returns {*} Returns the map data.
 */
function getMapData(map, key) {
  var data = map.__data__;
  return isKeyable(key)
    ? data[typeof key == 'string' ? 'string' : 'hash']
    : data.map;
}

/**
 * Gets the native function at `key` of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {string} key The key of the method to get.
 * @returns {*} Returns the function if it's native, else `undefined`.
 */
function getNative(object, key) {
  var value = getValue(object, key);
  return baseIsNative(value) ? value : undefined;
}

/**
 * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
 *
 * @private
 * @param {*} value The value to query.
 * @returns {string} Returns the raw `toStringTag`.
 */
function getRawTag(value) {
  var isOwn = hasOwnProperty.call(value, symToStringTag),
      tag = value[symToStringTag];

  try {
    value[symToStringTag] = undefined;
    var unmasked = true;
  } catch (e) {}

  var result = nativeObjectToString.call(value);
  if (unmasked) {
    if (isOwn) {
      value[symToStringTag] = tag;
    } else {
      delete value[symToStringTag];
    }
  }
  return result;
}

/**
 * Initializes an object clone.
 *
 * @private
 * @param {Object} object The object to clone.
 * @returns {Object} Returns the initialized clone.
 */
function initCloneObject(object) {
  return (typeof object.constructor == 'function' && !isPrototype(object))
    ? baseCreate(getPrototype(object))
    : {};
}

/**
 * Checks if `value` is a valid array-like index.
 *
 * @private
 * @param {*} value The value to check.
 * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
 * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
 */
function isIndex(value, length) {
  var type = typeof value;
  length = length == null ? MAX_SAFE_INTEGER : length;

  return !!length &&
    (type == 'number' ||
      (type != 'symbol' && reIsUint.test(value))) &&
        (value > -1 && value % 1 == 0 && value < length);
}

/**
 * Checks if the given arguments are from an iteratee call.
 *
 * @private
 * @param {*} value The potential iteratee value argument.
 * @param {*} index The potential iteratee index or key argument.
 * @param {*} object The potential iteratee object argument.
 * @returns {boolean} Returns `true` if the arguments are from an iteratee call,
 *  else `false`.
 */
function isIterateeCall(value, index, object) {
  if (!isObject(object)) {
    return false;
  }
  var type = typeof index;
  if (type == 'number'
        ? (isArrayLike(object) && isIndex(index, object.length))
        : (type == 'string' && index in object)
      ) {
    return eq(object[index], value);
  }
  return false;
}

/**
 * Checks if `value` is suitable for use as unique object key.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
 */
function isKeyable(value) {
  var type = typeof value;
  return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
    ? (value !== '__proto__')
    : (value === null);
}

/**
 * Checks if `func` has its source masked.
 *
 * @private
 * @param {Function} func The function to check.
 * @returns {boolean} Returns `true` if `func` is masked, else `false`.
 */
function isMasked(func) {
  return !!maskSrcKey && (maskSrcKey in func);
}

/**
 * Checks if `value` is likely a prototype object.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
 */
function isPrototype(value) {
  var Ctor = value && value.constructor,
      proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;

  return value === proto;
}

/**
 * This function is like
 * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
 * except that it includes inherited enumerable properties.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 */
function nativeKeysIn(object) {
  var result = [];
  if (object != null) {
    for (var key in Object(object)) {
      result.push(key);
    }
  }
  return result;
}

/**
 * Converts `value` to a string using `Object.prototype.toString`.
 *
 * @private
 * @param {*} value The value to convert.
 * @returns {string} Returns the converted string.
 */
function objectToString(value) {
  return nativeObjectToString.call(value);
}

/**
 * A specialized version of `baseRest` which transforms the rest array.
 *
 * @private
 * @param {Function} func The function to apply a rest parameter to.
 * @param {number} [start=func.length-1] The start position of the rest parameter.
 * @param {Function} transform The rest array transform.
 * @returns {Function} Returns the new function.
 */
function overRest(func, start, transform) {
  start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
  return function() {
    var args = arguments,
        index = -1,
        length = nativeMax(args.length - start, 0),
        array = Array(length);

    while (++index < length) {
      array[index] = args[start + index];
    }
    index = -1;
    var otherArgs = Array(start + 1);
    while (++index < start) {
      otherArgs[index] = args[index];
    }
    otherArgs[start] = transform(array);
    return apply(func, this, otherArgs);
  };
}

/**
 * Gets the value at `key`, unless `key` is "__proto__" or "constructor".
 *
 * @private
 * @param {Object} object The object to query.
 * @param {string} key The key of the property to get.
 * @returns {*} Returns the property value.
 */
function safeGet(object, key) {
  if (key === 'constructor' && typeof object[key] === 'function') {
    return;
  }

  if (key == '__proto__') {
    return;
  }

  return object[key];
}

/**
 * Sets the `toString` method of `func` to return `string`.
 *
 * @private
 * @param {Function} func The function to modify.
 * @param {Function} string The `toString` result.
 * @returns {Function} Returns `func`.
 */
var setToString = shortOut(baseSetToString);

/**
 * Creates a function that'll short out and invoke `identity` instead
 * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`
 * milliseconds.
 *
 * @private
 * @param {Function} func The function to restrict.
 * @returns {Function} Returns the new shortable function.
 */
function shortOut(func) {
  var count = 0,
      lastCalled = 0;

  return function() {
    var stamp = nativeNow(),
        remaining = HOT_SPAN - (stamp - lastCalled);

    lastCalled = stamp;
    if (remaining > 0) {
      if (++count >= HOT_COUNT) {
        return arguments[0];
      }
    } else {
      count = 0;
    }
    return func.apply(undefined, arguments);
  };
}

/**
 * Converts `func` to its source code.
 *
 * @private
 * @param {Function} func The function to convert.
 * @returns {string} Returns the source code.
 */
function toSource(func) {
  if (func != null) {
    try {
      return funcToString.call(func);
    } catch (e) {}
    try {
      return (func + '');
    } catch (e) {}
  }
  return '';
}

/**
 * Performs a
 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * comparison between two values to determine if they are equivalent.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
 * @example
 *
 * var object = { 'a': 1 };
 * var other = { 'a': 1 };
 *
 * _.eq(object, object);
 * // => true
 *
 * _.eq(object, other);
 * // => false
 *
 * _.eq('a', 'a');
 * // => true
 *
 * _.eq('a', Object('a'));
 * // => false
 *
 * _.eq(NaN, NaN);
 * // => true
 */
function eq(value, other) {
  return value === other || (value !== value && other !== other);
}

/**
 * Checks if `value` is likely an `arguments` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an `arguments` object,
 *  else `false`.
 * @example
 *
 * _.isArguments(function() { return arguments; }());
 * // => true
 *
 * _.isArguments([1, 2, 3]);
 * // => false
 */
var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {
  return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&
    !propertyIsEnumerable.call(value, 'callee');
};

/**
 * Checks if `value` is classified as an `Array` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an array, else `false`.
 * @example
 *
 * _.isArray([1, 2, 3]);
 * // => true
 *
 * _.isArray(document.body.children);
 * // => false
 *
 * _.isArray('abc');
 * // => false
 *
 * _.isArray(_.noop);
 * // => false
 */
var isArray = Array.isArray;

/**
 * Checks if `value` is array-like. A value is considered array-like if it's
 * not a function and has a `value.length` that's an integer greater than or
 * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
 * @example
 *
 * _.isArrayLike([1, 2, 3]);
 * // => true
 *
 * _.isArrayLike(document.body.children);
 * // => true
 *
 * _.isArrayLike('abc');
 * // => true
 *
 * _.isArrayLike(_.noop);
 * // => false
 */
function isArrayLike(value) {
  return value != null && isLength(value.length) && !isFunction(value);
}

/**
 * This method is like `_.isArrayLike` except that it also checks if `value`
 * is an object.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an array-like object,
 *  else `false`.
 * @example
 *
 * _.isArrayLikeObject([1, 2, 3]);
 * // => true
 *
 * _.isArrayLikeObject(document.body.children);
 * // => true
 *
 * _.isArrayLikeObject('abc');
 * // => false
 *
 * _.isArrayLikeObject(_.noop);
 * // => false
 */
function isArrayLikeObject(value) {
  return isObjectLike(value) && isArrayLike(value);
}

/**
 * Checks if `value` is a buffer.
 *
 * @static
 * @memberOf _
 * @since 4.3.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
 * @example
 *
 * _.isBuffer(new Buffer(2));
 * // => true
 *
 * _.isBuffer(new Uint8Array(2));
 * // => false
 */
var isBuffer = nativeIsBuffer || stubFalse;

/**
 * Checks if `value` is classified as a `Function` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a function, else `false`.
 * @example
 *
 * _.isFunction(_);
 * // => true
 *
 * _.isFunction(/abc/);
 * // => false
 */
function isFunction(value) {
  if (!isObject(value)) {
    return false;
  }
  // The use of `Object#toString` avoids issues with the `typeof` operator
  // in Safari 9 which returns 'object' for typed arrays and other constructors.
  var tag = baseGetTag(value);
  return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
}

/**
 * Checks if `value` is a valid array-like length.
 *
 * **Note:** This method is loosely based on
 * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
 * @example
 *
 * _.isLength(3);
 * // => true
 *
 * _.isLength(Number.MIN_VALUE);
 * // => false
 *
 * _.isLength(Infinity);
 * // => false
 *
 * _.isLength('3');
 * // => false
 */
function isLength(value) {
  return typeof value == 'number' &&
    value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
}

/**
 * Checks if `value` is the
 * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
 * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an object, else `false`.
 * @example
 *
 * _.isObject({});
 * // => true
 *
 * _.isObject([1, 2, 3]);
 * // => true
 *
 * _.isObject(_.noop);
 * // => true
 *
 * _.isObject(null);
 * // => false
 */
function isObject(value) {
  var type = typeof value;
  return value != null && (type == 'object' || type == 'function');
}

/**
 * Checks if `value` is object-like. A value is object-like if it's not `null`
 * and has a `typeof` result of "object".
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
 * @example
 *
 * _.isObjectLike({});
 * // => true
 *
 * _.isObjectLike([1, 2, 3]);
 * // => true
 *
 * _.isObjectLike(_.noop);
 * // => false
 *
 * _.isObjectLike(null);
 * // => false
 */
function isObjectLike(value) {
  return value != null && typeof value == 'object';
}

/**
 * Checks if `value` is a plain object, that is, an object created by the
 * `Object` constructor or one with a `[[Prototype]]` of `null`.
 *
 * @static
 * @memberOf _
 * @since 0.8.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 * }
 *
 * _.isPlainObject(new Foo);
 * // => false
 *
 * _.isPlainObject([1, 2, 3]);
 * // => false
 *
 * _.isPlainObject({ 'x': 0, 'y': 0 });
 * // => true
 *
 * _.isPlainObject(Object.create(null));
 * // => true
 */
function isPlainObject(value) {
  if (!isObjectLike(value) || baseGetTag(value) != objectTag) {
    return false;
  }
  var proto = getPrototype(value);
  if (proto === null) {
    return true;
  }
  var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;
  return typeof Ctor == 'function' && Ctor instanceof Ctor &&
    funcToString.call(Ctor) == objectCtorString;
}

/**
 * Checks if `value` is classified as a typed array.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
 * @example
 *
 * _.isTypedArray(new Uint8Array);
 * // => true
 *
 * _.isTypedArray([]);
 * // => false
 */
var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;

/**
 * Converts `value` to a plain object flattening inherited enumerable string
 * keyed properties of `value` to own properties of the plain object.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Lang
 * @param {*} value The value to convert.
 * @returns {Object} Returns the converted plain object.
 * @example
 *
 * function Foo() {
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.assign({ 'a': 1 }, new Foo);
 * // => { 'a': 1, 'b': 2 }
 *
 * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
 * // => { 'a': 1, 'b': 2, 'c': 3 }
 */
function toPlainObject(value) {
  return copyObject(value, keysIn(value));
}

/**
 * Creates an array of the own and inherited enumerable property names of `object`.
 *
 * **Note:** Non-object values are coerced to objects.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Object
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.keysIn(new Foo);
 * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
 */
function keysIn(object) {
  return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);
}

/**
 * This method is like `_.assign` except that it recursively merges own and
 * inherited enumerable string keyed properties of source objects into the
 * destination object. Source properties that resolve to `undefined` are
 * skipped if a destination value exists. Array and plain object properties
 * are merged recursively. Other objects and value types are overridden by
 * assignment. Source objects are applied from left to right. Subsequent
 * sources overwrite property assignments of previous sources.
 *
 * **Note:** This method mutates `object`.
 *
 * @static
 * @memberOf _
 * @since 0.5.0
 * @category Object
 * @param {Object} object The destination object.
 * @param {...Object} [sources] The source objects.
 * @returns {Object} Returns `object`.
 * @example
 *
 * var object = {
 *   'a': [{ 'b': 2 }, { 'd': 4 }]
 * };
 *
 * var other = {
 *   'a': [{ 'c': 3 }, { 'e': 5 }]
 * };
 *
 * _.merge(object, other);
 * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
 */
var merge = createAssigner(function(object, source, srcIndex) {
  baseMerge(object, source, srcIndex);
});

/**
 * Creates a function that returns `value`.
 *
 * @static
 * @memberOf _
 * @since 2.4.0
 * @category Util
 * @param {*} value The value to return from the new function.
 * @returns {Function} Returns the new constant function.
 * @example
 *
 * var objects = _.times(2, _.constant({ 'a': 1 }));
 *
 * console.log(objects);
 * // => [{ 'a': 1 }, { 'a': 1 }]
 *
 * console.log(objects[0] === objects[1]);
 * // => true
 */
function constant(value) {
  return function() {
    return value;
  };
}

/**
 * This method returns the first argument it receives.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Util
 * @param {*} value Any value.
 * @returns {*} Returns `value`.
 * @example
 *
 * var object = { 'a': 1 };
 *
 * console.log(_.identity(object) === object);
 * // => true
 */
function identity(value) {
  return value;
}

/**
 * This method returns `false`.
 *
 * @static
 * @memberOf _
 * @since 4.13.0
 * @category Util
 * @returns {boolean} Returns `false`.
 * @example
 *
 * _.times(2, _.stubFalse);
 * // => [false, false]
 */
function stubFalse() {
  return false;
}

module.exports = merge;

/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(5), __webpack_require__(8)(module)))

/***/ }),

/***/ 5:
/***/ (function(module, exports) {

var g;

// This works in non-strict mode
g = (function() {
	return this;
})();

try {
	// This works if eval is allowed (see CSP)
	g = g || Function("return this")() || (1,eval)("this");
} catch(e) {
	// This works if the window reference is available
	if(typeof window === "object")
		g = window;
}

// g can still be undefined, but nothing to do about it...
// We return undefined, instead of nothing here, so it's
// easier to handle this case. if(!global) { ...}

module.exports = g;


/***/ }),

/***/ 6:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var EventEmitter = function () {
  function EventEmitter() {
    _classCallCheck(this, EventEmitter);

    this.observers = {};
  }

  EventEmitter.prototype.on = function on(events, listener) {
    var _this = this;

    events.split(' ').forEach(function (event) {
      _this.observers[event] = _this.observers[event] || [];
      _this.observers[event].push(listener);
    });
  };

  EventEmitter.prototype.off = function off(event, listener) {
    var _this2 = this;

    if (!this.observers[event]) {
      return;
    }

    this.observers[event].forEach(function () {
      if (!listener) {
        delete _this2.observers[event];
      } else {
        var index = _this2.observers[event].indexOf(listener);
        if (index > -1) {
          _this2.observers[event].splice(index, 1);
        }
      }
    });
  };

  EventEmitter.prototype.emit = function emit(event) {
    for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
      args[_key - 1] = arguments[_key];
    }

    if (this.observers[event]) {
      var cloned = [].concat(this.observers[event]);
      cloned.forEach(function (observer) {
        observer.apply(undefined, args);
      });
    }

    if (this.observers['*']) {
      var _cloned = [].concat(this.observers['*']);
      _cloned.forEach(function (observer) {
        var _ref;

        observer.apply(observer, (_ref = [event]).concat.apply(_ref, args));
      });
    }
  };

  return EventEmitter;
}();

/* harmony default export */ __webpack_exports__["a"] = (EventEmitter);

/***/ }),

/***/ 7:
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(module, global, process) {var __WEBPACK_AMD_DEFINE_RESULT__;// Copyright (c) Microsoft, All rights reserved. See License.txt in the project root for license information.

;(function (undefined) {

  var objectTypes = {
    'function': true,
    'object': true
  };

  function checkGlobal(value) {
    return (value && value.Object === Object) ? value : null;
  }

  var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
  var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
  var freeGlobal = checkGlobal(freeExports && freeModule && typeof global === 'object' && global);
  var freeSelf = checkGlobal(objectTypes[typeof self] && self);
  var freeWindow = checkGlobal(objectTypes[typeof window] && window);
  var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
  var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
  var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();

  var Rx = {
    internals: {},
    config: {
      Promise: root.Promise
    },
    helpers: { }
  };

  // Defaults
  var noop = Rx.helpers.noop = function () { },
    identity = Rx.helpers.identity = function (x) { return x; },
    defaultNow = Rx.helpers.defaultNow = Date.now,
    defaultComparer = Rx.helpers.defaultComparer = function (x, y) { return isEqual(x, y); },
    defaultSubComparer = Rx.helpers.defaultSubComparer = function (x, y) { return x > y ? 1 : (x < y ? -1 : 0); },
    defaultKeySerializer = Rx.helpers.defaultKeySerializer = function (x) { return x.toString(); },
    defaultError = Rx.helpers.defaultError = function (err) { throw err; },
    isPromise = Rx.helpers.isPromise = function (p) { return !!p && typeof p.subscribe !== 'function' && typeof p.then === 'function'; },
    isFunction = Rx.helpers.isFunction = (function () {

      var isFn = function (value) {
        return typeof value == 'function' || false;
      };

      // fallback for older versions of Chrome and Safari
      if (isFn(/x/)) {
        isFn = function(value) {
          return typeof value == 'function' && toString.call(value) == '[object Function]';
        };
      }

      return isFn;
    }());

  function cloneArray(arr) { for(var a = [], i = 0, len = arr.length; i < len; i++) { a.push(arr[i]); } return a;}

  var errorObj = {e: {}};
  
  function tryCatcherGen(tryCatchTarget) {
    return function tryCatcher() {
      try {
        return tryCatchTarget.apply(this, arguments);
      } catch (e) {
        errorObj.e = e;
        return errorObj;
      }
    };
  }

  var tryCatch = Rx.internals.tryCatch = function tryCatch(fn) {
    if (!isFunction(fn)) { throw new TypeError('fn must be a function'); }
    return tryCatcherGen(fn);
  };

  function thrower(e) {
    throw e;
  }

  Rx.config.longStackSupport = false;
  var hasStacks = false, stacks = tryCatch(function () { throw new Error(); })();
  hasStacks = !!stacks.e && !!stacks.e.stack;

  // All code after this point will be filtered from stack traces reported by RxJS
  var rStartingLine = captureLine(), rFileName;

  var STACK_JUMP_SEPARATOR = 'From previous event:';

  function makeStackTraceLong(error, observable) {
    // If possible, transform the error stack trace by removing Node and RxJS
    // cruft, then concatenating with the stack trace of `observable`.
    if (hasStacks &&
        observable.stack &&
        typeof error === 'object' &&
        error !== null &&
        error.stack &&
        error.stack.indexOf(STACK_JUMP_SEPARATOR) === -1
    ) {
      var stacks = [];
      for (var o = observable; !!o; o = o.source) {
        if (o.stack) {
          stacks.unshift(o.stack);
        }
      }
      stacks.unshift(error.stack);

      var concatedStacks = stacks.join('\n' + STACK_JUMP_SEPARATOR + '\n');
      error.stack = filterStackString(concatedStacks);
    }
  }

  function filterStackString(stackString) {
    var lines = stackString.split('\n'), desiredLines = [];
    for (var i = 0, len = lines.length; i < len; i++) {
      var line = lines[i];

      if (!isInternalFrame(line) && !isNodeFrame(line) && line) {
        desiredLines.push(line);
      }
    }
    return desiredLines.join('\n');
  }

  function isInternalFrame(stackLine) {
    var fileNameAndLineNumber = getFileNameAndLineNumber(stackLine);
    if (!fileNameAndLineNumber) {
      return false;
    }
    var fileName = fileNameAndLineNumber[0], lineNumber = fileNameAndLineNumber[1];

    return fileName === rFileName &&
      lineNumber >= rStartingLine &&
      lineNumber <= rEndingLine;
  }

  function isNodeFrame(stackLine) {
    return stackLine.indexOf('(module.js:') !== -1 ||
      stackLine.indexOf('(node.js:') !== -1;
  }

  function captureLine() {
    if (!hasStacks) { return; }

    try {
      throw new Error();
    } catch (e) {
      var lines = e.stack.split('\n');
      var firstLine = lines[0].indexOf('@') > 0 ? lines[1] : lines[2];
      var fileNameAndLineNumber = getFileNameAndLineNumber(firstLine);
      if (!fileNameAndLineNumber) { return; }

      rFileName = fileNameAndLineNumber[0];
      return fileNameAndLineNumber[1];
    }
  }

  function getFileNameAndLineNumber(stackLine) {
    // Named functions: 'at functionName (filename:lineNumber:columnNumber)'
    var attempt1 = /at .+ \((.+):(\d+):(?:\d+)\)$/.exec(stackLine);
    if (attempt1) { return [attempt1[1], Number(attempt1[2])]; }

    // Anonymous functions: 'at filename:lineNumber:columnNumber'
    var attempt2 = /at ([^ ]+):(\d+):(?:\d+)$/.exec(stackLine);
    if (attempt2) { return [attempt2[1], Number(attempt2[2])]; }

    // Firefox style: 'function@filename:lineNumber or @filename:lineNumber'
    var attempt3 = /.*@(.+):(\d+)$/.exec(stackLine);
    if (attempt3) { return [attempt3[1], Number(attempt3[2])]; }
  }

  var EmptyError = Rx.EmptyError = function() {
    this.message = 'Sequence contains no elements.';
    Error.call(this);
  };
  EmptyError.prototype = Object.create(Error.prototype);
  EmptyError.prototype.name = 'EmptyError';

  var ObjectDisposedError = Rx.ObjectDisposedError = function() {
    this.message = 'Object has been disposed';
    Error.call(this);
  };
  ObjectDisposedError.prototype = Object.create(Error.prototype);
  ObjectDisposedError.prototype.name = 'ObjectDisposedError';

  var ArgumentOutOfRangeError = Rx.ArgumentOutOfRangeError = function () {
    this.message = 'Argument out of range';
    Error.call(this);
  };
  ArgumentOutOfRangeError.prototype = Object.create(Error.prototype);
  ArgumentOutOfRangeError.prototype.name = 'ArgumentOutOfRangeError';

  var NotSupportedError = Rx.NotSupportedError = function (message) {
    this.message = message || 'This operation is not supported';
    Error.call(this);
  };
  NotSupportedError.prototype = Object.create(Error.prototype);
  NotSupportedError.prototype.name = 'NotSupportedError';

  var NotImplementedError = Rx.NotImplementedError = function (message) {
    this.message = message || 'This operation is not implemented';
    Error.call(this);
  };
  NotImplementedError.prototype = Object.create(Error.prototype);
  NotImplementedError.prototype.name = 'NotImplementedError';

  var notImplemented = Rx.helpers.notImplemented = function () {
    throw new NotImplementedError();
  };

  var notSupported = Rx.helpers.notSupported = function () {
    throw new NotSupportedError();
  };

  // Shim in iterator support
  var $iterator$ = (typeof Symbol === 'function' && Symbol.iterator) ||
    '_es6shim_iterator_';
  // Bug for mozilla version
  if (root.Set && typeof new root.Set()['@@iterator'] === 'function') {
    $iterator$ = '@@iterator';
  }

  var doneEnumerator = Rx.doneEnumerator = { done: true, value: undefined };

  var isIterable = Rx.helpers.isIterable = function (o) {
    return o && o[$iterator$] !== undefined;
  };

  var isArrayLike = Rx.helpers.isArrayLike = function (o) {
    return o && o.length !== undefined;
  };

  Rx.helpers.iterator = $iterator$;

  var bindCallback = Rx.internals.bindCallback = function (func, thisArg, argCount) {
    if (typeof thisArg === 'undefined') { return func; }
    switch(argCount) {
      case 0:
        return function() {
          return func.call(thisArg)
        };
      case 1:
        return function(arg) {
          return func.call(thisArg, arg);
        };
      case 2:
        return function(value, index) {
          return func.call(thisArg, value, index);
        };
      case 3:
        return function(value, index, collection) {
          return func.call(thisArg, value, index, collection);
        };
    }

    return function() {
      return func.apply(thisArg, arguments);
    };
  };

  /** Used to determine if values are of the language type Object */
  var dontEnums = ['toString',
    'toLocaleString',
    'valueOf',
    'hasOwnProperty',
    'isPrototypeOf',
    'propertyIsEnumerable',
    'constructor'],
  dontEnumsLength = dontEnums.length;

var argsTag = '[object Arguments]',
    arrayTag = '[object Array]',
    boolTag = '[object Boolean]',
    dateTag = '[object Date]',
    errorTag = '[object Error]',
    funcTag = '[object Function]',
    mapTag = '[object Map]',
    numberTag = '[object Number]',
    objectTag = '[object Object]',
    regexpTag = '[object RegExp]',
    setTag = '[object Set]',
    stringTag = '[object String]',
    weakMapTag = '[object WeakMap]';

var arrayBufferTag = '[object ArrayBuffer]',
    float32Tag = '[object Float32Array]',
    float64Tag = '[object Float64Array]',
    int8Tag = '[object Int8Array]',
    int16Tag = '[object Int16Array]',
    int32Tag = '[object Int32Array]',
    uint8Tag = '[object Uint8Array]',
    uint8ClampedTag = '[object Uint8ClampedArray]',
    uint16Tag = '[object Uint16Array]',
    uint32Tag = '[object Uint32Array]';

var typedArrayTags = {};
typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
typedArrayTags[uint32Tag] = true;
typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
typedArrayTags[dateTag] = typedArrayTags[errorTag] =
typedArrayTags[funcTag] = typedArrayTags[mapTag] =
typedArrayTags[numberTag] = typedArrayTags[objectTag] =
typedArrayTags[regexpTag] = typedArrayTags[setTag] =
typedArrayTags[stringTag] = typedArrayTags[weakMapTag] = false;

var objectProto = Object.prototype,
    hasOwnProperty = objectProto.hasOwnProperty,
    objToString = objectProto.toString,
    MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;

var keys = Object.keys || (function() {
    var hasOwnProperty = Object.prototype.hasOwnProperty,
        hasDontEnumBug = !({ toString: null }).propertyIsEnumerable('toString'),
        dontEnums = [
          'toString',
          'toLocaleString',
          'valueOf',
          'hasOwnProperty',
          'isPrototypeOf',
          'propertyIsEnumerable',
          'constructor'
        ],
        dontEnumsLength = dontEnums.length;

    return function(obj) {
      if (typeof obj !== 'object' && (typeof obj !== 'function' || obj === null)) {
        throw new TypeError('Object.keys called on non-object');
      }

      var result = [], prop, i;

      for (prop in obj) {
        if (hasOwnProperty.call(obj, prop)) {
          result.push(prop);
        }
      }

      if (hasDontEnumBug) {
        for (i = 0; i < dontEnumsLength; i++) {
          if (hasOwnProperty.call(obj, dontEnums[i])) {
            result.push(dontEnums[i]);
          }
        }
      }
      return result;
    };
  }());

function equalObjects(object, other, equalFunc, isLoose, stackA, stackB) {
  var objProps = keys(object),
      objLength = objProps.length,
      othProps = keys(other),
      othLength = othProps.length;

  if (objLength !== othLength && !isLoose) {
    return false;
  }
  var index = objLength, key;
  while (index--) {
    key = objProps[index];
    if (!(isLoose ? key in other : hasOwnProperty.call(other, key))) {
      return false;
    }
  }
  var skipCtor = isLoose;
  while (++index < objLength) {
    key = objProps[index];
    var objValue = object[key],
        othValue = other[key],
        result;

    if (!(result === undefined ? equalFunc(objValue, othValue, isLoose, stackA, stackB) : result)) {
      return false;
    }
    skipCtor || (skipCtor = key === 'constructor');
  }
  if (!skipCtor) {
    var objCtor = object.constructor,
        othCtor = other.constructor;

    if (objCtor !== othCtor &&
        ('constructor' in object && 'constructor' in other) &&
        !(typeof objCtor === 'function' && objCtor instanceof objCtor &&
          typeof othCtor === 'function' && othCtor instanceof othCtor)) {
      return false;
    }
  }
  return true;
}

function equalByTag(object, other, tag) {
  switch (tag) {
    case boolTag:
    case dateTag:
      return +object === +other;

    case errorTag:
      return object.name === other.name && object.message === other.message;

    case numberTag:
      return (object !== +object) ?
        other !== +other :
        object === +other;

    case regexpTag:
    case stringTag:
      return object === (other + '');
  }
  return false;
}

var isObject = Rx.internals.isObject = function(value) {
  var type = typeof value;
  return !!value && (type === 'object' || type === 'function');
};

function isObjectLike(value) {
  return !!value && typeof value === 'object';
}

function isLength(value) {
  return typeof value === 'number' && value > -1 && value % 1 === 0 && value <= MAX_SAFE_INTEGER;
}

var isHostObject = (function() {
  try {
    Object({ 'toString': 0 } + '');
  } catch(e) {
    return function() { return false; };
  }
  return function(value) {
    return typeof value.toString !== 'function' && typeof (value + '') === 'string';
  };
}());

function isTypedArray(value) {
  return isObjectLike(value) && isLength(value.length) && !!typedArrayTags[objToString.call(value)];
}

var isArray = Array.isArray || function(value) {
  return isObjectLike(value) && isLength(value.length) && objToString.call(value) === arrayTag;
};

function arraySome (array, predicate) {
  var index = -1,
      length = array.length;

  while (++index < length) {
    if (predicate(array[index], index, array)) {
      return true;
    }
  }
  return false;
}

function equalArrays(array, other, equalFunc, isLoose, stackA, stackB) {
  var index = -1,
      arrLength = array.length,
      othLength = other.length;

  if (arrLength !== othLength && !(isLoose && othLength > arrLength)) {
    return false;
  }
  // Ignore non-index properties.
  while (++index < arrLength) {
    var arrValue = array[index],
        othValue = other[index],
        result;

    if (result !== undefined) {
      if (result) {
        continue;
      }
      return false;
    }
    // Recursively compare arrays (susceptible to call stack limits).
    if (isLoose) {
      if (!arraySome(other, function(othValue) {
            return arrValue === othValue || equalFunc(arrValue, othValue, isLoose, stackA, stackB);
          })) {
        return false;
      }
    } else if (!(arrValue === othValue || equalFunc(arrValue, othValue, isLoose, stackA, stackB))) {
      return false;
    }
  }
  return true;
}

function baseIsEqualDeep(object, other, equalFunc, isLoose, stackA, stackB) {
  var objIsArr = isArray(object),
      othIsArr = isArray(other),
      objTag = arrayTag,
      othTag = arrayTag;

  if (!objIsArr) {
    objTag = objToString.call(object);
    if (objTag === argsTag) {
      objTag = objectTag;
    } else if (objTag !== objectTag) {
      objIsArr = isTypedArray(object);
    }
  }
  if (!othIsArr) {
    othTag = objToString.call(other);
    if (othTag === argsTag) {
      othTag = objectTag;
    }
  }
  var objIsObj = objTag === objectTag && !isHostObject(object),
      othIsObj = othTag === objectTag && !isHostObject(other),
      isSameTag = objTag === othTag;

  if (isSameTag && !(objIsArr || objIsObj)) {
    return equalByTag(object, other, objTag);
  }
  if (!isLoose) {
    var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
        othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');

    if (objIsWrapped || othIsWrapped) {
      return equalFunc(objIsWrapped ? object.value() : object, othIsWrapped ? other.value() : other, isLoose, stackA, stackB);
    }
  }
  if (!isSameTag) {
    return false;
  }
  // Assume cyclic values are equal.
  // For more information on detecting circular references see https://es5.github.io/#JO.
  stackA || (stackA = []);
  stackB || (stackB = []);

  var length = stackA.length;
  while (length--) {
    if (stackA[length] === object) {
      return stackB[length] === other;
    }
  }
  // Add `object` and `other` to the stack of traversed objects.
  stackA.push(object);
  stackB.push(other);

  var result = (objIsArr ? equalArrays : equalObjects)(object, other, equalFunc, isLoose, stackA, stackB);

  stackA.pop();
  stackB.pop();

  return result;
}

function baseIsEqual(value, other, isLoose, stackA, stackB) {
  if (value === other) {
    return true;
  }
  if (value == null || other == null || (!isObject(value) && !isObjectLike(other))) {
    return value !== value && other !== other;
  }
  return baseIsEqualDeep(value, other, baseIsEqual, isLoose, stackA, stackB);
}

var isEqual = Rx.internals.isEqual = function (value, other) {
  return baseIsEqual(value, other);
};

  var hasProp = {}.hasOwnProperty,
      slice = Array.prototype.slice;

  var inherits = Rx.internals.inherits = function (child, parent) {
    function __() { this.constructor = child; }
    __.prototype = parent.prototype;
    child.prototype = new __();
  };

  var addProperties = Rx.internals.addProperties = function (obj) {
    for(var sources = [], i = 1, len = arguments.length; i < len; i++) { sources.push(arguments[i]); }
    for (var idx = 0, ln = sources.length; idx < ln; idx++) {
      var source = sources[idx];
      for (var prop in source) {
        obj[prop] = source[prop];
      }
    }
  };

  // Rx Utils
  var addRef = Rx.internals.addRef = function (xs, r) {
    return new AnonymousObservable(function (observer) {
      return new BinaryDisposable(r.getDisposable(), xs.subscribe(observer));
    });
  };

  function arrayInitialize(count, factory) {
    var a = new Array(count);
    for (var i = 0; i < count; i++) {
      a[i] = factory();
    }
    return a;
  }

  function IndexedItem(id, value) {
    this.id = id;
    this.value = value;
  }

  IndexedItem.prototype.compareTo = function (other) {
    var c = this.value.compareTo(other.value);
    c === 0 && (c = this.id - other.id);
    return c;
  };

  var PriorityQueue = Rx.internals.PriorityQueue = function (capacity) {
    this.items = new Array(capacity);
    this.length = 0;
  };

  var priorityProto = PriorityQueue.prototype;
  priorityProto.isHigherPriority = function (left, right) {
    return this.items[left].compareTo(this.items[right]) < 0;
  };

  priorityProto.percolate = function (index) {
    if (index >= this.length || index < 0) { return; }
    var parent = index - 1 >> 1;
    if (parent < 0 || parent === index) { return; }
    if (this.isHigherPriority(index, parent)) {
      var temp = this.items[index];
      this.items[index] = this.items[parent];
      this.items[parent] = temp;
      this.percolate(parent);
    }
  };

  priorityProto.heapify = function (index) {
    +index || (index = 0);
    if (index >= this.length || index < 0) { return; }
    var left = 2 * index + 1,
        right = 2 * index + 2,
        first = index;
    if (left < this.length && this.isHigherPriority(left, first)) {
      first = left;
    }
    if (right < this.length && this.isHigherPriority(right, first)) {
      first = right;
    }
    if (first !== index) {
      var temp = this.items[index];
      this.items[index] = this.items[first];
      this.items[first] = temp;
      this.heapify(first);
    }
  };

  priorityProto.peek = function () { return this.items[0].value; };

  priorityProto.removeAt = function (index) {
    this.items[index] = this.items[--this.length];
    this.items[this.length] = undefined;
    this.heapify();
  };

  priorityProto.dequeue = function () {
    var result = this.peek();
    this.removeAt(0);
    return result;
  };

  priorityProto.enqueue = function (item) {
    var index = this.length++;
    this.items[index] = new IndexedItem(PriorityQueue.count++, item);
    this.percolate(index);
  };

  priorityProto.remove = function (item) {
    for (var i = 0; i < this.length; i++) {
      if (this.items[i].value === item) {
        this.removeAt(i);
        return true;
      }
    }
    return false;
  };
  PriorityQueue.count = 0;

  /**
   * Represents a group of disposable resources that are disposed together.
   * @constructor
   */
  var CompositeDisposable = Rx.CompositeDisposable = function () {
    var args = [], i, len;
    if (Array.isArray(arguments[0])) {
      args = arguments[0];
    } else {
      len = arguments.length;
      args = new Array(len);
      for(i = 0; i < len; i++) { args[i] = arguments[i]; }
    }
    this.disposables = args;
    this.isDisposed = false;
    this.length = args.length;
  };

  var CompositeDisposablePrototype = CompositeDisposable.prototype;

  /**
   * Adds a disposable to the CompositeDisposable or disposes the disposable if the CompositeDisposable is disposed.
   * @param {Mixed} item Disposable to add.
   */
  CompositeDisposablePrototype.add = function (item) {
    if (this.isDisposed) {
      item.dispose();
    } else {
      this.disposables.push(item);
      this.length++;
    }
  };

  /**
   * Removes and disposes the first occurrence of a disposable from the CompositeDisposable.
   * @param {Mixed} item Disposable to remove.
   * @returns {Boolean} true if found; false otherwise.
   */
  CompositeDisposablePrototype.remove = function (item) {
    var shouldDispose = false;
    if (!this.isDisposed) {
      var idx = this.disposables.indexOf(item);
      if (idx !== -1) {
        shouldDispose = true;
        this.disposables.splice(idx, 1);
        this.length--;
        item.dispose();
      }
    }
    return shouldDispose;
  };

  /**
   *  Disposes all disposables in the group and removes them from the group.
   */
  CompositeDisposablePrototype.dispose = function () {
    if (!this.isDisposed) {
      this.isDisposed = true;
      var len = this.disposables.length, currentDisposables = new Array(len);
      for(var i = 0; i < len; i++) { currentDisposables[i] = this.disposables[i]; }
      this.disposables = [];
      this.length = 0;

      for (i = 0; i < len; i++) {
        currentDisposables[i].dispose();
      }
    }
  };

  /**
   * Provides a set of static methods for creating Disposables.
   * @param {Function} dispose Action to run during the first call to dispose. The action is guaranteed to be run at most once.
   */
  var Disposable = Rx.Disposable = function (action) {
    this.isDisposed = false;
    this.action = action || noop;
  };

  /** Performs the task of cleaning up resources. */
  Disposable.prototype.dispose = function () {
    if (!this.isDisposed) {
      this.action();
      this.isDisposed = true;
    }
  };

  /**
   * Creates a disposable object that invokes the specified action when disposed.
   * @param {Function} dispose Action to run during the first call to dispose. The action is guaranteed to be run at most once.
   * @return {Disposable} The disposable object that runs the given action upon disposal.
   */
  var disposableCreate = Disposable.create = function (action) { return new Disposable(action); };

  /**
   * Gets the disposable that does nothing when disposed.
   */
  var disposableEmpty = Disposable.empty = { dispose: noop };

  /**
   * Validates whether the given object is a disposable
   * @param {Object} Object to test whether it has a dispose method
   * @returns {Boolean} true if a disposable object, else false.
   */
  var isDisposable = Disposable.isDisposable = function (d) {
    return d && isFunction(d.dispose);
  };

  var checkDisposed = Disposable.checkDisposed = function (disposable) {
    if (disposable.isDisposed) { throw new ObjectDisposedError(); }
  };

  var disposableFixup = Disposable._fixup = function (result) {
    return isDisposable(result) ? result : disposableEmpty;
  };

  // Single assignment
  var SingleAssignmentDisposable = Rx.SingleAssignmentDisposable = function () {
    this.isDisposed = false;
    this.current = null;
  };
  SingleAssignmentDisposable.prototype.getDisposable = function () {
    return this.current;
  };
  SingleAssignmentDisposable.prototype.setDisposable = function (value) {
    if (this.current) { throw new Error('Disposable has already been assigned'); }
    var shouldDispose = this.isDisposed;
    !shouldDispose && (this.current = value);
    shouldDispose && value && value.dispose();
  };
  SingleAssignmentDisposable.prototype.dispose = function () {
    if (!this.isDisposed) {
      this.isDisposed = true;
      var old = this.current;
      this.current = null;
      old && old.dispose();
    }
  };

  // Multiple assignment disposable
  var SerialDisposable = Rx.SerialDisposable = function () {
    this.isDisposed = false;
    this.current = null;
  };
  SerialDisposable.prototype.getDisposable = function () {
    return this.current;
  };
  SerialDisposable.prototype.setDisposable = function (value) {
    var shouldDispose = this.isDisposed;
    if (!shouldDispose) {
      var old = this.current;
      this.current = value;
    }
    old && old.dispose();
    shouldDispose && value && value.dispose();
  };
  SerialDisposable.prototype.dispose = function () {
    if (!this.isDisposed) {
      this.isDisposed = true;
      var old = this.current;
      this.current = null;
    }
    old && old.dispose();
  };

  var BinaryDisposable = Rx.BinaryDisposable = function (first, second) {
    this._first = first;
    this._second = second;
    this.isDisposed = false;
  };

  BinaryDisposable.prototype.dispose = function () {
    if (!this.isDisposed) {
      this.isDisposed = true;
      var old1 = this._first;
      this._first = null;
      old1 && old1.dispose();
      var old2 = this._second;
      this._second = null;
      old2 && old2.dispose();
    }
  };

  var NAryDisposable = Rx.NAryDisposable = function (disposables) {
    this._disposables = disposables;
    this.isDisposed = false;
  };

  NAryDisposable.prototype.dispose = function () {
    if (!this.isDisposed) {
      this.isDisposed = true;
      for (var i = 0, len = this._disposables.length; i < len; i++) {
        this._disposables[i].dispose();
      }
      this._disposables.length = 0;
    }
  };

  /**
   * Represents a disposable resource that only disposes its underlying disposable resource when all dependent disposable objects have been disposed.
   */
  var RefCountDisposable = Rx.RefCountDisposable = (function () {

    function InnerDisposable(disposable) {
      this.disposable = disposable;
      this.disposable.count++;
      this.isInnerDisposed = false;
    }

    InnerDisposable.prototype.dispose = function () {
      if (!this.disposable.isDisposed && !this.isInnerDisposed) {
        this.isInnerDisposed = true;
        this.disposable.count--;
        if (this.disposable.count === 0 && this.disposable.isPrimaryDisposed) {
          this.disposable.isDisposed = true;
          this.disposable.underlyingDisposable.dispose();
        }
      }
    };

    /**
     * Initializes a new instance of the RefCountDisposable with the specified disposable.
     * @constructor
     * @param {Disposable} disposable Underlying disposable.
      */
    function RefCountDisposable(disposable) {
      this.underlyingDisposable = disposable;
      this.isDisposed = false;
      this.isPrimaryDisposed = false;
      this.count = 0;
    }

    /**
     * Disposes the underlying disposable only when all dependent disposables have been disposed
     */
    RefCountDisposable.prototype.dispose = function () {
      if (!this.isDisposed && !this.isPrimaryDisposed) {
        this.isPrimaryDisposed = true;
        if (this.count === 0) {
          this.isDisposed = true;
          this.underlyingDisposable.dispose();
        }
      }
    };

    /**
     * Returns a dependent disposable that when disposed decreases the refcount on the underlying disposable.
     * @returns {Disposable} A dependent disposable contributing to the reference count that manages the underlying disposable's lifetime.
     */
    RefCountDisposable.prototype.getDisposable = function () {
      return this.isDisposed ? disposableEmpty : new InnerDisposable(this);
    };

    return RefCountDisposable;
  })();

  function ScheduledDisposable(scheduler, disposable) {
    this.scheduler = scheduler;
    this.disposable = disposable;
    this.isDisposed = false;
  }

  function scheduleItem(s, self) {
    if (!self.isDisposed) {
      self.isDisposed = true;
      self.disposable.dispose();
    }
  }

  ScheduledDisposable.prototype.dispose = function () {
    this.scheduler.schedule(this, scheduleItem);
  };

  var ScheduledItem = Rx.internals.ScheduledItem = function (scheduler, state, action, dueTime, comparer) {
    this.scheduler = scheduler;
    this.state = state;
    this.action = action;
    this.dueTime = dueTime;
    this.comparer = comparer || defaultSubComparer;
    this.disposable = new SingleAssignmentDisposable();
  };

  ScheduledItem.prototype.invoke = function () {
    this.disposable.setDisposable(this.invokeCore());
  };

  ScheduledItem.prototype.compareTo = function (other) {
    return this.comparer(this.dueTime, other.dueTime);
  };

  ScheduledItem.prototype.isCancelled = function () {
    return this.disposable.isDisposed;
  };

  ScheduledItem.prototype.invokeCore = function () {
    return disposableFixup(this.action(this.scheduler, this.state));
  };

  /** Provides a set of static properties to access commonly used schedulers. */
  var Scheduler = Rx.Scheduler = (function () {

    function Scheduler() { }

    /** Determines whether the given object is a scheduler */
    Scheduler.isScheduler = function (s) {
      return s instanceof Scheduler;
    };

    var schedulerProto = Scheduler.prototype;

    /**
   * Schedules an action to be executed.
   * @param state State passed to the action to be executed.
   * @param {Function} action Action to be executed.
   * @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).
   */
    schedulerProto.schedule = function (state, action) {
      throw new NotImplementedError();
    };

  /**
   * Schedules an action to be executed after dueTime.
   * @param state State passed to the action to be executed.
   * @param {Function} action Action to be executed.
   * @param {Number} dueTime Relative time after which to execute the action.
   * @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).
   */
    schedulerProto.scheduleFuture = function (state, dueTime, action) {
      var dt = dueTime;
      dt instanceof Date && (dt = dt - this.now());
      dt = Scheduler.normalize(dt);

      if (dt === 0) { return this.schedule(state, action); }

      return this._scheduleFuture(state, dt, action);
    };

    schedulerProto._scheduleFuture = function (state, dueTime, action) {
      throw new NotImplementedError();
    };

    /** Gets the current time according to the local machine's system clock. */
    Scheduler.now = defaultNow;

    /** Gets the current time according to the local machine's system clock. */
    Scheduler.prototype.now = defaultNow;

    /**
     * Normalizes the specified TimeSpan value to a positive value.
     * @param {Number} timeSpan The time span value to normalize.
     * @returns {Number} The specified TimeSpan value if it is zero or positive; otherwise, 0
     */
    Scheduler.normalize = function (timeSpan) {
      timeSpan < 0 && (timeSpan = 0);
      return timeSpan;
    };

    return Scheduler;
  }());

  var normalizeTime = Scheduler.normalize, isScheduler = Scheduler.isScheduler;

  (function (schedulerProto) {

    function invokeRecImmediate(scheduler, pair) {
      var state = pair[0], action = pair[1], group = new CompositeDisposable();
      action(state, innerAction);
      return group;

      function innerAction(state2) {
        var isAdded = false, isDone = false;

        var d = scheduler.schedule(state2, scheduleWork);
        if (!isDone) {
          group.add(d);
          isAdded = true;
        }

        function scheduleWork(_, state3) {
          if (isAdded) {
            group.remove(d);
          } else {
            isDone = true;
          }
          action(state3, innerAction);
          return disposableEmpty;
        }
      }
    }

    function invokeRecDate(scheduler, pair) {
      var state = pair[0], action = pair[1], group = new CompositeDisposable();
      action(state, innerAction);
      return group;

      function innerAction(state2, dueTime1) {
        var isAdded = false, isDone = false;

        var d = scheduler.scheduleFuture(state2, dueTime1, scheduleWork);
        if (!isDone) {
          group.add(d);
          isAdded = true;
        }

        function scheduleWork(_, state3) {
          if (isAdded) {
            group.remove(d);
          } else {
            isDone = true;
          }
          action(state3, innerAction);
          return disposableEmpty;
        }
      }
    }

    /**
     * Schedules an action to be executed recursively.
     * @param {Mixed} state State passed to the action to be executed.
     * @param {Function} action Action to execute recursively. The last parameter passed to the action is used to trigger recursive scheduling of the action, passing in recursive invocation state.
     * @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).
     */
    schedulerProto.scheduleRecursive = function (state, action) {
      return this.schedule([state, action], invokeRecImmediate);
    };

    /**
     * Schedules an action to be executed recursively after a specified relative or absolute due time.
     * @param {Mixed} state State passed to the action to be executed.
     * @param {Function} action Action to execute recursively. The last parameter passed to the action is used to trigger recursive scheduling of the action, passing in the recursive due time and invocation state.
     * @param {Number | Date} dueTime Relative or absolute time after which to execute the action for the first time.
     * @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).
     */
    schedulerProto.scheduleRecursiveFuture = function (state, dueTime, action) {
      return this.scheduleFuture([state, action], dueTime, invokeRecDate);
    };

  }(Scheduler.prototype));

  (function (schedulerProto) {

    /**
     * Schedules a periodic piece of work by dynamically discovering the scheduler's capabilities. The periodic task will be scheduled using window.setInterval for the base implementation.
     * @param {Mixed} state Initial state passed to the action upon the first iteration.
     * @param {Number} period Period for running the work periodically.
     * @param {Function} action Action to be executed, potentially updating the state.
     * @returns {Disposable} The disposable object used to cancel the scheduled recurring action (best effort).
     */
    schedulerProto.schedulePeriodic = function(state, period, action) {
      if (typeof root.setInterval === 'undefined') { throw new NotSupportedError(); }
      period = normalizeTime(period);
      var s = state, id = root.setInterval(function () { s = action(s); }, period);
      return disposableCreate(function () { root.clearInterval(id); });
    };

  }(Scheduler.prototype));

  (function (schedulerProto) {
    /**
     * Returns a scheduler that wraps the original scheduler, adding exception handling for scheduled actions.
     * @param {Function} handler Handler that's run if an exception is caught. The exception will be rethrown if the handler returns false.
     * @returns {Scheduler} Wrapper around the original scheduler, enforcing exception handling.
     */
    schedulerProto.catchError = schedulerProto['catch'] = function (handler) {
      return new CatchScheduler(this, handler);
    };
  }(Scheduler.prototype));

  var SchedulePeriodicRecursive = Rx.internals.SchedulePeriodicRecursive = (function () {
    function createTick(self) {
      return function tick(command, recurse) {
        recurse(0, self._period);
        var state = tryCatch(self._action)(self._state);
        if (state === errorObj) {
          self._cancel.dispose();
          thrower(state.e);
        }
        self._state = state;
      };
    }

    function SchedulePeriodicRecursive(scheduler, state, period, action) {
      this._scheduler = scheduler;
      this._state = state;
      this._period = period;
      this._action = action;
    }

    SchedulePeriodicRecursive.prototype.start = function () {
      var d = new SingleAssignmentDisposable();
      this._cancel = d;
      d.setDisposable(this._scheduler.scheduleRecursiveFuture(0, this._period, createTick(this)));

      return d;
    };

    return SchedulePeriodicRecursive;
  }());

  /** Gets a scheduler that schedules work immediately on the current thread. */
   var ImmediateScheduler = (function (__super__) {
    inherits(ImmediateScheduler, __super__);
    function ImmediateScheduler() {
      __super__.call(this);
    }

    ImmediateScheduler.prototype.schedule = function (state, action) {
      return disposableFixup(action(this, state));
    };

    return ImmediateScheduler;
  }(Scheduler));

  var immediateScheduler = Scheduler.immediate = new ImmediateScheduler();

  /**
   * Gets a scheduler that schedules work as soon as possible on the current thread.
   */
  var CurrentThreadScheduler = (function (__super__) {
    var queue;

    function runTrampoline () {
      while (queue.length > 0) {
        var item = queue.dequeue();
        !item.isCancelled() && item.invoke();
      }
    }

    inherits(CurrentThreadScheduler, __super__);
    function CurrentThreadScheduler() {
      __super__.call(this);
    }

    CurrentThreadScheduler.prototype.schedule = function (state, action) {
      var si = new ScheduledItem(this, state, action, this.now());

      if (!queue) {
        queue = new PriorityQueue(4);
        queue.enqueue(si);

        var result = tryCatch(runTrampoline)();
        queue = null;
        if (result === errorObj) { thrower(result.e); }
      } else {
        queue.enqueue(si);
      }
      return si.disposable;
    };

    CurrentThreadScheduler.prototype.scheduleRequired = function () { return !queue; };

    return CurrentThreadScheduler;
  }(Scheduler));

  var currentThreadScheduler = Scheduler.currentThread = new CurrentThreadScheduler();

  var scheduleMethod, clearMethod;

  var localTimer = (function () {
    var localSetTimeout, localClearTimeout = noop;
    if (!!root.setTimeout) {
      localSetTimeout = root.setTimeout;
      localClearTimeout = root.clearTimeout;
    } else if (!!root.WScript) {
      localSetTimeout = function (fn, time) {
        root.WScript.Sleep(time);
        fn();
      };
    } else {
      throw new NotSupportedError();
    }

    return {
      setTimeout: localSetTimeout,
      clearTimeout: localClearTimeout
    };
  }());
  var localSetTimeout = localTimer.setTimeout,
    localClearTimeout = localTimer.clearTimeout;

  (function () {

    var nextHandle = 1, tasksByHandle = {}, currentlyRunning = false;

    clearMethod = function (handle) {
      delete tasksByHandle[handle];
    };

    function runTask(handle) {
      if (currentlyRunning) {
        localSetTimeout(function () { runTask(handle); }, 0);
      } else {
        var task = tasksByHandle[handle];
        if (task) {
          currentlyRunning = true;
          var result = tryCatch(task)();
          clearMethod(handle);
          currentlyRunning = false;
          if (result === errorObj) { thrower(result.e); }
        }
      }
    }

    var reNative = new RegExp('^' +
      String(toString)
        .replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
        .replace(/toString| for [^\]]+/g, '.*?') + '$'
    );

    var setImmediate = typeof (setImmediate = freeGlobal && moduleExports && freeGlobal.setImmediate) == 'function' &&
      !reNative.test(setImmediate) && setImmediate;

    function postMessageSupported () {
      // Ensure not in a worker
      if (!root.postMessage || root.importScripts) { return false; }
      var isAsync = false, oldHandler = root.onmessage;
      // Test for async
      root.onmessage = function () { isAsync = true; };
      root.postMessage('', '*');
      root.onmessage = oldHandler;

      return isAsync;
    }

    // Use in order, setImmediate, nextTick, postMessage, MessageChannel, script readystatechanged, setTimeout
    if (isFunction(setImmediate)) {
      scheduleMethod = function (action) {
        var id = nextHandle++;
        tasksByHandle[id] = action;
        setImmediate(function () { runTask(id); });

        return id;
      };
    } else if (typeof process !== 'undefined' && {}.toString.call(process) === '[object process]') {
      scheduleMethod = function (action) {
        var id = nextHandle++;
        tasksByHandle[id] = action;
        process.nextTick(function () { runTask(id); });

        return id;
      };
    } else if (postMessageSupported()) {
      var MSG_PREFIX = 'ms.rx.schedule' + Math.random();

      var onGlobalPostMessage = function (event) {
        // Only if we're a match to avoid any other global events
        if (typeof event.data === 'string' && event.data.substring(0, MSG_PREFIX.length) === MSG_PREFIX) {
          runTask(event.data.substring(MSG_PREFIX.length));
        }
      };

      root.addEventListener('message', onGlobalPostMessage, false);

      scheduleMethod = function (action) {
        var id = nextHandle++;
        tasksByHandle[id] = action;
        root.postMessage(MSG_PREFIX + id, '*');
        return id;
      };
    } else if (!!root.MessageChannel) {
      var channel = new root.MessageChannel();

      channel.port1.onmessage = function (e) { runTask(e.data); };

      scheduleMethod = function (action) {
        var id = nextHandle++;
        tasksByHandle[id] = action;
        channel.port2.postMessage(id);
        return id;
      };
    } else if ('document' in root && 'onreadystatechange' in root.document.createElement('script')) {

      scheduleMethod = function (action) {
        var scriptElement = root.document.createElement('script');
        var id = nextHandle++;
        tasksByHandle[id] = action;

        scriptElement.onreadystatechange = function () {
          runTask(id);
          scriptElement.onreadystatechange = null;
          scriptElement.parentNode.removeChild(scriptElement);
          scriptElement = null;
        };
        root.document.documentElement.appendChild(scriptElement);
        return id;
      };

    } else {
      scheduleMethod = function (action) {
        var id = nextHandle++;
        tasksByHandle[id] = action;
        localSetTimeout(function () {
          runTask(id);
        }, 0);

        return id;
      };
    }
  }());

  /**
   * Gets a scheduler that schedules work via a timed callback based upon platform.
   */
   var DefaultScheduler = (function (__super__) {
     inherits(DefaultScheduler, __super__);
     function DefaultScheduler() {
       __super__.call(this);
     }

     function scheduleAction(disposable, action, scheduler, state) {
       return function schedule() {
         disposable.setDisposable(Disposable._fixup(action(scheduler, state)));
       };
     }

     function ClearDisposable(id) {
       this._id = id;
       this.isDisposed = false;
     }

     ClearDisposable.prototype.dispose = function () {
       if (!this.isDisposed) {
         this.isDisposed = true;
         clearMethod(this._id);
       }
     };

     function LocalClearDisposable(id) {
       this._id = id;
       this.isDisposed = false;
     }

     LocalClearDisposable.prototype.dispose = function () {
       if (!this.isDisposed) {
         this.isDisposed = true;
         localClearTimeout(this._id);
       }
     };

    DefaultScheduler.prototype.schedule = function (state, action) {
      var disposable = new SingleAssignmentDisposable(),
          id = scheduleMethod(scheduleAction(disposable, action, this, state));
      return new BinaryDisposable(disposable, new ClearDisposable(id));
    };

    DefaultScheduler.prototype._scheduleFuture = function (state, dueTime, action) {
      if (dueTime === 0) { return this.schedule(state, action); }
      var disposable = new SingleAssignmentDisposable(),
          id = localSetTimeout(scheduleAction(disposable, action, this, state), dueTime);
      return new BinaryDisposable(disposable, new LocalClearDisposable(id));
    };

    function scheduleLongRunning(state, action, disposable) {
      return function () { action(state, disposable); };
    }

    DefaultScheduler.prototype.scheduleLongRunning = function (state, action) {
      var disposable = disposableCreate(noop);
      scheduleMethod(scheduleLongRunning(state, action, disposable));
      return disposable;
    };

    return DefaultScheduler;
  }(Scheduler));

  var defaultScheduler = Scheduler['default'] = Scheduler.async = new DefaultScheduler();

  var CatchScheduler = (function (__super__) {
    inherits(CatchScheduler, __super__);

    function CatchScheduler(scheduler, handler) {
      this._scheduler = scheduler;
      this._handler = handler;
      this._recursiveOriginal = null;
      this._recursiveWrapper = null;
      __super__.call(this);
    }

    CatchScheduler.prototype.schedule = function (state, action) {
      return this._scheduler.schedule(state, this._wrap(action));
    };

    CatchScheduler.prototype._scheduleFuture = function (state, dueTime, action) {
      return this._scheduler.schedule(state, dueTime, this._wrap(action));
    };

    CatchScheduler.prototype.now = function () { return this._scheduler.now(); };

    CatchScheduler.prototype._clone = function (scheduler) {
        return new CatchScheduler(scheduler, this._handler);
    };

    CatchScheduler.prototype._wrap = function (action) {
      var parent = this;
      return function (self, state) {
        var res = tryCatch(action)(parent._getRecursiveWrapper(self), state);
        if (res === errorObj) {
          if (!parent._handler(res.e)) { thrower(res.e); }
          return disposableEmpty;
        }
        return disposableFixup(res);
      };
    };

    CatchScheduler.prototype._getRecursiveWrapper = function (scheduler) {
      if (this._recursiveOriginal !== scheduler) {
        this._recursiveOriginal = scheduler;
        var wrapper = this._clone(scheduler);
        wrapper._recursiveOriginal = scheduler;
        wrapper._recursiveWrapper = wrapper;
        this._recursiveWrapper = wrapper;
      }
      return this._recursiveWrapper;
    };

    CatchScheduler.prototype.schedulePeriodic = function (state, period, action) {
      var self = this, failed = false, d = new SingleAssignmentDisposable();

      d.setDisposable(this._scheduler.schedulePeriodic(state, period, function (state1) {
        if (failed) { return null; }
        var res = tryCatch(action)(state1);
        if (res === errorObj) {
          failed = true;
          if (!self._handler(res.e)) { thrower(res.e); }
          d.dispose();
          return null;
        }
        return res;
      }));

      return d;
    };

    return CatchScheduler;
  }(Scheduler));

  /**
   *  Represents a notification to an observer.
   */
  var Notification = Rx.Notification = (function () {
    function Notification() {

    }

    Notification.prototype._accept = function (onNext, onError, onCompleted) {
      throw new NotImplementedError();
    };

    Notification.prototype._acceptObserver = function (onNext, onError, onCompleted) {
      throw new NotImplementedError();
    };

    /**
     * Invokes the delegate corresponding to the notification or the observer's method corresponding to the notification and returns the produced result.
     * @param {Function | Observer} observerOrOnNext Function to invoke for an OnNext notification or Observer to invoke the notification on..
     * @param {Function} onError Function to invoke for an OnError notification.
     * @param {Function} onCompleted Function to invoke for an OnCompleted notification.
     * @returns {Any} Result produced by the observation.
     */
    Notification.prototype.accept = function (observerOrOnNext, onError, onCompleted) {
      return observerOrOnNext && typeof observerOrOnNext === 'object' ?
        this._acceptObserver(observerOrOnNext) :
        this._accept(observerOrOnNext, onError, onCompleted);
    };

    /**
     * Returns an observable sequence with a single notification.
     *
     * @memberOf Notifications
     * @param {Scheduler} [scheduler] Scheduler to send out the notification calls on.
     * @returns {Observable} The observable sequence that surfaces the behavior of the notification upon subscription.
     */
    Notification.prototype.toObservable = function (scheduler) {
      var self = this;
      isScheduler(scheduler) || (scheduler = immediateScheduler);
      return new AnonymousObservable(function (o) {
        return scheduler.schedule(self, function (_, notification) {
          notification._acceptObserver(o);
          notification.kind === 'N' && o.onCompleted();
        });
      });
    };

    return Notification;
  })();

  var OnNextNotification = (function (__super__) {
    inherits(OnNextNotification, __super__);
    function OnNextNotification(value) {
      this.value = value;
      this.kind = 'N';
    }

    OnNextNotification.prototype._accept = function (onNext) {
      return onNext(this.value);
    };

    OnNextNotification.prototype._acceptObserver = function (o) {
      return o.onNext(this.value);
    };

    OnNextNotification.prototype.toString = function () {
      return 'OnNext(' + this.value + ')';
    };

    return OnNextNotification;
  }(Notification));

  var OnErrorNotification = (function (__super__) {
    inherits(OnErrorNotification, __super__);
    function OnErrorNotification(error) {
      this.error = error;
      this.kind = 'E';
    }

    OnErrorNotification.prototype._accept = function (onNext, onError) {
      return onError(this.error);
    };

    OnErrorNotification.prototype._acceptObserver = function (o) {
      return o.onError(this.error);
    };

    OnErrorNotification.prototype.toString = function () {
      return 'OnError(' + this.error + ')';
    };

    return OnErrorNotification;
  }(Notification));

  var OnCompletedNotification = (function (__super__) {
    inherits(OnCompletedNotification, __super__);
    function OnCompletedNotification() {
      this.kind = 'C';
    }

    OnCompletedNotification.prototype._accept = function (onNext, onError, onCompleted) {
      return onCompleted();
    };

    OnCompletedNotification.prototype._acceptObserver = function (o) {
      return o.onCompleted();
    };

    OnCompletedNotification.prototype.toString = function () {
      return 'OnCompleted()';
    };

    return OnCompletedNotification;
  }(Notification));

  /**
   * Creates an object that represents an OnNext notification to an observer.
   * @param {Any} value The value contained in the notification.
   * @returns {Notification} The OnNext notification containing the value.
   */
  var notificationCreateOnNext = Notification.createOnNext = function (value) {
    return new OnNextNotification(value);
  };

  /**
   * Creates an object that represents an OnError notification to an observer.
   * @param {Any} error The exception contained in the notification.
   * @returns {Notification} The OnError notification containing the exception.
   */
  var notificationCreateOnError = Notification.createOnError = function (error) {
    return new OnErrorNotification(error);
  };

  /**
   * Creates an object that represents an OnCompleted notification to an observer.
   * @returns {Notification} The OnCompleted notification.
   */
  var notificationCreateOnCompleted = Notification.createOnCompleted = function () {
    return new OnCompletedNotification();
  };

  /**
   * Supports push-style iteration over an observable sequence.
   */
  var Observer = Rx.Observer = function () { };

  /**
   *  Creates a notification callback from an observer.
   * @returns The action that forwards its input notification to the underlying observer.
   */
  Observer.prototype.toNotifier = function () {
    var observer = this;
    return function (n) { return n.accept(observer); };
  };

  /**
   *  Hides the identity of an observer.
   * @returns An observer that hides the identity of the specified observer.
   */
  Observer.prototype.asObserver = function () {
    var self = this;
    return new AnonymousObserver(
      function (x) { self.onNext(x); },
      function (err) { self.onError(err); },
      function () { self.onCompleted(); });
  };

  /**
   *  Checks access to the observer for grammar violations. This includes checking for multiple OnError or OnCompleted calls, as well as reentrancy in any of the observer methods.
   *  If a violation is detected, an Error is thrown from the offending observer method call.
   * @returns An observer that checks callbacks invocations against the observer grammar and, if the checks pass, forwards those to the specified observer.
   */
  Observer.prototype.checked = function () { return new CheckedObserver(this); };

  /**
   *  Creates an observer from the specified OnNext, along with optional OnError, and OnCompleted actions.
   * @param {Function} [onNext] Observer's OnNext action implementation.
   * @param {Function} [onError] Observer's OnError action implementation.
   * @param {Function} [onCompleted] Observer's OnCompleted action implementation.
   * @returns {Observer} The observer object implemented using the given actions.
   */
  var observerCreate = Observer.create = function (onNext, onError, onCompleted) {
    onNext || (onNext = noop);
    onError || (onError = defaultError);
    onCompleted || (onCompleted = noop);
    return new AnonymousObserver(onNext, onError, onCompleted);
  };

  /**
   *  Creates an observer from a notification callback.
   * @param {Function} handler Action that handles a notification.
   * @returns The observer object that invokes the specified handler using a notification corresponding to each message it receives.
   */
  Observer.fromNotifier = function (handler, thisArg) {
    var cb = bindCallback(handler, thisArg, 1);
    return new AnonymousObserver(function (x) {
      return cb(notificationCreateOnNext(x));
    }, function (e) {
      return cb(notificationCreateOnError(e));
    }, function () {
      return cb(notificationCreateOnCompleted());
    });
  };

  /**
   * Schedules the invocation of observer methods on the given scheduler.
   * @param {Scheduler} scheduler Scheduler to schedule observer messages on.
   * @returns {Observer} Observer whose messages are scheduled on the given scheduler.
   */
  Observer.prototype.notifyOn = function (scheduler) {
    return new ObserveOnObserver(scheduler, this);
  };

  Observer.prototype.makeSafe = function(disposable) {
    return new AnonymousSafeObserver(this._onNext, this._onError, this._onCompleted, disposable);
  };

  /**
   * Abstract base class for implementations of the Observer class.
   * This base class enforces the grammar of observers where OnError and OnCompleted are terminal messages.
   */
  var AbstractObserver = Rx.internals.AbstractObserver = (function (__super__) {
    inherits(AbstractObserver, __super__);

    /**
     * Creates a new observer in a non-stopped state.
     */
    function AbstractObserver() {
      this.isStopped = false;
    }

    // Must be implemented by other observers
    AbstractObserver.prototype.next = notImplemented;
    AbstractObserver.prototype.error = notImplemented;
    AbstractObserver.prototype.completed = notImplemented;

    /**
     * Notifies the observer of a new element in the sequence.
     * @param {Any} value Next element in the sequence.
     */
    AbstractObserver.prototype.onNext = function (value) {
      !this.isStopped && this.next(value);
    };

    /**
     * Notifies the observer that an exception has occurred.
     * @param {Any} error The error that has occurred.
     */
    AbstractObserver.prototype.onError = function (error) {
      if (!this.isStopped) {
        this.isStopped = true;
        this.error(error);
      }
    };

    /**
     * Notifies the observer of the end of the sequence.
     */
    AbstractObserver.prototype.onCompleted = function () {
      if (!this.isStopped) {
        this.isStopped = true;
        this.completed();
      }
    };

    /**
     * Disposes the observer, causing it to transition to the stopped state.
     */
    AbstractObserver.prototype.dispose = function () { this.isStopped = true; };

    AbstractObserver.prototype.fail = function (e) {
      if (!this.isStopped) {
        this.isStopped = true;
        this.error(e);
        return true;
      }

      return false;
    };

    return AbstractObserver;
  }(Observer));

  /**
   * Class to create an Observer instance from delegate-based implementations of the on* methods.
   */
  var AnonymousObserver = Rx.AnonymousObserver = (function (__super__) {
    inherits(AnonymousObserver, __super__);

    /**
     * Creates an observer from the specified OnNext, OnError, and OnCompleted actions.
     * @param {Any} onNext Observer's OnNext action implementation.
     * @param {Any} onError Observer's OnError action implementation.
     * @param {Any} onCompleted Observer's OnCompleted action implementation.
     */
    function AnonymousObserver(onNext, onError, onCompleted) {
      __super__.call(this);
      this._onNext = onNext;
      this._onError = onError;
      this._onCompleted = onCompleted;
    }

    /**
     * Calls the onNext action.
     * @param {Any} value Next element in the sequence.
     */
    AnonymousObserver.prototype.next = function (value) {
      this._onNext(value);
    };

    /**
     * Calls the onError action.
     * @param {Any} error The error that has occurred.
     */
    AnonymousObserver.prototype.error = function (error) {
      this._onError(error);
    };

    /**
     *  Calls the onCompleted action.
     */
    AnonymousObserver.prototype.completed = function () {
      this._onCompleted();
    };

    return AnonymousObserver;
  }(AbstractObserver));

  var CheckedObserver = (function (__super__) {
    inherits(CheckedObserver, __super__);

    function CheckedObserver(observer) {
      __super__.call(this);
      this._observer = observer;
      this._state = 0; // 0 - idle, 1 - busy, 2 - done
    }

    var CheckedObserverPrototype = CheckedObserver.prototype;

    CheckedObserverPrototype.onNext = function (value) {
      this.checkAccess();
      var res = tryCatch(this._observer.onNext).call(this._observer, value);
      this._state = 0;
      res === errorObj && thrower(res.e);
    };

    CheckedObserverPrototype.onError = function (err) {
      this.checkAccess();
      var res = tryCatch(this._observer.onError).call(this._observer, err);
      this._state = 2;
      res === errorObj && thrower(res.e);
    };

    CheckedObserverPrototype.onCompleted = function () {
      this.checkAccess();
      var res = tryCatch(this._observer.onCompleted).call(this._observer);
      this._state = 2;
      res === errorObj && thrower(res.e);
    };

    CheckedObserverPrototype.checkAccess = function () {
      if (this._state === 1) { throw new Error('Re-entrancy detected'); }
      if (this._state === 2) { throw new Error('Observer completed'); }
      if (this._state === 0) { this._state = 1; }
    };

    return CheckedObserver;
  }(Observer));

  var ScheduledObserver = Rx.internals.ScheduledObserver = (function (__super__) {
    inherits(ScheduledObserver, __super__);

    function ScheduledObserver(scheduler, observer) {
      __super__.call(this);
      this.scheduler = scheduler;
      this.observer = observer;
      this.isAcquired = false;
      this.hasFaulted = false;
      this.queue = [];
      this.disposable = new SerialDisposable();
    }

    function enqueueNext(observer, x) { return function () { observer.onNext(x); }; }
    function enqueueError(observer, e) { return function () { observer.onError(e); }; }
    function enqueueCompleted(observer) { return function () { observer.onCompleted(); }; }

    ScheduledObserver.prototype.next = function (x) {
      this.queue.push(enqueueNext(this.observer, x));
    };

    ScheduledObserver.prototype.error = function (e) {
      this.queue.push(enqueueError(this.observer, e));
    };

    ScheduledObserver.prototype.completed = function () {
      this.queue.push(enqueueCompleted(this.observer));
    };


    function scheduleMethod(state, recurse) {
      var work;
      if (state.queue.length > 0) {
        work = state.queue.shift();
      } else {
        state.isAcquired = false;
        return;
      }
      var res = tryCatch(work)();
      if (res === errorObj) {
        state.queue = [];
        state.hasFaulted = true;
        return thrower(res.e);
      }
      recurse(state);
    }

    ScheduledObserver.prototype.ensureActive = function () {
      var isOwner = false;
      if (!this.hasFaulted && this.queue.length > 0) {
        isOwner = !this.isAcquired;
        this.isAcquired = true;
      }
      isOwner &&
        this.disposable.setDisposable(this.scheduler.scheduleRecursive(this, scheduleMethod));
    };

    ScheduledObserver.prototype.dispose = function () {
      __super__.prototype.dispose.call(this);
      this.disposable.dispose();
    };

    return ScheduledObserver;
  }(AbstractObserver));

  var ObserveOnObserver = (function (__super__) {
    inherits(ObserveOnObserver, __super__);

    function ObserveOnObserver(scheduler, observer, cancel) {
      __super__.call(this, scheduler, observer);
      this._cancel = cancel;
    }

    ObserveOnObserver.prototype.next = function (value) {
      __super__.prototype.next.call(this, value);
      this.ensureActive();
    };

    ObserveOnObserver.prototype.error = function (e) {
      __super__.prototype.error.call(this, e);
      this.ensureActive();
    };

    ObserveOnObserver.prototype.completed = function () {
      __super__.prototype.completed.call(this);
      this.ensureActive();
    };

    ObserveOnObserver.prototype.dispose = function () {
      __super__.prototype.dispose.call(this);
      this._cancel && this._cancel.dispose();
      this._cancel = null;
    };

    return ObserveOnObserver;
  })(ScheduledObserver);

  var observableProto;

  /**
   * Represents a push-style collection.
   */
  var Observable = Rx.Observable = (function () {

    function makeSubscribe(self, subscribe) {
      return function (o) {
        var oldOnError = o.onError;
        o.onError = function (e) {
          makeStackTraceLong(e, self);
          oldOnError.call(o, e);
        };

        return subscribe.call(self, o);
      };
    }

    function Observable() {
      if (Rx.config.longStackSupport && hasStacks) {
        var oldSubscribe = this._subscribe;
        var e = tryCatch(thrower)(new Error()).e;
        this.stack = e.stack.substring(e.stack.indexOf('\n') + 1);
        this._subscribe = makeSubscribe(this, oldSubscribe);
      }
    }

    observableProto = Observable.prototype;

    /**
    * Determines whether the given object is an Observable
    * @param {Any} An object to determine whether it is an Observable
    * @returns {Boolean} true if an Observable, else false.
    */
    Observable.isObservable = function (o) {
      return o && isFunction(o.subscribe);
    };

    /**
     *  Subscribes an o to the observable sequence.
     *  @param {Mixed} [oOrOnNext] The object that is to receive notifications or an action to invoke for each element in the observable sequence.
     *  @param {Function} [onError] Action to invoke upon exceptional termination of the observable sequence.
     *  @param {Function} [onCompleted] Action to invoke upon graceful termination of the observable sequence.
     *  @returns {Diposable} A disposable handling the subscriptions and unsubscriptions.
     */
    observableProto.subscribe = observableProto.forEach = function (oOrOnNext, onError, onCompleted) {
      return this._subscribe(typeof oOrOnNext === 'object' ?
        oOrOnNext :
        observerCreate(oOrOnNext, onError, onCompleted));
    };

    /**
     * Subscribes to the next value in the sequence with an optional "this" argument.
     * @param {Function} onNext The function to invoke on each element in the observable sequence.
     * @param {Any} [thisArg] Object to use as this when executing callback.
     * @returns {Disposable} A disposable handling the subscriptions and unsubscriptions.
     */
    observableProto.subscribeOnNext = function (onNext, thisArg) {
      return this._subscribe(observerCreate(typeof thisArg !== 'undefined' ? function(x) { onNext.call(thisArg, x); } : onNext));
    };

    /**
     * Subscribes to an exceptional condition in the sequence with an optional "this" argument.
     * @param {Function} onError The function to invoke upon exceptional termination of the observable sequence.
     * @param {Any} [thisArg] Object to use as this when executing callback.
     * @returns {Disposable} A disposable handling the subscriptions and unsubscriptions.
     */
    observableProto.subscribeOnError = function (onError, thisArg) {
      return this._subscribe(observerCreate(null, typeof thisArg !== 'undefined' ? function(e) { onError.call(thisArg, e); } : onError));
    };

    /**
     * Subscribes to the next value in the sequence with an optional "this" argument.
     * @param {Function} onCompleted The function to invoke upon graceful termination of the observable sequence.
     * @param {Any} [thisArg] Object to use as this when executing callback.
     * @returns {Disposable} A disposable handling the subscriptions and unsubscriptions.
     */
    observableProto.subscribeOnCompleted = function (onCompleted, thisArg) {
      return this._subscribe(observerCreate(null, null, typeof thisArg !== 'undefined' ? function() { onCompleted.call(thisArg); } : onCompleted));
    };

    return Observable;
  })();

  var ObservableBase = Rx.ObservableBase = (function (__super__) {
    inherits(ObservableBase, __super__);

    function fixSubscriber(subscriber) {
      return subscriber && isFunction(subscriber.dispose) ? subscriber :
        isFunction(subscriber) ? disposableCreate(subscriber) : disposableEmpty;
    }

    function setDisposable(s, state) {
      var ado = state[0], self = state[1];
      var sub = tryCatch(self.subscribeCore).call(self, ado);
      if (sub === errorObj && !ado.fail(errorObj.e)) { thrower(errorObj.e); }
      ado.setDisposable(fixSubscriber(sub));
    }

    function ObservableBase() {
      __super__.call(this);
    }

    ObservableBase.prototype._subscribe = function (o) {
      var ado = new AutoDetachObserver(o), state = [ado, this];

      if (currentThreadScheduler.scheduleRequired()) {
        currentThreadScheduler.schedule(state, setDisposable);
      } else {
        setDisposable(null, state);
      }
      return ado;
    };

    ObservableBase.prototype.subscribeCore = notImplemented;

    return ObservableBase;
  }(Observable));

var FlatMapObservable = Rx.FlatMapObservable = (function(__super__) {

    inherits(FlatMapObservable, __super__);

    function FlatMapObservable(source, selector, resultSelector, thisArg) {
      this.resultSelector = isFunction(resultSelector) ? resultSelector : null;
      this.selector = bindCallback(isFunction(selector) ? selector : function() { return selector; }, thisArg, 3);
      this.source = source;
      __super__.call(this);
    }

    FlatMapObservable.prototype.subscribeCore = function(o) {
      return this.source.subscribe(new InnerObserver(o, this.selector, this.resultSelector, this));
    };

    inherits(InnerObserver, AbstractObserver);
    function InnerObserver(observer, selector, resultSelector, source) {
      this.i = 0;
      this.selector = selector;
      this.resultSelector = resultSelector;
      this.source = source;
      this.o = observer;
      AbstractObserver.call(this);
    }

    InnerObserver.prototype._wrapResult = function(result, x, i) {
      return this.resultSelector ?
        result.map(function(y, i2) { return this.resultSelector(x, y, i, i2); }, this) :
        result;
    };

    InnerObserver.prototype.next = function(x) {
      var i = this.i++;
      var result = tryCatch(this.selector)(x, i, this.source);
      if (result === errorObj) { return this.o.onError(result.e); }

      isPromise(result) && (result = observableFromPromise(result));
      (isArrayLike(result) || isIterable(result)) && (result = Observable.from(result));
      this.o.onNext(this._wrapResult(result, x, i));
    };

    InnerObserver.prototype.error = function(e) { this.o.onError(e); };

    InnerObserver.prototype.completed = function() { this.o.onCompleted(); };

    return FlatMapObservable;

}(ObservableBase));

  var Enumerable = Rx.internals.Enumerable = function () { };

  function IsDisposedDisposable(state) {
    this._s = state;
    this.isDisposed = false;
  }

  IsDisposedDisposable.prototype.dispose = function () {
    if (!this.isDisposed) {
      this.isDisposed = true;
      this._s.isDisposed = true;
    }
  };

  var ConcatEnumerableObservable = (function(__super__) {
    inherits(ConcatEnumerableObservable, __super__);
    function ConcatEnumerableObservable(sources) {
      this.sources = sources;
      __super__.call(this);
    }

    function scheduleMethod(state, recurse) {
      if (state.isDisposed) { return; }
      var currentItem = tryCatch(state.e.next).call(state.e);
      if (currentItem === errorObj) { return state.o.onError(currentItem.e); }
      if (currentItem.done) { return state.o.onCompleted(); }

      // Check if promise
      var currentValue = currentItem.value;
      isPromise(currentValue) && (currentValue = observableFromPromise(currentValue));

      var d = new SingleAssignmentDisposable();
      state.subscription.setDisposable(d);
      d.setDisposable(currentValue.subscribe(new InnerObserver(state, recurse)));
    }

    ConcatEnumerableObservable.prototype.subscribeCore = function (o) {
      var subscription = new SerialDisposable();
      var state = {
        isDisposed: false,
        o: o,
        subscription: subscription,
        e: this.sources[$iterator$]()
      };

      var cancelable = currentThreadScheduler.scheduleRecursive(state, scheduleMethod);
      return new NAryDisposable([subscription, cancelable, new IsDisposedDisposable(state)]);
    };

    function InnerObserver(state, recurse) {
      this._state = state;
      this._recurse = recurse;
      AbstractObserver.call(this);
    }

    inherits(InnerObserver, AbstractObserver);

    InnerObserver.prototype.next = function (x) { this._state.o.onNext(x); };
    InnerObserver.prototype.error = function (e) { this._state.o.onError(e); };
    InnerObserver.prototype.completed = function () { this._recurse(this._state); };

    return ConcatEnumerableObservable;
  }(ObservableBase));

  Enumerable.prototype.concat = function () {
    return new ConcatEnumerableObservable(this);
  };

  var CatchErrorObservable = (function(__super__) {
    function CatchErrorObservable(sources) {
      this.sources = sources;
      __super__.call(this);
    }

    inherits(CatchErrorObservable, __super__);

    function scheduleMethod(state, recurse) {
      if (state.isDisposed) { return; }
      var currentItem = tryCatch(state.e.next).call(state.e);
      if (currentItem === errorObj) { return state.o.onError(currentItem.e); }
      if (currentItem.done) { return state.lastError !== null ? state.o.onError(state.lastError) : state.o.onCompleted(); }

      var currentValue = currentItem.value;
      isPromise(currentValue) && (currentValue = observableFromPromise(currentValue));

      var d = new SingleAssignmentDisposable();
      state.subscription.setDisposable(d);
      d.setDisposable(currentValue.subscribe(new InnerObserver(state, recurse)));
    }

    CatchErrorObservable.prototype.subscribeCore = function (o) {
      var subscription = new SerialDisposable();
      var state = {
        isDisposed: false,
        e: this.sources[$iterator$](),
        subscription: subscription,
        lastError: null,
        o: o
      };

      var cancelable = currentThreadScheduler.scheduleRecursive(state, scheduleMethod);
      return new NAryDisposable([subscription, cancelable, new IsDisposedDisposable(state)]);
    };

    function InnerObserver(state, recurse) {
      this._state = state;
      this._recurse = recurse;
      AbstractObserver.call(this);
    }

    inherits(InnerObserver, AbstractObserver);

    InnerObserver.prototype.next = function (x) { this._state.o.onNext(x); };
    InnerObserver.prototype.error = function (e) { this._state.lastError = e; this._recurse(this._state); };
    InnerObserver.prototype.completed = function () { this._state.o.onCompleted(); };

    return CatchErrorObservable;
  }(ObservableBase));

  Enumerable.prototype.catchError = function () {
    return new CatchErrorObservable(this);
  };

  var RepeatEnumerable = (function (__super__) {
    inherits(RepeatEnumerable, __super__);
    function RepeatEnumerable(v, c) {
      this.v = v;
      this.c = c == null ? -1 : c;
    }

    RepeatEnumerable.prototype[$iterator$] = function () {
      return new RepeatEnumerator(this);
    };

    function RepeatEnumerator(p) {
      this.v = p.v;
      this.l = p.c;
    }

    RepeatEnumerator.prototype.next = function () {
      if (this.l === 0) { return doneEnumerator; }
      if (this.l > 0) { this.l--; }
      return { done: false, value: this.v };
    };

    return RepeatEnumerable;
  }(Enumerable));

  var enumerableRepeat = Enumerable.repeat = function (value, repeatCount) {
    return new RepeatEnumerable(value, repeatCount);
  };

  var OfEnumerable = (function(__super__) {
    inherits(OfEnumerable, __super__);
    function OfEnumerable(s, fn, thisArg) {
      this.s = s;
      this.fn = fn ? bindCallback(fn, thisArg, 3) : null;
    }
    OfEnumerable.prototype[$iterator$] = function () {
      return new OfEnumerator(this);
    };

    function OfEnumerator(p) {
      this.i = -1;
      this.s = p.s;
      this.l = this.s.length;
      this.fn = p.fn;
    }

    OfEnumerator.prototype.next = function () {
     return ++this.i < this.l ?
       { done: false, value: !this.fn ? this.s[this.i] : this.fn(this.s[this.i], this.i, this.s) } :
       doneEnumerator;
    };

    return OfEnumerable;
  }(Enumerable));

  var enumerableOf = Enumerable.of = function (source, selector, thisArg) {
    return new OfEnumerable(source, selector, thisArg);
  };

var ObserveOnObservable = (function (__super__) {
  inherits(ObserveOnObservable, __super__);
  function ObserveOnObservable(source, s) {
    this.source = source;
    this._s = s;
    __super__.call(this);
  }

  ObserveOnObservable.prototype.subscribeCore = function (o) {
    return this.source.subscribe(new ObserveOnObserver(this._s, o));
  };

  return ObserveOnObservable;
}(ObservableBase));

   /**
   *  Wraps the source sequence in order to run its observer callbacks on the specified scheduler.
   *
   *  This only invokes observer callbacks on a scheduler. In case the subscription and/or unsubscription actions have side-effects
   *  that require to be run on a scheduler, use subscribeOn.
   *
   *  @param {Scheduler} scheduler Scheduler to notify observers on.
   *  @returns {Observable} The source sequence whose observations happen on the specified scheduler.
   */
  observableProto.observeOn = function (scheduler) {
    return new ObserveOnObservable(this, scheduler);
  };

  var SubscribeOnObservable = (function (__super__) {
    inherits(SubscribeOnObservable, __super__);
    function SubscribeOnObservable(source, s) {
      this.source = source;
      this._s = s;
      __super__.call(this);
    }

    function scheduleMethod(scheduler, state) {
      var source = state[0], d = state[1], o = state[2];
      d.setDisposable(new ScheduledDisposable(scheduler, source.subscribe(o)));
    }

    SubscribeOnObservable.prototype.subscribeCore = function (o) {
      var m = new SingleAssignmentDisposable(), d = new SerialDisposable();
      d.setDisposable(m);
      m.setDisposable(this._s.schedule([this.source, d, o], scheduleMethod));
      return d;
    };

    return SubscribeOnObservable;
  }(ObservableBase));

   /**
   *  Wraps the source sequence in order to run its subscription and unsubscription logic on the specified scheduler. This operation is not commonly used;
   *  see the remarks section for more information on the distinction between subscribeOn and observeOn.

   *  This only performs the side-effects of subscription and unsubscription on the specified scheduler. In order to invoke observer
   *  callbacks on a scheduler, use observeOn.

   *  @param {Scheduler} scheduler Scheduler to perform subscription and unsubscription actions on.
   *  @returns {Observable} The source sequence whose subscriptions and unsubscriptions happen on the specified scheduler.
   */
  observableProto.subscribeOn = function (scheduler) {
    return new SubscribeOnObservable(this, scheduler);
  };

  var FromPromiseObservable = (function(__super__) {
    inherits(FromPromiseObservable, __super__);
    function FromPromiseObservable(p, s) {
      this._p = p;
      this._s = s;
      __super__.call(this);
    }

    function scheduleNext(s, state) {
      var o = state[0], data = state[1];
      o.onNext(data);
      o.onCompleted();
    }

    function scheduleError(s, state) {
      var o = state[0], err = state[1];
      o.onError(err);
    }

    FromPromiseObservable.prototype.subscribeCore = function(o) {
      var sad = new SingleAssignmentDisposable(), self = this, p = this._p;

      if (isFunction(p)) {
        p = tryCatch(p)();
        if (p === errorObj) {
          o.onError(p.e);
          return sad;
        }
      }

      p
        .then(function (data) {
          sad.setDisposable(self._s.schedule([o, data], scheduleNext));
        }, function (err) {
          sad.setDisposable(self._s.schedule([o, err], scheduleError));
        });

      return sad;
    };

    return FromPromiseObservable;
  }(ObservableBase));

  /**
  * Converts a Promise to an Observable sequence
  * @param {Promise} An ES6 Compliant promise.
  * @returns {Observable} An Observable sequence which wraps the existing promise success and failure.
  */
  var observableFromPromise = Observable.fromPromise = function (promise, scheduler) {
    scheduler || (scheduler = defaultScheduler);
    return new FromPromiseObservable(promise, scheduler);
  };

  /*
   * Converts an existing observable sequence to an ES6 Compatible Promise
   * @example
   * var promise = Rx.Observable.return(42).toPromise(RSVP.Promise);
   *
   * // With config
   * Rx.config.Promise = RSVP.Promise;
   * var promise = Rx.Observable.return(42).toPromise();
   * @param {Function} [promiseCtor] The constructor of the promise. If not provided, it looks for it in Rx.config.Promise.
   * @returns {Promise} An ES6 compatible promise with the last value from the observable sequence.
   */
  observableProto.toPromise = function (promiseCtor) {
    promiseCtor || (promiseCtor = Rx.config.Promise);
    if (!promiseCtor) { throw new NotSupportedError('Promise type not provided nor in Rx.config.Promise'); }
    var source = this;
    return new promiseCtor(function (resolve, reject) {
      // No cancellation can be done
      var value;
      source.subscribe(function (v) {
        value = v;
      }, reject, function () {
        resolve(value);
      });
    });
  };

  var ToArrayObservable = (function(__super__) {
    inherits(ToArrayObservable, __super__);
    function ToArrayObservable(source) {
      this.source = source;
      __super__.call(this);
    }

    ToArrayObservable.prototype.subscribeCore = function(o) {
      return this.source.subscribe(new InnerObserver(o));
    };

    inherits(InnerObserver, AbstractObserver);
    function InnerObserver(o) {
      this.o = o;
      this.a = [];
      AbstractObserver.call(this);
    }
    
    InnerObserver.prototype.next = function (x) { this.a.push(x); };
    InnerObserver.prototype.error = function (e) { this.o.onError(e);  };
    InnerObserver.prototype.completed = function () { this.o.onNext(this.a); this.o.onCompleted(); };

    return ToArrayObservable;
  }(ObservableBase));

  /**
  * Creates an array from an observable sequence.
  * @returns {Observable} An observable sequence containing a single element with a list containing all the elements of the source sequence.
  */
  observableProto.toArray = function () {
    return new ToArrayObservable(this);
  };

  /**
   *  Creates an observable sequence from a specified subscribe method implementation.
   * @example
   *  var res = Rx.Observable.create(function (observer) { return function () { } );
   *  var res = Rx.Observable.create(function (observer) { return Rx.Disposable.empty; } );
   *  var res = Rx.Observable.create(function (observer) { } );
   * @param {Function} subscribe Implementation of the resulting observable sequence's subscribe method, returning a function that will be wrapped in a Disposable.
   * @returns {Observable} The observable sequence with the specified implementation for the Subscribe method.
   */
  Observable.create = function (subscribe, parent) {
    return new AnonymousObservable(subscribe, parent);
  };

  var Defer = (function(__super__) {
    inherits(Defer, __super__);
    function Defer(factory) {
      this._f = factory;
      __super__.call(this);
    }

    Defer.prototype.subscribeCore = function (o) {
      var result = tryCatch(this._f)();
      if (result === errorObj) { return observableThrow(result.e).subscribe(o);}
      isPromise(result) && (result = observableFromPromise(result));
      return result.subscribe(o);
    };

    return Defer;
  }(ObservableBase));

  /**
   *  Returns an observable sequence that invokes the specified factory function whenever a new observer subscribes.
   *
   * @example
   *  var res = Rx.Observable.defer(function () { return Rx.Observable.fromArray([1,2,3]); });
   * @param {Function} observableFactory Observable factory function to invoke for each observer that subscribes to the resulting sequence or Promise.
   * @returns {Observable} An observable sequence whose observers trigger an invocation of the given observable factory function.
   */
  var observableDefer = Observable.defer = function (observableFactory) {
    return new Defer(observableFactory);
  };

  var EmptyObservable = (function(__super__) {
    inherits(EmptyObservable, __super__);
    function EmptyObservable(scheduler) {
      this.scheduler = scheduler;
      __super__.call(this);
    }

    EmptyObservable.prototype.subscribeCore = function (observer) {
      var sink = new EmptySink(observer, this.scheduler);
      return sink.run();
    };

    function EmptySink(observer, scheduler) {
      this.observer = observer;
      this.scheduler = scheduler;
    }

    function scheduleItem(s, state) {
      state.onCompleted();
      return disposableEmpty;
    }

    EmptySink.prototype.run = function () {
      var state = this.observer;
      return this.scheduler === immediateScheduler ?
        scheduleItem(null, state) :
        this.scheduler.schedule(state, scheduleItem);
    };

    return EmptyObservable;
  }(ObservableBase));

  var EMPTY_OBSERVABLE = new EmptyObservable(immediateScheduler);

  /**
   *  Returns an empty observable sequence, using the specified scheduler to send out the single OnCompleted message.
   *
   * @example
   *  var res = Rx.Observable.empty();
   *  var res = Rx.Observable.empty(Rx.Scheduler.timeout);
   * @param {Scheduler} [scheduler] Scheduler to send the termination call on.
   * @returns {Observable} An observable sequence with no elements.
   */
  var observableEmpty = Observable.empty = function (scheduler) {
    isScheduler(scheduler) || (scheduler = immediateScheduler);
    return scheduler === immediateScheduler ? EMPTY_OBSERVABLE : new EmptyObservable(scheduler);
  };

  var FromObservable = (function(__super__) {
    inherits(FromObservable, __super__);
    function FromObservable(iterable, fn, scheduler) {
      this._iterable = iterable;
      this._fn = fn;
      this._scheduler = scheduler;
      __super__.call(this);
    }

    function createScheduleMethod(o, it, fn) {
      return function loopRecursive(i, recurse) {
        var next = tryCatch(it.next).call(it);
        if (next === errorObj) { return o.onError(next.e); }
        if (next.done) { return o.onCompleted(); }

        var result = next.value;

        if (isFunction(fn)) {
          result = tryCatch(fn)(result, i);
          if (result === errorObj) { return o.onError(result.e); }
        }

        o.onNext(result);
        recurse(i + 1);
      };
    }

    FromObservable.prototype.subscribeCore = function (o) {
      var list = Object(this._iterable),
          it = getIterable(list);

      return this._scheduler.scheduleRecursive(0, createScheduleMethod(o, it, this._fn));
    };

    return FromObservable;
  }(ObservableBase));

  var maxSafeInteger = Math.pow(2, 53) - 1;

  function StringIterable(s) {
    this._s = s;
  }

  StringIterable.prototype[$iterator$] = function () {
    return new StringIterator(this._s);
  };

  function StringIterator(s) {
    this._s = s;
    this._l = s.length;
    this._i = 0;
  }

  StringIterator.prototype[$iterator$] = function () {
    return this;
  };

  StringIterator.prototype.next = function () {
    return this._i < this._l ? { done: false, value: this._s.charAt(this._i++) } : doneEnumerator;
  };

  function ArrayIterable(a) {
    this._a = a;
  }

  ArrayIterable.prototype[$iterator$] = function () {
    return new ArrayIterator(this._a);
  };

  function ArrayIterator(a) {
    this._a = a;
    this._l = toLength(a);
    this._i = 0;
  }

  ArrayIterator.prototype[$iterator$] = function () {
    return this;
  };

  ArrayIterator.prototype.next = function () {
    return this._i < this._l ? { done: false, value: this._a[this._i++] } : doneEnumerator;
  };

  function numberIsFinite(value) {
    return typeof value === 'number' && root.isFinite(value);
  }

  function isNan(n) {
    return n !== n;
  }

  function getIterable(o) {
    var i = o[$iterator$], it;
    if (!i && typeof o === 'string') {
      it = new StringIterable(o);
      return it[$iterator$]();
    }
    if (!i && o.length !== undefined) {
      it = new ArrayIterable(o);
      return it[$iterator$]();
    }
    if (!i) { throw new TypeError('Object is not iterable'); }
    return o[$iterator$]();
  }

  function sign(value) {
    var number = +value;
    if (number === 0) { return number; }
    if (isNaN(number)) { return number; }
    return number < 0 ? -1 : 1;
  }

  function toLength(o) {
    var len = +o.length;
    if (isNaN(len)) { return 0; }
    if (len === 0 || !numberIsFinite(len)) { return len; }
    len = sign(len) * Math.floor(Math.abs(len));
    if (len <= 0) { return 0; }
    if (len > maxSafeInteger) { return maxSafeInteger; }
    return len;
  }

  /**
  * This method creates a new Observable sequence from an array-like or iterable object.
  * @param {Any} arrayLike An array-like or iterable object to convert to an Observable sequence.
  * @param {Function} [mapFn] Map function to call on every element of the array.
  * @param {Any} [thisArg] The context to use calling the mapFn if provided.
  * @param {Scheduler} [scheduler] Optional scheduler to use for scheduling.  If not provided, defaults to Scheduler.currentThread.
  */
  var observableFrom = Observable.from = function (iterable, mapFn, thisArg, scheduler) {
    if (iterable == null) {
      throw new Error('iterable cannot be null.')
    }
    if (mapFn && !isFunction(mapFn)) {
      throw new Error('mapFn when provided must be a function');
    }
    if (mapFn) {
      var mapper = bindCallback(mapFn, thisArg, 2);
    }
    isScheduler(scheduler) || (scheduler = currentThreadScheduler);
    return new FromObservable(iterable, mapper, scheduler);
  }

  var FromArrayObservable = (function(__super__) {
    inherits(FromArrayObservable, __super__);
    function FromArrayObservable(args, scheduler) {
      this._args = args;
      this._scheduler = scheduler;
      __super__.call(this);
    }

    function scheduleMethod(o, args) {
      var len = args.length;
      return function loopRecursive (i, recurse) {
        if (i < len) {
          o.onNext(args[i]);
          recurse(i + 1);
        } else {
          o.onCompleted();
        }
      };
    }

    FromArrayObservable.prototype.subscribeCore = function (o) {
      return this._scheduler.scheduleRecursive(0, scheduleMethod(o, this._args));
    };

    return FromArrayObservable;
  }(ObservableBase));

  /**
  *  Converts an array to an observable sequence, using an optional scheduler to enumerate the array.
  * @deprecated use Observable.from or Observable.of
  * @param {Scheduler} [scheduler] Scheduler to run the enumeration of the input sequence on.
  * @returns {Observable} The observable sequence whose elements are pulled from the given enumerable sequence.
  */
  var observableFromArray = Observable.fromArray = function (array, scheduler) {
    isScheduler(scheduler) || (scheduler = currentThreadScheduler);
    return new FromArrayObservable(array, scheduler)
  };

  var GenerateObservable = (function (__super__) {
    inherits(GenerateObservable, __super__);
    function GenerateObservable(state, cndFn, itrFn, resFn, s) {
      this._initialState = state;
      this._cndFn = cndFn;
      this._itrFn = itrFn;
      this._resFn = resFn;
      this._s = s;
      __super__.call(this);
    }

    function scheduleRecursive(state, recurse) {
      if (state.first) {
        state.first = false;
      } else {
        state.newState = tryCatch(state.self._itrFn)(state.newState);
        if (state.newState === errorObj) { return state.o.onError(state.newState.e); }
      }
      var hasResult = tryCatch(state.self._cndFn)(state.newState);
      if (hasResult === errorObj) { return state.o.onError(hasResult.e); }
      if (hasResult) {
        var result = tryCatch(state.self._resFn)(state.newState);
        if (result === errorObj) { return state.o.onError(result.e); }
        state.o.onNext(result);
        recurse(state);
      } else {
        state.o.onCompleted();
      }
    }

    GenerateObservable.prototype.subscribeCore = function (o) {
      var state = {
        o: o,
        self: this,
        first: true,
        newState: this._initialState
      };
      return this._s.scheduleRecursive(state, scheduleRecursive);
    };

    return GenerateObservable;
  }(ObservableBase));

  /**
   *  Generates an observable sequence by running a state-driven loop producing the sequence's elements, using the specified scheduler to send out observer messages.
   *
   * @example
   *  var res = Rx.Observable.generate(0, function (x) { return x < 10; }, function (x) { return x + 1; }, function (x) { return x; });
   *  var res = Rx.Observable.generate(0, function (x) { return x < 10; }, function (x) { return x + 1; }, function (x) { return x; }, Rx.Scheduler.timeout);
   * @param {Mixed} initialState Initial state.
   * @param {Function} condition Condition to terminate generation (upon returning false).
   * @param {Function} iterate Iteration step function.
   * @param {Function} resultSelector Selector function for results produced in the sequence.
   * @param {Scheduler} [scheduler] Scheduler on which to run the generator loop. If not provided, defaults to Scheduler.currentThread.
   * @returns {Observable} The generated sequence.
   */
  Observable.generate = function (initialState, condition, iterate, resultSelector, scheduler) {
    isScheduler(scheduler) || (scheduler = currentThreadScheduler);
    return new GenerateObservable(initialState, condition, iterate, resultSelector, scheduler);
  };

  function observableOf (scheduler, array) {
    isScheduler(scheduler) || (scheduler = currentThreadScheduler);
    return new FromArrayObservable(array, scheduler);
  }

  /**
  *  This method creates a new Observable instance with a variable number of arguments, regardless of number or type of the arguments.
  * @returns {Observable} The observable sequence whose elements are pulled from the given arguments.
  */
  Observable.of = function () {
    var len = arguments.length, args = new Array(len);
    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
    return new FromArrayObservable(args, currentThreadScheduler);
  };

  /**
  *  This method creates a new Observable instance with a variable number of arguments, regardless of number or type of the arguments.
  * @param {Scheduler} scheduler A scheduler to use for scheduling the arguments.
  * @returns {Observable} The observable sequence whose elements are pulled from the given arguments.
  */
  Observable.ofWithScheduler = function (scheduler) {
    var len = arguments.length, args = new Array(len - 1);
    for(var i = 1; i < len; i++) { args[i - 1] = arguments[i]; }
    return new FromArrayObservable(args, scheduler);
  };

  /**
   * Creates an Observable sequence from changes to an array using Array.observe.
   * @param {Array} array An array to observe changes.
   * @returns {Observable} An observable sequence containing changes to an array from Array.observe.
   */
  Observable.ofArrayChanges = function(array) {
    if (!Array.isArray(array)) { throw new TypeError('Array.observe only accepts arrays.'); }
    if (typeof Array.observe !== 'function' && typeof Array.unobserve !== 'function') { throw new TypeError('Array.observe is not supported on your platform') }
    return new AnonymousObservable(function(observer) {
      function observerFn(changes) {
        for(var i = 0, len = changes.length; i < len; i++) {
          observer.onNext(changes[i]);
        }
      }
      
      Array.observe(array, observerFn);

      return function () {
        Array.unobserve(array, observerFn);
      };
    });
  };

  /**
   * Creates an Observable sequence from changes to an object using Object.observe.
   * @param {Object} obj An object to observe changes.
   * @returns {Observable} An observable sequence containing changes to an object from Object.observe.
   */
  Observable.ofObjectChanges = function(obj) {
    if (obj == null) { throw new TypeError('object must not be null or undefined.'); }
    if (typeof Object.observe !== 'function' && typeof Object.unobserve !== 'function') { throw new TypeError('Object.observe is not supported on your platform') }
    return new AnonymousObservable(function(observer) {
      function observerFn(changes) {
        for(var i = 0, len = changes.length; i < len; i++) {
          observer.onNext(changes[i]);
        }
      }

      Object.observe(obj, observerFn);

      return function () {
        Object.unobserve(obj, observerFn);
      };
    });
  };

  var NeverObservable = (function(__super__) {
    inherits(NeverObservable, __super__);
    function NeverObservable() {
      __super__.call(this);
    }

    NeverObservable.prototype.subscribeCore = function (observer) {
      return disposableEmpty;
    };

    return NeverObservable;
  }(ObservableBase));

  var NEVER_OBSERVABLE = new NeverObservable();

  /**
   * Returns a non-terminating observable sequence, which can be used to denote an infinite duration (e.g. when using reactive joins).
   * @returns {Observable} An observable sequence whose observers will never get called.
   */
  var observableNever = Observable.never = function () {
    return NEVER_OBSERVABLE;
  };

  var PairsObservable = (function(__super__) {
    inherits(PairsObservable, __super__);
    function PairsObservable(o, scheduler) {
      this._o = o;
      this._keys = Object.keys(o);
      this._scheduler = scheduler;
      __super__.call(this);
    }

    function scheduleMethod(o, obj, keys) {
      return function loopRecursive(i, recurse) {
        if (i < keys.length) {
          var key = keys[i];
          o.onNext([key, obj[key]]);
          recurse(i + 1);
        } else {
          o.onCompleted();
        }
      };
    }

    PairsObservable.prototype.subscribeCore = function (o) {
      return this._scheduler.scheduleRecursive(0, scheduleMethod(o, this._o, this._keys));
    };

    return PairsObservable;
  }(ObservableBase));

  /**
   * Convert an object into an observable sequence of [key, value] pairs.
   * @param {Object} obj The object to inspect.
   * @param {Scheduler} [scheduler] Scheduler to run the enumeration of the input sequence on.
   * @returns {Observable} An observable sequence of [key, value] pairs from the object.
   */
  Observable.pairs = function (obj, scheduler) {
    scheduler || (scheduler = currentThreadScheduler);
    return new PairsObservable(obj, scheduler);
  };

    var RangeObservable = (function(__super__) {
    inherits(RangeObservable, __super__);
    function RangeObservable(start, count, scheduler) {
      this.start = start;
      this.rangeCount = count;
      this.scheduler = scheduler;
      __super__.call(this);
    }

    function loopRecursive(start, count, o) {
      return function loop (i, recurse) {
        if (i < count) {
          o.onNext(start + i);
          recurse(i + 1);
        } else {
          o.onCompleted();
        }
      };
    }

    RangeObservable.prototype.subscribeCore = function (o) {
      return this.scheduler.scheduleRecursive(
        0,
        loopRecursive(this.start, this.rangeCount, o)
      );
    };

    return RangeObservable;
  }(ObservableBase));

  /**
  *  Generates an observable sequence of integral numbers within a specified range, using the specified scheduler to send out observer messages.
  * @param {Number} start The value of the first integer in the sequence.
  * @param {Number} count The number of sequential integers to generate.
  * @param {Scheduler} [scheduler] Scheduler to run the generator loop on. If not specified, defaults to Scheduler.currentThread.
  * @returns {Observable} An observable sequence that contains a range of sequential integral numbers.
  */
  Observable.range = function (start, count, scheduler) {
    isScheduler(scheduler) || (scheduler = currentThreadScheduler);
    return new RangeObservable(start, count, scheduler);
  };

  var RepeatObservable = (function(__super__) {
    inherits(RepeatObservable, __super__);
    function RepeatObservable(value, repeatCount, scheduler) {
      this.value = value;
      this.repeatCount = repeatCount == null ? -1 : repeatCount;
      this.scheduler = scheduler;
      __super__.call(this);
    }

    RepeatObservable.prototype.subscribeCore = function (observer) {
      var sink = new RepeatSink(observer, this);
      return sink.run();
    };

    return RepeatObservable;
  }(ObservableBase));

  function RepeatSink(observer, parent) {
    this.observer = observer;
    this.parent = parent;
  }

  RepeatSink.prototype.run = function () {
    var observer = this.observer, value = this.parent.value;
    function loopRecursive(i, recurse) {
      if (i === -1 || i > 0) {
        observer.onNext(value);
        i > 0 && i--;
      }
      if (i === 0) { return observer.onCompleted(); }
      recurse(i);
    }

    return this.parent.scheduler.scheduleRecursive(this.parent.repeatCount, loopRecursive);
  };

  /**
   *  Generates an observable sequence that repeats the given element the specified number of times, using the specified scheduler to send out observer messages.
   * @param {Mixed} value Element to repeat.
   * @param {Number} repeatCount [Optiona] Number of times to repeat the element. If not specified, repeats indefinitely.
   * @param {Scheduler} scheduler Scheduler to run the producer loop on. If not specified, defaults to Scheduler.immediate.
   * @returns {Observable} An observable sequence that repeats the given element the specified number of times.
   */
  Observable.repeat = function (value, repeatCount, scheduler) {
    isScheduler(scheduler) || (scheduler = currentThreadScheduler);
    return new RepeatObservable(value, repeatCount, scheduler);
  };

  var JustObservable = (function(__super__) {
    inherits(JustObservable, __super__);
    function JustObservable(value, scheduler) {
      this._value = value;
      this._scheduler = scheduler;
      __super__.call(this);
    }

    JustObservable.prototype.subscribeCore = function (o) {
      var state = [this._value, o];
      return this._scheduler === immediateScheduler ?
        scheduleItem(null, state) :
        this._scheduler.schedule(state, scheduleItem);
    };

    function scheduleItem(s, state) {
      var value = state[0], observer = state[1];
      observer.onNext(value);
      observer.onCompleted();
      return disposableEmpty;
    }

    return JustObservable;
  }(ObservableBase));

  /**
   *  Returns an observable sequence that contains a single element, using the specified scheduler to send out observer messages.
   *  There is an alias called 'just' or browsers <IE9.
   * @param {Mixed} value Single element in the resulting observable sequence.
   * @param {Scheduler} scheduler Scheduler to send the single element on. If not specified, defaults to Scheduler.immediate.
   * @returns {Observable} An observable sequence containing the single specified element.
   */
  var observableReturn = Observable['return'] = Observable.just = function (value, scheduler) {
    isScheduler(scheduler) || (scheduler = immediateScheduler);
    return new JustObservable(value, scheduler);
  };

  var ThrowObservable = (function(__super__) {
    inherits(ThrowObservable, __super__);
    function ThrowObservable(error, scheduler) {
      this._error = error;
      this._scheduler = scheduler;
      __super__.call(this);
    }

    ThrowObservable.prototype.subscribeCore = function (o) {
      var state = [this._error, o];
      return this._scheduler === immediateScheduler ?
        scheduleItem(null, state) :
        this._scheduler.schedule(state, scheduleItem);
    };

    function scheduleItem(s, state) {
      var e = state[0], o = state[1];
      o.onError(e);
      return disposableEmpty;
    }

    return ThrowObservable;
  }(ObservableBase));

  /**
   *  Returns an observable sequence that terminates with an exception, using the specified scheduler to send out the single onError message.
   *  There is an alias to this method called 'throwError' for browsers <IE9.
   * @param {Mixed} error An object used for the sequence's termination.
   * @param {Scheduler} scheduler Scheduler to send the exceptional termination call on. If not specified, defaults to Scheduler.immediate.
   * @returns {Observable} The observable sequence that terminates exceptionally with the specified exception object.
   */
  var observableThrow = Observable['throw'] = function (error, scheduler) {
    isScheduler(scheduler) || (scheduler = immediateScheduler);
    return new ThrowObservable(error, scheduler);
  };

  var UsingObservable = (function (__super__) {
    inherits(UsingObservable, __super__);
    function UsingObservable(resFn, obsFn) {
      this._resFn = resFn;
      this._obsFn = obsFn;
      __super__.call(this);
    }

    UsingObservable.prototype.subscribeCore = function (o) {
      var disposable = disposableEmpty;
      var resource = tryCatch(this._resFn)();
      if (resource === errorObj) {
        return new BinaryDisposable(observableThrow(resource.e).subscribe(o), disposable);
      }
      resource && (disposable = resource);
      var source = tryCatch(this._obsFn)(resource);
      if (source === errorObj) {
        return new BinaryDisposable(observableThrow(source.e).subscribe(o), disposable);
      }
      return new BinaryDisposable(source.subscribe(o), disposable);
    };

    return UsingObservable;
  }(ObservableBase));

  /**
   * Constructs an observable sequence that depends on a resource object, whose lifetime is tied to the resulting observable sequence's lifetime.
   * @param {Function} resourceFactory Factory function to obtain a resource object.
   * @param {Function} observableFactory Factory function to obtain an observable sequence that depends on the obtained resource.
   * @returns {Observable} An observable sequence whose lifetime controls the lifetime of the dependent resource object.
   */
  Observable.using = function (resourceFactory, observableFactory) {
    return new UsingObservable(resourceFactory, observableFactory);
  };

  /**
   * Propagates the observable sequence or Promise that reacts first.
   * @param {Observable} rightSource Second observable sequence or Promise.
   * @returns {Observable} {Observable} An observable sequence that surfaces either of the given sequences, whichever reacted first.
   */
  observableProto.amb = function (rightSource) {
    var leftSource = this;
    return new AnonymousObservable(function (observer) {
      var choice,
        leftChoice = 'L', rightChoice = 'R',
        leftSubscription = new SingleAssignmentDisposable(),
        rightSubscription = new SingleAssignmentDisposable();

      isPromise(rightSource) && (rightSource = observableFromPromise(rightSource));

      function choiceL() {
        if (!choice) {
          choice = leftChoice;
          rightSubscription.dispose();
        }
      }

      function choiceR() {
        if (!choice) {
          choice = rightChoice;
          leftSubscription.dispose();
        }
      }

      var leftSubscribe = observerCreate(
        function (left) {
          choiceL();
          choice === leftChoice && observer.onNext(left);
        },
        function (e) {
          choiceL();
          choice === leftChoice && observer.onError(e);
        },
        function () {
          choiceL();
          choice === leftChoice && observer.onCompleted();
        }
      );
      var rightSubscribe = observerCreate(
        function (right) {
          choiceR();
          choice === rightChoice && observer.onNext(right);
        },
        function (e) {
          choiceR();
          choice === rightChoice && observer.onError(e);
        },
        function () {
          choiceR();
          choice === rightChoice && observer.onCompleted();
        }
      );

      leftSubscription.setDisposable(leftSource.subscribe(leftSubscribe));
      rightSubscription.setDisposable(rightSource.subscribe(rightSubscribe));

      return new BinaryDisposable(leftSubscription, rightSubscription);
    });
  };

  function amb(p, c) { return p.amb(c); }

  /**
   * Propagates the observable sequence or Promise that reacts first.
   * @returns {Observable} An observable sequence that surfaces any of the given sequences, whichever reacted first.
   */
  Observable.amb = function () {
    var acc = observableNever(), items;
    if (Array.isArray(arguments[0])) {
      items = arguments[0];
    } else {
      var len = arguments.length;
      items = new Array(items);
      for(var i = 0; i < len; i++) { items[i] = arguments[i]; }
    }
    for (var i = 0, len = items.length; i < len; i++) {
      acc = amb(acc, items[i]);
    }
    return acc;
  };

  var CatchObservable = (function (__super__) {
    inherits(CatchObservable, __super__);
    function CatchObservable(source, fn) {
      this.source = source;
      this._fn = fn;
      __super__.call(this);
    }

    CatchObservable.prototype.subscribeCore = function (o) {
      var d1 = new SingleAssignmentDisposable(), subscription = new SerialDisposable();
      subscription.setDisposable(d1);
      d1.setDisposable(this.source.subscribe(new CatchObserver(o, subscription, this._fn)));
      return subscription;
    };

    return CatchObservable;
  }(ObservableBase));

  var CatchObserver = (function(__super__) {
    inherits(CatchObserver, __super__);
    function CatchObserver(o, s, fn) {
      this._o = o;
      this._s = s;
      this._fn = fn;
      __super__.call(this);
    }

    CatchObserver.prototype.next = function (x) { this._o.onNext(x); };
    CatchObserver.prototype.completed = function () { return this._o.onCompleted(); };
    CatchObserver.prototype.error = function (e) {
      var result = tryCatch(this._fn)(e);
      if (result === errorObj) { return this._o.onError(result.e); }
      isPromise(result) && (result = observableFromPromise(result));

      var d = new SingleAssignmentDisposable();
      this._s.setDisposable(d);
      d.setDisposable(result.subscribe(this._o));
    };

    return CatchObserver;
  }(AbstractObserver));

  /**
   * Continues an observable sequence that is terminated by an exception with the next observable sequence.
   * @param {Mixed} handlerOrSecond Exception handler function that returns an observable sequence given the error that occurred in the first sequence, or a second observable sequence used to produce results when an error occurred in the first sequence.
   * @returns {Observable} An observable sequence containing the first sequence's elements, followed by the elements of the handler sequence in case an exception occurred.
   */
  observableProto['catch'] = function (handlerOrSecond) {
    return isFunction(handlerOrSecond) ? new CatchObservable(this, handlerOrSecond) : observableCatch([this, handlerOrSecond]);
  };

  /**
   * Continues an observable sequence that is terminated by an exception with the next observable sequence.
   * @param {Array | Arguments} args Arguments or an array to use as the next sequence if an error occurs.
   * @returns {Observable} An observable sequence containing elements from consecutive source sequences until a source sequence terminates successfully.
   */
  var observableCatch = Observable['catch'] = function () {
    var items;
    if (Array.isArray(arguments[0])) {
      items = arguments[0];
    } else {
      var len = arguments.length;
      items = new Array(len);
      for(var i = 0; i < len; i++) { items[i] = arguments[i]; }
    }
    return enumerableOf(items).catchError();
  };

  /**
   * Merges the specified observable sequences into one observable sequence by using the selector function whenever any of the observable sequences or Promises produces an element.
   * This can be in the form of an argument list of observables or an array.
   *
   * @example
   * 1 - obs = observable.combineLatest(obs1, obs2, obs3, function (o1, o2, o3) { return o1 + o2 + o3; });
   * 2 - obs = observable.combineLatest([obs1, obs2, obs3], function (o1, o2, o3) { return o1 + o2 + o3; });
   * @returns {Observable} An observable sequence containing the result of combining elements of the sources using the specified result selector function.
   */
  observableProto.combineLatest = function () {
    var len = arguments.length, args = new Array(len);
    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
    if (Array.isArray(args[0])) {
      args[0].unshift(this);
    } else {
      args.unshift(this);
    }
    return combineLatest.apply(this, args);
  };

  function falseFactory() { return false; }
  function argumentsToArray() {
    var len = arguments.length, args = new Array(len);
    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
    return args;
  }

  var CombineLatestObservable = (function(__super__) {
    inherits(CombineLatestObservable, __super__);
    function CombineLatestObservable(params, cb) {
      this._params = params;
      this._cb = cb;
      __super__.call(this);
    }

    CombineLatestObservable.prototype.subscribeCore = function(observer) {
      var len = this._params.length,
          subscriptions = new Array(len);

      var state = {
        hasValue: arrayInitialize(len, falseFactory),
        hasValueAll: false,
        isDone: arrayInitialize(len, falseFactory),
        values: new Array(len)
      };

      for (var i = 0; i < len; i++) {
        var source = this._params[i], sad = new SingleAssignmentDisposable();
        subscriptions[i] = sad;
        isPromise(source) && (source = observableFromPromise(source));
        sad.setDisposable(source.subscribe(new CombineLatestObserver(observer, i, this._cb, state)));
      }

      return new NAryDisposable(subscriptions);
    };

    return CombineLatestObservable;
  }(ObservableBase));

  var CombineLatestObserver = (function (__super__) {
    inherits(CombineLatestObserver, __super__);
    function CombineLatestObserver(o, i, cb, state) {
      this._o = o;
      this._i = i;
      this._cb = cb;
      this._state = state;
      __super__.call(this);
    }

    function notTheSame(i) {
      return function (x, j) {
        return j !== i;
      };
    }

    CombineLatestObserver.prototype.next = function (x) {
      this._state.values[this._i] = x;
      this._state.hasValue[this._i] = true;
      if (this._state.hasValueAll || (this._state.hasValueAll = this._state.hasValue.every(identity))) {
        var res = tryCatch(this._cb).apply(null, this._state.values);
        if (res === errorObj) { return this._o.onError(res.e); }
        this._o.onNext(res);
      } else if (this._state.isDone.filter(notTheSame(this._i)).every(identity)) {
        this._o.onCompleted();
      }
    };

    CombineLatestObserver.prototype.error = function (e) {
      this._o.onError(e);
    };

    CombineLatestObserver.prototype.completed = function () {
      this._state.isDone[this._i] = true;
      this._state.isDone.every(identity) && this._o.onCompleted();
    };

    return CombineLatestObserver;
  }(AbstractObserver));

  /**
  * Merges the specified observable sequences into one observable sequence by using the selector function whenever any of the observable sequences or Promises produces an element.
  *
  * @example
  * 1 - obs = Rx.Observable.combineLatest(obs1, obs2, obs3, function (o1, o2, o3) { return o1 + o2 + o3; });
  * 2 - obs = Rx.Observable.combineLatest([obs1, obs2, obs3], function (o1, o2, o3) { return o1 + o2 + o3; });
  * @returns {Observable} An observable sequence containing the result of combining elements of the sources using the specified result selector function.
  */
  var combineLatest = Observable.combineLatest = function () {
    var len = arguments.length, args = new Array(len);
    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
    var resultSelector = isFunction(args[len - 1]) ? args.pop() : argumentsToArray;
    Array.isArray(args[0]) && (args = args[0]);
    return new CombineLatestObservable(args, resultSelector);
  };

  /**
   * Concatenates all the observable sequences.  This takes in either an array or variable arguments to concatenate.
   * @returns {Observable} An observable sequence that contains the elements of each given sequence, in sequential order.
   */
  observableProto.concat = function () {
    for(var args = [], i = 0, len = arguments.length; i < len; i++) { args.push(arguments[i]); }
    args.unshift(this);
    return observableConcat.apply(null, args);
  };

  var ConcatObserver = (function(__super__) {
    inherits(ConcatObserver, __super__);
    function ConcatObserver(s, fn) {
      this._s = s;
      this._fn = fn;
      __super__.call(this);
    }

    ConcatObserver.prototype.next = function (x) { this._s.o.onNext(x); };
    ConcatObserver.prototype.error = function (e) { this._s.o.onError(e); };
    ConcatObserver.prototype.completed = function () { this._s.i++; this._fn(this._s); };

    return ConcatObserver;
  }(AbstractObserver));

  var ConcatObservable = (function(__super__) {
    inherits(ConcatObservable, __super__);
    function ConcatObservable(sources) {
      this._sources = sources;
      __super__.call(this);
    }

    function scheduleRecursive (state, recurse) {
      if (state.disposable.isDisposed) { return; }
      if (state.i === state.sources.length) { return state.o.onCompleted(); }

      // Check if promise
      var currentValue = state.sources[state.i];
      isPromise(currentValue) && (currentValue = observableFromPromise(currentValue));

      var d = new SingleAssignmentDisposable();
      state.subscription.setDisposable(d);
      d.setDisposable(currentValue.subscribe(new ConcatObserver(state, recurse)));
    }

    ConcatObservable.prototype.subscribeCore = function(o) {
      var subscription = new SerialDisposable();
      var disposable = disposableCreate(noop);
      var state = {
        o: o,
        i: 0,
        subscription: subscription,
        disposable: disposable,
        sources: this._sources
      };

      var cancelable = immediateScheduler.scheduleRecursive(state, scheduleRecursive);
      return new NAryDisposable([subscription, disposable, cancelable]);
    };

    return ConcatObservable;
  }(ObservableBase));

  /**
   * Concatenates all the observable sequences.
   * @param {Array | Arguments} args Arguments or an array to concat to the observable sequence.
   * @returns {Observable} An observable sequence that contains the elements of each given sequence, in sequential order.
   */
  var observableConcat = Observable.concat = function () {
    var args;
    if (Array.isArray(arguments[0])) {
      args = arguments[0];
    } else {
      args = new Array(arguments.length);
      for(var i = 0, len = arguments.length; i < len; i++) { args[i] = arguments[i]; }
    }
    return new ConcatObservable(args);
  };

  /**
   * Concatenates an observable sequence of observable sequences.
   * @returns {Observable} An observable sequence that contains the elements of each observed inner sequence, in sequential order.
   */
  observableProto.concatAll = function () {
    return this.merge(1);
  };

  var MergeObservable = (function (__super__) {
    inherits(MergeObservable, __super__);

    function MergeObservable(source, maxConcurrent) {
      this.source = source;
      this.maxConcurrent = maxConcurrent;
      __super__.call(this);
    }

    MergeObservable.prototype.subscribeCore = function(observer) {
      var g = new CompositeDisposable();
      g.add(this.source.subscribe(new MergeObserver(observer, this.maxConcurrent, g)));
      return g;
    };

    return MergeObservable;

  }(ObservableBase));

  var MergeObserver = (function (__super__) {
    function MergeObserver(o, max, g) {
      this.o = o;
      this.max = max;
      this.g = g;
      this.done = false;
      this.q = [];
      this.activeCount = 0;
      __super__.call(this);
    }

    inherits(MergeObserver, __super__);

    MergeObserver.prototype.handleSubscribe = function (xs) {
      var sad = new SingleAssignmentDisposable();
      this.g.add(sad);
      isPromise(xs) && (xs = observableFromPromise(xs));
      sad.setDisposable(xs.subscribe(new InnerObserver(this, sad)));
    };

    MergeObserver.prototype.next = function (innerSource) {
      if(this.activeCount < this.max) {
        this.activeCount++;
        this.handleSubscribe(innerSource);
      } else {
        this.q.push(innerSource);
      }
    };
    MergeObserver.prototype.error = function (e) { this.o.onError(e); };
    MergeObserver.prototype.completed = function () { this.done = true; this.activeCount === 0 && this.o.onCompleted(); };

    function InnerObserver(parent, sad) {
      this.parent = parent;
      this.sad = sad;
      __super__.call(this);
    }

    inherits(InnerObserver, __super__);

    InnerObserver.prototype.next = function (x) { this.parent.o.onNext(x); };
    InnerObserver.prototype.error = function (e) { this.parent.o.onError(e); };
    InnerObserver.prototype.completed = function () {
      this.parent.g.remove(this.sad);
      if (this.parent.q.length > 0) {
        this.parent.handleSubscribe(this.parent.q.shift());
      } else {
        this.parent.activeCount--;
        this.parent.done && this.parent.activeCount === 0 && this.parent.o.onCompleted();
      }
    };

    return MergeObserver;
  }(AbstractObserver));

  /**
  * Merges an observable sequence of observable sequences into an observable sequence, limiting the number of concurrent subscriptions to inner sequences.
  * Or merges two observable sequences into a single observable sequence.
  * @param {Mixed} [maxConcurrentOrOther] Maximum number of inner observable sequences being subscribed to concurrently or the second observable sequence.
  * @returns {Observable} The observable sequence that merges the elements of the inner sequences.
  */
  observableProto.merge = function (maxConcurrentOrOther) {
    return typeof maxConcurrentOrOther !== 'number' ?
      observableMerge(this, maxConcurrentOrOther) :
      new MergeObservable(this, maxConcurrentOrOther);
  };

  /**
   * Merges all the observable sequences into a single observable sequence.
   * The scheduler is optional and if not specified, the immediate scheduler is used.
   * @returns {Observable} The observable sequence that merges the elements of the observable sequences.
   */
  var observableMerge = Observable.merge = function () {
    var scheduler, sources = [], i, len = arguments.length;
    if (!arguments[0]) {
      scheduler = immediateScheduler;
      for(i = 1; i < len; i++) { sources.push(arguments[i]); }
    } else if (isScheduler(arguments[0])) {
      scheduler = arguments[0];
      for(i = 1; i < len; i++) { sources.push(arguments[i]); }
    } else {
      scheduler = immediateScheduler;
      for(i = 0; i < len; i++) { sources.push(arguments[i]); }
    }
    if (Array.isArray(sources[0])) {
      sources = sources[0];
    }
    return observableOf(scheduler, sources).mergeAll();
  };

  var MergeAllObservable = (function (__super__) {
    inherits(MergeAllObservable, __super__);

    function MergeAllObservable(source) {
      this.source = source;
      __super__.call(this);
    }

    MergeAllObservable.prototype.subscribeCore = function (o) {
      var g = new CompositeDisposable(), m = new SingleAssignmentDisposable();
      g.add(m);
      m.setDisposable(this.source.subscribe(new MergeAllObserver(o, g)));
      return g;
    };

    return MergeAllObservable;
  }(ObservableBase));

  var MergeAllObserver = (function (__super__) {
    function MergeAllObserver(o, g) {
      this.o = o;
      this.g = g;
      this.done = false;
      __super__.call(this);
    }

    inherits(MergeAllObserver, __super__);

    MergeAllObserver.prototype.next = function(innerSource) {
      var sad = new SingleAssignmentDisposable();
      this.g.add(sad);
      isPromise(innerSource) && (innerSource = observableFromPromise(innerSource));
      sad.setDisposable(innerSource.subscribe(new InnerObserver(this, sad)));
    };

    MergeAllObserver.prototype.error = function (e) {
      this.o.onError(e);
    };

    MergeAllObserver.prototype.completed = function () {
      this.done = true;
      this.g.length === 1 && this.o.onCompleted();
    };

    function InnerObserver(parent, sad) {
      this.parent = parent;
      this.sad = sad;
      __super__.call(this);
    }

    inherits(InnerObserver, __super__);

    InnerObserver.prototype.next = function (x) {
      this.parent.o.onNext(x);
    };
    InnerObserver.prototype.error = function (e) {
      this.parent.o.onError(e);
    };
    InnerObserver.prototype.completed = function () {
      this.parent.g.remove(this.sad);
      this.parent.done && this.parent.g.length === 1 && this.parent.o.onCompleted();
    };

    return MergeAllObserver;
  }(AbstractObserver));

  /**
  * Merges an observable sequence of observable sequences into an observable sequence.
  * @returns {Observable} The observable sequence that merges the elements of the inner sequences.
  */
  observableProto.mergeAll = function () {
    return new MergeAllObservable(this);
  };

  var CompositeError = Rx.CompositeError = function(errors) {
    this.innerErrors = errors;
    this.message = 'This contains multiple errors. Check the innerErrors';
    Error.call(this);
  };
  CompositeError.prototype = Object.create(Error.prototype);
  CompositeError.prototype.name = 'CompositeError';

  var MergeDelayErrorObservable = (function(__super__) {
    inherits(MergeDelayErrorObservable, __super__);
    function MergeDelayErrorObservable(source) {
      this.source = source;
      __super__.call(this);
    }

    MergeDelayErrorObservable.prototype.subscribeCore = function (o) {
      var group = new CompositeDisposable(),
        m = new SingleAssignmentDisposable(),
        state = { isStopped: false, errors: [], o: o };

      group.add(m);
      m.setDisposable(this.source.subscribe(new MergeDelayErrorObserver(group, state)));

      return group;
    };

    return MergeDelayErrorObservable;
  }(ObservableBase));

  var MergeDelayErrorObserver = (function(__super__) {
    inherits(MergeDelayErrorObserver, __super__);
    function MergeDelayErrorObserver(group, state) {
      this._group = group;
      this._state = state;
      __super__.call(this);
    }

    function setCompletion(o, errors) {
      if (errors.length === 0) {
        o.onCompleted();
      } else if (errors.length === 1) {
        o.onError(errors[0]);
      } else {
        o.onError(new CompositeError(errors));
      }
    }

    MergeDelayErrorObserver.prototype.next = function (x) {
      var inner = new SingleAssignmentDisposable();
      this._group.add(inner);

      // Check for promises support
      isPromise(x) && (x = observableFromPromise(x));
      inner.setDisposable(x.subscribe(new InnerObserver(inner, this._group, this._state)));
    };

    MergeDelayErrorObserver.prototype.error = function (e) {
      this._state.errors.push(e);
      this._state.isStopped = true;
      this._group.length === 1 && setCompletion(this._state.o, this._state.errors);
    };

    MergeDelayErrorObserver.prototype.completed = function () {
      this._state.isStopped = true;
      this._group.length === 1 && setCompletion(this._state.o, this._state.errors);
    };

    inherits(InnerObserver, __super__);
    function InnerObserver(inner, group, state) {
      this._inner = inner;
      this._group = group;
      this._state = state;
      __super__.call(this);
    }

    InnerObserver.prototype.next = function (x) { this._state.o.onNext(x); };
    InnerObserver.prototype.error = function (e) {
      this._state.errors.push(e);
      this._group.remove(this._inner);
      this._state.isStopped && this._group.length === 1 && setCompletion(this._state.o, this._state.errors);
    };
    InnerObserver.prototype.completed = function () {
      this._group.remove(this._inner);
      this._state.isStopped && this._group.length === 1 && setCompletion(this._state.o, this._state.errors);
    };

    return MergeDelayErrorObserver;
  }(AbstractObserver));

  /**
  * Flattens an Observable that emits Observables into one Observable, in a way that allows an Observer to
  * receive all successfully emitted items from all of the source Observables without being interrupted by
  * an error notification from one of them.
  *
  * This behaves like Observable.prototype.mergeAll except that if any of the merged Observables notify of an
  * error via the Observer's onError, mergeDelayError will refrain from propagating that
  * error notification until all of the merged Observables have finished emitting items.
  * @param {Array | Arguments} args Arguments or an array to merge.
  * @returns {Observable} an Observable that emits all of the items emitted by the Observables emitted by the Observable
  */
  Observable.mergeDelayError = function() {
    var args;
    if (Array.isArray(arguments[0])) {
      args = arguments[0];
    } else {
      var len = arguments.length;
      args = new Array(len);
      for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
    }
    var source = observableOf(null, args);
    return new MergeDelayErrorObservable(source);
  };

  /**
   * Continues an observable sequence that is terminated normally or by an exception with the next observable sequence.
   * @param {Observable} second Second observable sequence used to produce results after the first sequence terminates.
   * @returns {Observable} An observable sequence that concatenates the first and second sequence, even if the first sequence terminates exceptionally.
   */
  observableProto.onErrorResumeNext = function (second) {
    if (!second) { throw new Error('Second observable is required'); }
    return onErrorResumeNext([this, second]);
  };

  var OnErrorResumeNextObservable = (function(__super__) {
    inherits(OnErrorResumeNextObservable, __super__);
    function OnErrorResumeNextObservable(sources) {
      this.sources = sources;
      __super__.call(this);
    }

    function scheduleMethod(state, recurse) {
      if (state.pos < state.sources.length) {
        var current = state.sources[state.pos++];
        isPromise(current) && (current = observableFromPromise(current));
        var d = new SingleAssignmentDisposable();
        state.subscription.setDisposable(d);
        d.setDisposable(current.subscribe(new OnErrorResumeNextObserver(state, recurse)));
      } else {
        state.o.onCompleted();
      }
    }

    OnErrorResumeNextObservable.prototype.subscribeCore = function (o) {
      var subscription = new SerialDisposable(),
          state = {pos: 0, subscription: subscription, o: o, sources: this.sources },
          cancellable = immediateScheduler.scheduleRecursive(state, scheduleMethod);

      return new BinaryDisposable(subscription, cancellable);
    };

    return OnErrorResumeNextObservable;
  }(ObservableBase));

  var OnErrorResumeNextObserver = (function(__super__) {
    inherits(OnErrorResumeNextObserver, __super__);
    function OnErrorResumeNextObserver(state, recurse) {
      this._state = state;
      this._recurse = recurse;
      __super__.call(this);
    }

    OnErrorResumeNextObserver.prototype.next = function (x) { this._state.o.onNext(x); };
    OnErrorResumeNextObserver.prototype.error = function () { this._recurse(this._state); };
    OnErrorResumeNextObserver.prototype.completed = function () { this._recurse(this._state); };

    return OnErrorResumeNextObserver;
  }(AbstractObserver));

  /**
   * Continues an observable sequence that is terminated normally or by an exception with the next observable sequence.
   * @returns {Observable} An observable sequence that concatenates the source sequences, even if a sequence terminates exceptionally.
   */
  var onErrorResumeNext = Observable.onErrorResumeNext = function () {
    var sources = [];
    if (Array.isArray(arguments[0])) {
      sources = arguments[0];
    } else {
      var len = arguments.length;
      sources = new Array(len);
      for(var i = 0; i < len; i++) { sources[i] = arguments[i]; }
    }
    return new OnErrorResumeNextObservable(sources);
  };

  var SkipUntilObservable = (function(__super__) {
    inherits(SkipUntilObservable, __super__);

    function SkipUntilObservable(source, other) {
      this._s = source;
      this._o = isPromise(other) ? observableFromPromise(other) : other;
      this._open = false;
      __super__.call(this);
    }

    SkipUntilObservable.prototype.subscribeCore = function(o) {
      var leftSubscription = new SingleAssignmentDisposable();
      leftSubscription.setDisposable(this._s.subscribe(new SkipUntilSourceObserver(o, this)));

      isPromise(this._o) && (this._o = observableFromPromise(this._o));

      var rightSubscription = new SingleAssignmentDisposable();
      rightSubscription.setDisposable(this._o.subscribe(new SkipUntilOtherObserver(o, this, rightSubscription)));

      return new BinaryDisposable(leftSubscription, rightSubscription);
    };

    return SkipUntilObservable;
  }(ObservableBase));

  var SkipUntilSourceObserver = (function(__super__) {
    inherits(SkipUntilSourceObserver, __super__);
    function SkipUntilSourceObserver(o, p) {
      this._o = o;
      this._p = p;
      __super__.call(this);
    }

    SkipUntilSourceObserver.prototype.next = function (x) {
      this._p._open && this._o.onNext(x);
    };

    SkipUntilSourceObserver.prototype.error = function (err) {
      this._o.onError(err);
    };

    SkipUntilSourceObserver.prototype.onCompleted = function () {
      this._p._open && this._o.onCompleted();
    };

    return SkipUntilSourceObserver;
  }(AbstractObserver));

  var SkipUntilOtherObserver = (function(__super__) {
    inherits(SkipUntilOtherObserver, __super__);
    function SkipUntilOtherObserver(o, p, r) {
      this._o = o;
      this._p = p;
      this._r = r;
      __super__.call(this);
    }

    SkipUntilOtherObserver.prototype.next = function () {
      this._p._open = true;
      this._r.dispose();
    };

    SkipUntilOtherObserver.prototype.error = function (err) {
      this._o.onError(err);
    };

    SkipUntilOtherObserver.prototype.onCompleted = function () {
      this._r.dispose();
    };

    return SkipUntilOtherObserver;
  }(AbstractObserver));

  /**
   * Returns the values from the source observable sequence only after the other observable sequence produces a value.
   * @param {Observable | Promise} other The observable sequence or Promise that triggers propagation of elements of the source sequence.
   * @returns {Observable} An observable sequence containing the elements of the source sequence starting from the point the other sequence triggered propagation.
   */
  observableProto.skipUntil = function (other) {
    return new SkipUntilObservable(this, other);
  };

  var SwitchObservable = (function(__super__) {
    inherits(SwitchObservable, __super__);
    function SwitchObservable(source) {
      this.source = source;
      __super__.call(this);
    }

    SwitchObservable.prototype.subscribeCore = function (o) {
      var inner = new SerialDisposable(), s = this.source.subscribe(new SwitchObserver(o, inner));
      return new BinaryDisposable(s, inner);
    };

    inherits(SwitchObserver, AbstractObserver);
    function SwitchObserver(o, inner) {
      this.o = o;
      this.inner = inner;
      this.stopped = false;
      this.latest = 0;
      this.hasLatest = false;
      AbstractObserver.call(this);
    }

    SwitchObserver.prototype.next = function (innerSource) {
      var d = new SingleAssignmentDisposable(), id = ++this.latest;
      this.hasLatest = true;
      this.inner.setDisposable(d);
      isPromise(innerSource) && (innerSource = observableFromPromise(innerSource));
      d.setDisposable(innerSource.subscribe(new InnerObserver(this, id)));
    };

    SwitchObserver.prototype.error = function (e) {
      this.o.onError(e);
    };

    SwitchObserver.prototype.completed = function () {
      this.stopped = true;
      !this.hasLatest && this.o.onCompleted();
    };

    inherits(InnerObserver, AbstractObserver);
    function InnerObserver(parent, id) {
      this.parent = parent;
      this.id = id;
      AbstractObserver.call(this);
    }
    InnerObserver.prototype.next = function (x) {
      this.parent.latest === this.id && this.parent.o.onNext(x);
    };

    InnerObserver.prototype.error = function (e) {
      this.parent.latest === this.id && this.parent.o.onError(e);
    };

    InnerObserver.prototype.completed = function () {
      if (this.parent.latest === this.id) {
        this.parent.hasLatest = false;
        this.parent.stopped && this.parent.o.onCompleted();
      }
    };

    return SwitchObservable;
  }(ObservableBase));

  /**
  * Transforms an observable sequence of observable sequences into an observable sequence producing values only from the most recent observable sequence.
  * @returns {Observable} The observable sequence that at any point in time produces the elements of the most recent inner observable sequence that has been received.
  */
  observableProto['switch'] = observableProto.switchLatest = function () {
    return new SwitchObservable(this);
  };

  var TakeUntilObservable = (function(__super__) {
    inherits(TakeUntilObservable, __super__);

    function TakeUntilObservable(source, other) {
      this.source = source;
      this.other = isPromise(other) ? observableFromPromise(other) : other;
      __super__.call(this);
    }

    TakeUntilObservable.prototype.subscribeCore = function(o) {
      return new BinaryDisposable(
        this.source.subscribe(o),
        this.other.subscribe(new TakeUntilObserver(o))
      );
    };

    return TakeUntilObservable;
  }(ObservableBase));

  var TakeUntilObserver = (function(__super__) {
    inherits(TakeUntilObserver, __super__);
    function TakeUntilObserver(o) {
      this._o = o;
      __super__.call(this);
    }

    TakeUntilObserver.prototype.next = function () {
      this._o.onCompleted();
    };

    TakeUntilObserver.prototype.error = function (err) {
      this._o.onError(err);
    };

    TakeUntilObserver.prototype.onCompleted = noop;

    return TakeUntilObserver;
  }(AbstractObserver));

  /**
   * Returns the values from the source observable sequence until the other observable sequence produces a value.
   * @param {Observable | Promise} other Observable sequence or Promise that terminates propagation of elements of the source sequence.
   * @returns {Observable} An observable sequence containing the elements of the source sequence up to the point the other sequence interrupted further propagation.
   */
  observableProto.takeUntil = function (other) {
    return new TakeUntilObservable(this, other);
  };

  function falseFactory() { return false; }
  function argumentsToArray() {
    var len = arguments.length, args = new Array(len);
    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
    return args;
  }

  var WithLatestFromObservable = (function(__super__) {
    inherits(WithLatestFromObservable, __super__);
    function WithLatestFromObservable(source, sources, resultSelector) {
      this._s = source;
      this._ss = sources;
      this._cb = resultSelector;
      __super__.call(this);
    }

    WithLatestFromObservable.prototype.subscribeCore = function (o) {
      var len = this._ss.length;
      var state = {
        hasValue: arrayInitialize(len, falseFactory),
        hasValueAll: false,
        values: new Array(len)
      };

      var n = this._ss.length, subscriptions = new Array(n + 1);
      for (var i = 0; i < n; i++) {
        var other = this._ss[i], sad = new SingleAssignmentDisposable();
        isPromise(other) && (other = observableFromPromise(other));
        sad.setDisposable(other.subscribe(new WithLatestFromOtherObserver(o, i, state)));
        subscriptions[i] = sad;
      }

      var outerSad = new SingleAssignmentDisposable();
      outerSad.setDisposable(this._s.subscribe(new WithLatestFromSourceObserver(o, this._cb, state)));
      subscriptions[n] = outerSad;

      return new NAryDisposable(subscriptions);
    };

    return WithLatestFromObservable;
  }(ObservableBase));

  var WithLatestFromOtherObserver = (function (__super__) {
    inherits(WithLatestFromOtherObserver, __super__);
    function WithLatestFromOtherObserver(o, i, state) {
      this._o = o;
      this._i = i;
      this._state = state;
      __super__.call(this);
    }

    WithLatestFromOtherObserver.prototype.next = function (x) {
      this._state.values[this._i] = x;
      this._state.hasValue[this._i] = true;
      this._state.hasValueAll = this._state.hasValue.every(identity);
    };

    WithLatestFromOtherObserver.prototype.error = function (e) {
      this._o.onError(e);
    };

    WithLatestFromOtherObserver.prototype.completed = noop;

    return WithLatestFromOtherObserver;
  }(AbstractObserver));

  var WithLatestFromSourceObserver = (function (__super__) {
    inherits(WithLatestFromSourceObserver, __super__);
    function WithLatestFromSourceObserver(o, cb, state) {
      this._o = o;
      this._cb = cb;
      this._state = state;
      __super__.call(this);
    }

    WithLatestFromSourceObserver.prototype.next = function (x) {
      var allValues = [x].concat(this._state.values);
      if (!this._state.hasValueAll) { return; }
      var res = tryCatch(this._cb).apply(null, allValues);
      if (res === errorObj) { return this._o.onError(res.e); }
      this._o.onNext(res);
    };

    WithLatestFromSourceObserver.prototype.error = function (e) {
      this._o.onError(e);
    };

    WithLatestFromSourceObserver.prototype.completed = function () {
      this._o.onCompleted();
    };

    return WithLatestFromSourceObserver;
  }(AbstractObserver));

  /**
   * Merges the specified observable sequences into one observable sequence by using the selector function only when the (first) source observable sequence produces an element.
   * @returns {Observable} An observable sequence containing the result of combining elements of the sources using the specified result selector function.
   */
  observableProto.withLatestFrom = function () {
    if (arguments.length === 0) { throw new Error('invalid arguments'); }

    var len = arguments.length, args = new Array(len);
    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
    var resultSelector = isFunction(args[len - 1]) ? args.pop() : argumentsToArray;
    Array.isArray(args[0]) && (args = args[0]);

    return new WithLatestFromObservable(this, args, resultSelector);
  };

  function falseFactory() { return false; }
  function emptyArrayFactory() { return []; }

  var ZipObservable = (function(__super__) {
    inherits(ZipObservable, __super__);
    function ZipObservable(sources, resultSelector) {
      this._s = sources;
      this._cb = resultSelector;
      __super__.call(this);
    }

    ZipObservable.prototype.subscribeCore = function(observer) {
      var n = this._s.length,
          subscriptions = new Array(n),
          done = arrayInitialize(n, falseFactory),
          q = arrayInitialize(n, emptyArrayFactory);

      for (var i = 0; i < n; i++) {
        var source = this._s[i], sad = new SingleAssignmentDisposable();
        subscriptions[i] = sad;
        isPromise(source) && (source = observableFromPromise(source));
        sad.setDisposable(source.subscribe(new ZipObserver(observer, i, this, q, done)));
      }

      return new NAryDisposable(subscriptions);
    };

    return ZipObservable;
  }(ObservableBase));

  var ZipObserver = (function (__super__) {
    inherits(ZipObserver, __super__);
    function ZipObserver(o, i, p, q, d) {
      this._o = o;
      this._i = i;
      this._p = p;
      this._q = q;
      this._d = d;
      __super__.call(this);
    }

    function notEmpty(x) { return x.length > 0; }
    function shiftEach(x) { return x.shift(); }
    function notTheSame(i) {
      return function (x, j) {
        return j !== i;
      };
    }

    ZipObserver.prototype.next = function (x) {
      this._q[this._i].push(x);
      if (this._q.every(notEmpty)) {
        var queuedValues = this._q.map(shiftEach);
        var res = tryCatch(this._p._cb).apply(null, queuedValues);
        if (res === errorObj) { return this._o.onError(res.e); }
        this._o.onNext(res);
      } else if (this._d.filter(notTheSame(this._i)).every(identity)) {
        this._o.onCompleted();
      }
    };

    ZipObserver.prototype.error = function (e) {
      this._o.onError(e);
    };

    ZipObserver.prototype.completed = function () {
      this._d[this._i] = true;
      this._d.every(identity) && this._o.onCompleted();
    };

    return ZipObserver;
  }(AbstractObserver));

  /**
   * Merges the specified observable sequences into one observable sequence by using the selector function whenever all of the observable sequences or an array have produced an element at a corresponding index.
   * The last element in the arguments must be a function to invoke for each series of elements at corresponding indexes in the args.
   * @returns {Observable} An observable sequence containing the result of combining elements of the args using the specified result selector function.
   */
  observableProto.zip = function () {
    if (arguments.length === 0) { throw new Error('invalid arguments'); }

    var len = arguments.length, args = new Array(len);
    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
    var resultSelector = isFunction(args[len - 1]) ? args.pop() : argumentsToArray;
    Array.isArray(args[0]) && (args = args[0]);

    var parent = this;
    args.unshift(parent);

    return new ZipObservable(args, resultSelector);
  };

  /**
   * Merges the specified observable sequences into one observable sequence by using the selector function whenever all of the observable sequences have produced an element at a corresponding index.
   * @param arguments Observable sources.
   * @param {Function} resultSelector Function to invoke for each series of elements at corresponding indexes in the sources.
   * @returns {Observable} An observable sequence containing the result of combining elements of the sources using the specified result selector function.
   */
  Observable.zip = function () {
    var len = arguments.length, args = new Array(len);
    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
    if (Array.isArray(args[0])) {
      args = isFunction(args[1]) ? args[0].concat(args[1]) : args[0];
    }
    var first = args.shift();
    return first.zip.apply(first, args);
  };

function falseFactory() { return false; }
function emptyArrayFactory() { return []; }
function argumentsToArray() {
  var len = arguments.length, args = new Array(len);
  for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
  return args;
}

var ZipIterableObservable = (function(__super__) {
  inherits(ZipIterableObservable, __super__);
  function ZipIterableObservable(sources, cb) {
    this.sources = sources;
    this._cb = cb;
    __super__.call(this);
  }

  ZipIterableObservable.prototype.subscribeCore = function (o) {
    var sources = this.sources, len = sources.length, subscriptions = new Array(len);

    var state = {
      q: arrayInitialize(len, emptyArrayFactory),
      done: arrayInitialize(len, falseFactory),
      cb: this._cb,
      o: o
    };

    for (var i = 0; i < len; i++) {
      (function (i) {
        var source = sources[i], sad = new SingleAssignmentDisposable();
        (isArrayLike(source) || isIterable(source)) && (source = observableFrom(source));

        subscriptions[i] = sad;
        sad.setDisposable(source.subscribe(new ZipIterableObserver(state, i)));
      }(i));
    }

    return new NAryDisposable(subscriptions);
  };

  return ZipIterableObservable;
}(ObservableBase));

var ZipIterableObserver = (function (__super__) {
  inherits(ZipIterableObserver, __super__);
  function ZipIterableObserver(s, i) {
    this._s = s;
    this._i = i;
    __super__.call(this);
  }

  function notEmpty(x) { return x.length > 0; }
  function shiftEach(x) { return x.shift(); }
  function notTheSame(i) {
    return function (x, j) {
      return j !== i;
    };
  }

  ZipIterableObserver.prototype.next = function (x) {
    this._s.q[this._i].push(x);
    if (this._s.q.every(notEmpty)) {
      var queuedValues = this._s.q.map(shiftEach),
          res = tryCatch(this._s.cb).apply(null, queuedValues);
      if (res === errorObj) { return this._s.o.onError(res.e); }
      this._s.o.onNext(res);
    } else if (this._s.done.filter(notTheSame(this._i)).every(identity)) {
      this._s.o.onCompleted();
    }
  };

  ZipIterableObserver.prototype.error = function (e) { this._s.o.onError(e); };

  ZipIterableObserver.prototype.completed = function () {
    this._s.done[this._i] = true;
    this._s.done.every(identity) && this._s.o.onCompleted();
  };

  return ZipIterableObserver;
}(AbstractObserver));

/**
 * Merges the specified observable sequences into one observable sequence by using the selector function whenever all of the observable sequences or an array have produced an element at a corresponding index.
 * The last element in the arguments must be a function to invoke for each series of elements at corresponding indexes in the args.
 * @returns {Observable} An observable sequence containing the result of combining elements of the args using the specified result selector function.
 */
observableProto.zipIterable = function () {
  if (arguments.length === 0) { throw new Error('invalid arguments'); }

  var len = arguments.length, args = new Array(len);
  for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
  var resultSelector = isFunction(args[len - 1]) ? args.pop() : argumentsToArray;

  var parent = this;
  args.unshift(parent);
  return new ZipIterableObservable(args, resultSelector);
};

  function asObservable(source) {
    return function subscribe(o) { return source.subscribe(o); };
  }

  /**
   *  Hides the identity of an observable sequence.
   * @returns {Observable} An observable sequence that hides the identity of the source sequence.
   */
  observableProto.asObservable = function () {
    return new AnonymousObservable(asObservable(this), this);
  };

  function toArray(x) { return x.toArray(); }
  function notEmpty(x) { return x.length > 0; }

  /**
   *  Projects each element of an observable sequence into zero or more buffers which are produced based on element count information.
   * @param {Number} count Length of each buffer.
   * @param {Number} [skip] Number of elements to skip between creation of consecutive buffers. If not provided, defaults to the count.
   * @returns {Observable} An observable sequence of buffers.
   */
  observableProto.bufferWithCount = observableProto.bufferCount = function (count, skip) {
    typeof skip !== 'number' && (skip = count);
    return this.windowWithCount(count, skip)
      .flatMap(toArray)
      .filter(notEmpty);
  };

  var DematerializeObservable = (function (__super__) {
    inherits(DematerializeObservable, __super__);
    function DematerializeObservable(source) {
      this.source = source;
      __super__.call(this);
    }

    DematerializeObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new DematerializeObserver(o));
    };

    return DematerializeObservable;
  }(ObservableBase));

  var DematerializeObserver = (function (__super__) {
    inherits(DematerializeObserver, __super__);

    function DematerializeObserver(o) {
      this._o = o;
      __super__.call(this);
    }

    DematerializeObserver.prototype.next = function (x) { x.accept(this._o); };
    DematerializeObserver.prototype.error = function (e) { this._o.onError(e); };
    DematerializeObserver.prototype.completed = function () { this._o.onCompleted(); };

    return DematerializeObserver;
  }(AbstractObserver));

  /**
   * Dematerializes the explicit notification values of an observable sequence as implicit notifications.
   * @returns {Observable} An observable sequence exhibiting the behavior corresponding to the source sequence's notification values.
   */
  observableProto.dematerialize = function () {
    return new DematerializeObservable(this);
  };

  var DistinctUntilChangedObservable = (function(__super__) {
    inherits(DistinctUntilChangedObservable, __super__);
    function DistinctUntilChangedObservable(source, keyFn, comparer) {
      this.source = source;
      this.keyFn = keyFn;
      this.comparer = comparer;
      __super__.call(this);
    }

    DistinctUntilChangedObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new DistinctUntilChangedObserver(o, this.keyFn, this.comparer));
    };

    return DistinctUntilChangedObservable;
  }(ObservableBase));

  var DistinctUntilChangedObserver = (function(__super__) {
    inherits(DistinctUntilChangedObserver, __super__);
    function DistinctUntilChangedObserver(o, keyFn, comparer) {
      this.o = o;
      this.keyFn = keyFn;
      this.comparer = comparer;
      this.hasCurrentKey = false;
      this.currentKey = null;
      __super__.call(this);
    }

    DistinctUntilChangedObserver.prototype.next = function (x) {
      var key = x, comparerEquals;
      if (isFunction(this.keyFn)) {
        key = tryCatch(this.keyFn)(x);
        if (key === errorObj) { return this.o.onError(key.e); }
      }
      if (this.hasCurrentKey) {
        comparerEquals = tryCatch(this.comparer)(this.currentKey, key);
        if (comparerEquals === errorObj) { return this.o.onError(comparerEquals.e); }
      }
      if (!this.hasCurrentKey || !comparerEquals) {
        this.hasCurrentKey = true;
        this.currentKey = key;
        this.o.onNext(x);
      }
    };
    DistinctUntilChangedObserver.prototype.error = function(e) {
      this.o.onError(e);
    };
    DistinctUntilChangedObserver.prototype.completed = function () {
      this.o.onCompleted();
    };

    return DistinctUntilChangedObserver;
  }(AbstractObserver));

  /**
  *  Returns an observable sequence that contains only distinct contiguous elements according to the keyFn and the comparer.
  * @param {Function} [keyFn] A function to compute the comparison key for each element. If not provided, it projects the value.
  * @param {Function} [comparer] Equality comparer for computed key values. If not provided, defaults to an equality comparer function.
  * @returns {Observable} An observable sequence only containing the distinct contiguous elements, based on a computed key value, from the source sequence.
  */
  observableProto.distinctUntilChanged = function (keyFn, comparer) {
    comparer || (comparer = defaultComparer);
    return new DistinctUntilChangedObservable(this, keyFn, comparer);
  };

  var TapObservable = (function(__super__) {
    inherits(TapObservable,__super__);
    function TapObservable(source, observerOrOnNext, onError, onCompleted) {
      this.source = source;
      this._oN = observerOrOnNext;
      this._oE = onError;
      this._oC = onCompleted;
      __super__.call(this);
    }

    TapObservable.prototype.subscribeCore = function(o) {
      return this.source.subscribe(new InnerObserver(o, this));
    };

    inherits(InnerObserver, AbstractObserver);
    function InnerObserver(o, p) {
      this.o = o;
      this.t = !p._oN || isFunction(p._oN) ?
        observerCreate(p._oN || noop, p._oE || noop, p._oC || noop) :
        p._oN;
      this.isStopped = false;
      AbstractObserver.call(this);
    }
    InnerObserver.prototype.next = function(x) {
      var res = tryCatch(this.t.onNext).call(this.t, x);
      if (res === errorObj) { this.o.onError(res.e); }
      this.o.onNext(x);
    };
    InnerObserver.prototype.error = function(err) {
      var res = tryCatch(this.t.onError).call(this.t, err);
      if (res === errorObj) { return this.o.onError(res.e); }
      this.o.onError(err);
    };
    InnerObserver.prototype.completed = function() {
      var res = tryCatch(this.t.onCompleted).call(this.t);
      if (res === errorObj) { return this.o.onError(res.e); }
      this.o.onCompleted();
    };

    return TapObservable;
  }(ObservableBase));

  /**
  *  Invokes an action for each element in the observable sequence and invokes an action upon graceful or exceptional termination of the observable sequence.
  *  This method can be used for debugging, logging, etc. of query behavior by intercepting the message stream to run arbitrary actions for messages on the pipeline.
  * @param {Function | Observer} observerOrOnNext Action to invoke for each element in the observable sequence or an o.
  * @param {Function} [onError]  Action to invoke upon exceptional termination of the observable sequence. Used if only the observerOrOnNext parameter is also a function.
  * @param {Function} [onCompleted]  Action to invoke upon graceful termination of the observable sequence. Used if only the observerOrOnNext parameter is also a function.
  * @returns {Observable} The source sequence with the side-effecting behavior applied.
  */
  observableProto['do'] = observableProto.tap = observableProto.doAction = function (observerOrOnNext, onError, onCompleted) {
    return new TapObservable(this, observerOrOnNext, onError, onCompleted);
  };

  /**
  *  Invokes an action for each element in the observable sequence.
  *  This method can be used for debugging, logging, etc. of query behavior by intercepting the message stream to run arbitrary actions for messages on the pipeline.
  * @param {Function} onNext Action to invoke for each element in the observable sequence.
  * @param {Any} [thisArg] Object to use as this when executing callback.
  * @returns {Observable} The source sequence with the side-effecting behavior applied.
  */
  observableProto.doOnNext = observableProto.tapOnNext = function (onNext, thisArg) {
    return this.tap(typeof thisArg !== 'undefined' ? function (x) { onNext.call(thisArg, x); } : onNext);
  };

  /**
  *  Invokes an action upon exceptional termination of the observable sequence.
  *  This method can be used for debugging, logging, etc. of query behavior by intercepting the message stream to run arbitrary actions for messages on the pipeline.
  * @param {Function} onError Action to invoke upon exceptional termination of the observable sequence.
  * @param {Any} [thisArg] Object to use as this when executing callback.
  * @returns {Observable} The source sequence with the side-effecting behavior applied.
  */
  observableProto.doOnError = observableProto.tapOnError = function (onError, thisArg) {
    return this.tap(noop, typeof thisArg !== 'undefined' ? function (e) { onError.call(thisArg, e); } : onError);
  };

  /**
  *  Invokes an action upon graceful termination of the observable sequence.
  *  This method can be used for debugging, logging, etc. of query behavior by intercepting the message stream to run arbitrary actions for messages on the pipeline.
  * @param {Function} onCompleted Action to invoke upon graceful termination of the observable sequence.
  * @param {Any} [thisArg] Object to use as this when executing callback.
  * @returns {Observable} The source sequence with the side-effecting behavior applied.
  */
  observableProto.doOnCompleted = observableProto.tapOnCompleted = function (onCompleted, thisArg) {
    return this.tap(noop, null, typeof thisArg !== 'undefined' ? function () { onCompleted.call(thisArg); } : onCompleted);
  };

  var FinallyObservable = (function (__super__) {
    inherits(FinallyObservable, __super__);
    function FinallyObservable(source, fn, thisArg) {
      this.source = source;
      this._fn = bindCallback(fn, thisArg, 0);
      __super__.call(this);
    }

    FinallyObservable.prototype.subscribeCore = function (o) {
      var d = tryCatch(this.source.subscribe).call(this.source, o);
      if (d === errorObj) {
        this._fn();
        thrower(d.e);
      }

      return new FinallyDisposable(d, this._fn);
    };

    function FinallyDisposable(s, fn) {
      this.isDisposed = false;
      this._s = s;
      this._fn = fn;
    }
    FinallyDisposable.prototype.dispose = function () {
      if (!this.isDisposed) {
        var res = tryCatch(this._s.dispose).call(this._s);
        this._fn();
        res === errorObj && thrower(res.e);
      }
    };

    return FinallyObservable;

  }(ObservableBase));

  /**
   *  Invokes a specified action after the source observable sequence terminates gracefully or exceptionally.
   * @param {Function} finallyAction Action to invoke after the source observable sequence terminates.
   * @returns {Observable} Source sequence with the action-invoking termination behavior applied.
   */
  observableProto['finally'] = function (action, thisArg) {
    return new FinallyObservable(this, action, thisArg);
  };

  var IgnoreElementsObservable = (function(__super__) {
    inherits(IgnoreElementsObservable, __super__);

    function IgnoreElementsObservable(source) {
      this.source = source;
      __super__.call(this);
    }

    IgnoreElementsObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new InnerObserver(o));
    };

    function InnerObserver(o) {
      this.o = o;
      this.isStopped = false;
    }
    InnerObserver.prototype.onNext = noop;
    InnerObserver.prototype.onError = function (err) {
      if(!this.isStopped) {
        this.isStopped = true;
        this.o.onError(err);
      }
    };
    InnerObserver.prototype.onCompleted = function () {
      if(!this.isStopped) {
        this.isStopped = true;
        this.o.onCompleted();
      }
    };
    InnerObserver.prototype.dispose = function() { this.isStopped = true; };
    InnerObserver.prototype.fail = function (e) {
      if (!this.isStopped) {
        this.isStopped = true;
        this.observer.onError(e);
        return true;
      }

      return false;
    };

    return IgnoreElementsObservable;
  }(ObservableBase));

  /**
   *  Ignores all elements in an observable sequence leaving only the termination messages.
   * @returns {Observable} An empty observable sequence that signals termination, successful or exceptional, of the source sequence.
   */
  observableProto.ignoreElements = function () {
    return new IgnoreElementsObservable(this);
  };

  var MaterializeObservable = (function (__super__) {
    inherits(MaterializeObservable, __super__);
    function MaterializeObservable(source, fn) {
      this.source = source;
      __super__.call(this);
    }

    MaterializeObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new MaterializeObserver(o));
    };

    return MaterializeObservable;
  }(ObservableBase));

  var MaterializeObserver = (function (__super__) {
    inherits(MaterializeObserver, __super__);

    function MaterializeObserver(o) {
      this._o = o;
      __super__.call(this);
    }

    MaterializeObserver.prototype.next = function (x) { this._o.onNext(notificationCreateOnNext(x)) };
    MaterializeObserver.prototype.error = function (e) { this._o.onNext(notificationCreateOnError(e)); this._o.onCompleted(); };
    MaterializeObserver.prototype.completed = function () { this._o.onNext(notificationCreateOnCompleted()); this._o.onCompleted(); };

    return MaterializeObserver;
  }(AbstractObserver));

  /**
   *  Materializes the implicit notifications of an observable sequence as explicit notification values.
   * @returns {Observable} An observable sequence containing the materialized notification values from the source sequence.
   */
  observableProto.materialize = function () {
    return new MaterializeObservable(this);
  };

  /**
   *  Repeats the observable sequence a specified number of times. If the repeat count is not specified, the sequence repeats indefinitely.
   * @param {Number} [repeatCount]  Number of times to repeat the sequence. If not provided, repeats the sequence indefinitely.
   * @returns {Observable} The observable sequence producing the elements of the given sequence repeatedly.
   */
  observableProto.repeat = function (repeatCount) {
    return enumerableRepeat(this, repeatCount).concat();
  };

  /**
   *  Repeats the source observable sequence the specified number of times or until it successfully terminates. If the retry count is not specified, it retries indefinitely.
   *  Note if you encounter an error and want it to retry once, then you must use .retry(2);
   *
   * @example
   *  var res = retried = retry.repeat();
   *  var res = retried = retry.repeat(2);
   * @param {Number} [retryCount]  Number of times to retry the sequence. If not provided, retry the sequence indefinitely.
   * @returns {Observable} An observable sequence producing the elements of the given sequence repeatedly until it terminates successfully.
   */
  observableProto.retry = function (retryCount) {
    return enumerableRepeat(this, retryCount).catchError();
  };

  function repeat(value) {
    return {
      '@@iterator': function () {
        return {
          next: function () {
            return { done: false, value: value };
          }
        };
      }
    };
  }

  var RetryWhenObservable = (function(__super__) {
    function createDisposable(state) {
      return {
        isDisposed: false,
        dispose: function () {
          if (!this.isDisposed) {
            this.isDisposed = true;
            state.isDisposed = true;
          }
        }
      };
    }

    function RetryWhenObservable(source, notifier) {
      this.source = source;
      this._notifier = notifier;
      __super__.call(this);
    }

    inherits(RetryWhenObservable, __super__);

    RetryWhenObservable.prototype.subscribeCore = function (o) {
      var exceptions = new Subject(),
        notifier = new Subject(),
        handled = this._notifier(exceptions),
        notificationDisposable = handled.subscribe(notifier);

      var e = this.source['@@iterator']();

      var state = { isDisposed: false },
        lastError,
        subscription = new SerialDisposable();
      var cancelable = currentThreadScheduler.scheduleRecursive(null, function (_, recurse) {
        if (state.isDisposed) { return; }
        var currentItem = e.next();

        if (currentItem.done) {
          if (lastError) {
            o.onError(lastError);
          } else {
            o.onCompleted();
          }
          return;
        }

        // Check if promise
        var currentValue = currentItem.value;
        isPromise(currentValue) && (currentValue = observableFromPromise(currentValue));

        var outer = new SingleAssignmentDisposable();
        var inner = new SingleAssignmentDisposable();
        subscription.setDisposable(new BinaryDisposable(inner, outer));
        outer.setDisposable(currentValue.subscribe(
          function(x) { o.onNext(x); },
          function (exn) {
            inner.setDisposable(notifier.subscribe(recurse, function(ex) {
              o.onError(ex);
            }, function() {
              o.onCompleted();
            }));

            exceptions.onNext(exn);
            outer.dispose();
          },
          function() { o.onCompleted(); }));
      });

      return new NAryDisposable([notificationDisposable, subscription, cancelable, createDisposable(state)]);
    };

    return RetryWhenObservable;
  }(ObservableBase));

  observableProto.retryWhen = function (notifier) {
    return new RetryWhenObservable(repeat(this), notifier);
  };

  function repeat(value) {
    return {
      '@@iterator': function () {
        return {
          next: function () {
            return { done: false, value: value };
          }
        };
      }
    };
  }

  var RepeatWhenObservable = (function(__super__) {
    function createDisposable(state) {
      return {
        isDisposed: false,
        dispose: function () {
          if (!this.isDisposed) {
            this.isDisposed = true;
            state.isDisposed = true;
          }
        }
      };
    }

    function RepeatWhenObservable(source, notifier) {
      this.source = source;
      this._notifier = notifier;
      __super__.call(this);
    }

    inherits(RepeatWhenObservable, __super__);

    RepeatWhenObservable.prototype.subscribeCore = function (o) {
      var completions = new Subject(),
        notifier = new Subject(),
        handled = this._notifier(completions),
        notificationDisposable = handled.subscribe(notifier);

      var e = this.source['@@iterator']();

      var state = { isDisposed: false },
        lastError,
        subscription = new SerialDisposable();
      var cancelable = currentThreadScheduler.scheduleRecursive(null, function (_, recurse) {
        if (state.isDisposed) { return; }
        var currentItem = e.next();

        if (currentItem.done) {
          if (lastError) {
            o.onError(lastError);
          } else {
            o.onCompleted();
          }
          return;
        }

        // Check if promise
        var currentValue = currentItem.value;
        isPromise(currentValue) && (currentValue = observableFromPromise(currentValue));

        var outer = new SingleAssignmentDisposable();
        var inner = new SingleAssignmentDisposable();
        subscription.setDisposable(new BinaryDisposable(inner, outer));
        outer.setDisposable(currentValue.subscribe(
          function(x) { o.onNext(x); },
          function (exn) { o.onError(exn); },
          function() {
            inner.setDisposable(notifier.subscribe(recurse, function(ex) {
              o.onError(ex);
            }, function() {
              o.onCompleted();
            }));

            completions.onNext(null);
            outer.dispose();
          }));
      });

      return new NAryDisposable([notificationDisposable, subscription, cancelable, createDisposable(state)]);
    };

    return RepeatWhenObservable;
  }(ObservableBase));

  observableProto.repeatWhen = function (notifier) {
    return new RepeatWhenObservable(repeat(this), notifier);
  };

  var ScanObservable = (function(__super__) {
    inherits(ScanObservable, __super__);
    function ScanObservable(source, accumulator, hasSeed, seed) {
      this.source = source;
      this.accumulator = accumulator;
      this.hasSeed = hasSeed;
      this.seed = seed;
      __super__.call(this);
    }

    ScanObservable.prototype.subscribeCore = function(o) {
      return this.source.subscribe(new ScanObserver(o,this));
    };

    return ScanObservable;
  }(ObservableBase));

  var ScanObserver = (function (__super__) {
    inherits(ScanObserver, __super__);
    function ScanObserver(o, parent) {
      this._o = o;
      this._p = parent;
      this._fn = parent.accumulator;
      this._hs = parent.hasSeed;
      this._s = parent.seed;
      this._ha = false;
      this._a = null;
      this._hv = false;
      this._i = 0;
      __super__.call(this);
    }

    ScanObserver.prototype.next = function (x) {
      !this._hv && (this._hv = true);
      if (this._ha) {
        this._a = tryCatch(this._fn)(this._a, x, this._i, this._p);
      } else {
        this._a = this._hs ? tryCatch(this._fn)(this._s, x, this._i, this._p) : x;
        this._ha = true;
      }
      if (this._a === errorObj) { return this._o.onError(this._a.e); }
      this._o.onNext(this._a);
      this._i++;
    };

    ScanObserver.prototype.error = function (e) {
      this._o.onError(e);
    };

    ScanObserver.prototype.completed = function () {
      !this._hv && this._hs && this._o.onNext(this._s);
      this._o.onCompleted();
    };

    return ScanObserver;
  }(AbstractObserver));

  /**
  *  Applies an accumulator function over an observable sequence and returns each intermediate result. The optional seed value is used as the initial accumulator value.
  *  For aggregation behavior with no intermediate results, see Observable.aggregate.
  * @param {Mixed} [seed] The initial accumulator value.
  * @param {Function} accumulator An accumulator function to be invoked on each element.
  * @returns {Observable} An observable sequence containing the accumulated values.
  */
  observableProto.scan = function () {
    var hasSeed = false, seed, accumulator = arguments[0];
    if (arguments.length === 2) {
      hasSeed = true;
      seed = arguments[1];
    }
    return new ScanObservable(this, accumulator, hasSeed, seed);
  };

  var SkipLastObservable = (function (__super__) {
    inherits(SkipLastObservable, __super__);
    function SkipLastObservable(source, c) {
      this.source = source;
      this._c = c;
      __super__.call(this);
    }

    SkipLastObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new SkipLastObserver(o, this._c));
    };

    return SkipLastObservable;
  }(ObservableBase));

  var SkipLastObserver = (function (__super__) {
    inherits(SkipLastObserver, __super__);
    function SkipLastObserver(o, c) {
      this._o = o;
      this._c = c;
      this._q = [];
      __super__.call(this);
    }

    SkipLastObserver.prototype.next = function (x) {
      this._q.push(x);
      this._q.length > this._c && this._o.onNext(this._q.shift());
    };

    SkipLastObserver.prototype.error = function (e) {
      this._o.onError(e);
    };

    SkipLastObserver.prototype.completed = function () {
      this._o.onCompleted();
    };

    return SkipLastObserver;
  }(AbstractObserver));

  /**
   *  Bypasses a specified number of elements at the end of an observable sequence.
   * @description
   *  This operator accumulates a queue with a length enough to store the first `count` elements. As more elements are
   *  received, elements are taken from the front of the queue and produced on the result sequence. This causes elements to be delayed.
   * @param count Number of elements to bypass at the end of the source sequence.
   * @returns {Observable} An observable sequence containing the source sequence elements except for the bypassed ones at the end.
   */
  observableProto.skipLast = function (count) {
    if (count < 0) { throw new ArgumentOutOfRangeError(); }
    return new SkipLastObservable(this, count);
  };

  /**
   *  Prepends a sequence of values to an observable sequence with an optional scheduler and an argument list of values to prepend.
   *  @example
   *  var res = source.startWith(1, 2, 3);
   *  var res = source.startWith(Rx.Scheduler.timeout, 1, 2, 3);
   * @param {Arguments} args The specified values to prepend to the observable sequence
   * @returns {Observable} The source sequence prepended with the specified values.
   */
  observableProto.startWith = function () {
    var values, scheduler, start = 0;
    if (!!arguments.length && isScheduler(arguments[0])) {
      scheduler = arguments[0];
      start = 1;
    } else {
      scheduler = immediateScheduler;
    }
    for(var args = [], i = start, len = arguments.length; i < len; i++) { args.push(arguments[i]); }
    return observableConcat.apply(null, [observableFromArray(args, scheduler), this]);
  };

  var TakeLastObserver = (function (__super__) {
    inherits(TakeLastObserver, __super__);
    function TakeLastObserver(o, c) {
      this._o = o;
      this._c = c;
      this._q = [];
      __super__.call(this);
    }

    TakeLastObserver.prototype.next = function (x) {
      this._q.push(x);
      this._q.length > this._c && this._q.shift();
    };

    TakeLastObserver.prototype.error = function (e) {
      this._o.onError(e);
    };

    TakeLastObserver.prototype.completed = function () {
      while (this._q.length > 0) { this._o.onNext(this._q.shift()); }
      this._o.onCompleted();
    };

    return TakeLastObserver;
  }(AbstractObserver));

  /**
   *  Returns a specified number of contiguous elements from the end of an observable sequence.
   * @description
   *  This operator accumulates a buffer with a length enough to store elements count elements. Upon completion of
   *  the source sequence, this buffer is drained on the result sequence. This causes the elements to be delayed.
   * @param {Number} count Number of elements to take from the end of the source sequence.
   * @returns {Observable} An observable sequence containing the specified number of elements from the end of the source sequence.
   */
  observableProto.takeLast = function (count) {
    if (count < 0) { throw new ArgumentOutOfRangeError(); }
    var source = this;
    return new AnonymousObservable(function (o) {
      return source.subscribe(new TakeLastObserver(o, count));
    }, source);
  };

  var TakeLastBufferObserver = (function (__super__) {
    inherits(TakeLastBufferObserver, __super__);
    function TakeLastBufferObserver(o, c) {
      this._o = o;
      this._c = c;
      this._q = [];
      __super__.call(this);
    }

    TakeLastBufferObserver.prototype.next = function (x) {
      this._q.push(x);
      this._q.length > this._c && this._q.shift();
    };

    TakeLastBufferObserver.prototype.error = function (e) {
      this._o.onError(e);
    };

    TakeLastBufferObserver.prototype.completed = function () {
      this._o.onNext(this._q);
      this._o.onCompleted();
    };

    return TakeLastBufferObserver;
  }(AbstractObserver));

  /**
   *  Returns an array with the specified number of contiguous elements from the end of an observable sequence.
   *
   * @description
   *  This operator accumulates a buffer with a length enough to store count elements. Upon completion of the
   *  source sequence, this buffer is produced on the result sequence.
   * @param {Number} count Number of elements to take from the end of the source sequence.
   * @returns {Observable} An observable sequence containing a single array with the specified number of elements from the end of the source sequence.
   */
  observableProto.takeLastBuffer = function (count) {
    if (count < 0) { throw new ArgumentOutOfRangeError(); }
    var source = this;
    return new AnonymousObservable(function (o) {
      return source.subscribe(new TakeLastBufferObserver(o, count));
    }, source);
  };

  /**
   *  Projects each element of an observable sequence into zero or more windows which are produced based on element count information.
   * @param {Number} count Length of each window.
   * @param {Number} [skip] Number of elements to skip between creation of consecutive windows. If not specified, defaults to the count.
   * @returns {Observable} An observable sequence of windows.
   */
  observableProto.windowWithCount = observableProto.windowCount = function (count, skip) {
    var source = this;
    +count || (count = 0);
    Math.abs(count) === Infinity && (count = 0);
    if (count <= 0) { throw new ArgumentOutOfRangeError(); }
    skip == null && (skip = count);
    +skip || (skip = 0);
    Math.abs(skip) === Infinity && (skip = 0);

    if (skip <= 0) { throw new ArgumentOutOfRangeError(); }
    return new AnonymousObservable(function (observer) {
      var m = new SingleAssignmentDisposable(),
        refCountDisposable = new RefCountDisposable(m),
        n = 0,
        q = [];

      function createWindow () {
        var s = new Subject();
        q.push(s);
        observer.onNext(addRef(s, refCountDisposable));
      }

      createWindow();

      m.setDisposable(source.subscribe(
        function (x) {
          for (var i = 0, len = q.length; i < len; i++) { q[i].onNext(x); }
          var c = n - count + 1;
          c >= 0 && c % skip === 0 && q.shift().onCompleted();
          ++n % skip === 0 && createWindow();
        },
        function (e) {
          while (q.length > 0) { q.shift().onError(e); }
          observer.onError(e);
        },
        function () {
          while (q.length > 0) { q.shift().onCompleted(); }
          observer.onCompleted();
        }
      ));
      return refCountDisposable;
    }, source);
  };

  function concatMap(source, selector, thisArg) {
    var selectorFunc = bindCallback(selector, thisArg, 3);
    return source.map(function (x, i) {
      var result = selectorFunc(x, i, source);
      isPromise(result) && (result = observableFromPromise(result));
      (isArrayLike(result) || isIterable(result)) && (result = observableFrom(result));
      return result;
    }).concatAll();
  }

  /**
   *  One of the Following:
   *  Projects each element of an observable sequence to an observable sequence and merges the resulting observable sequences into one observable sequence.
   *
   * @example
   *  var res = source.concatMap(function (x) { return Rx.Observable.range(0, x); });
   *  Or:
   *  Projects each element of an observable sequence to an observable sequence, invokes the result selector for the source element and each of the corresponding inner sequence's elements, and merges the results into one observable sequence.
   *
   *  var res = source.concatMap(function (x) { return Rx.Observable.range(0, x); }, function (x, y) { return x + y; });
   *  Or:
   *  Projects each element of the source observable sequence to the other observable sequence and merges the resulting observable sequences into one observable sequence.
   *
   *  var res = source.concatMap(Rx.Observable.fromArray([1,2,3]));
   * @param {Function} selector A transform function to apply to each element or an observable sequence to project each element from the
   * source sequence onto which could be either an observable or Promise.
   * @param {Function} [resultSelector]  A transform function to apply to each element of the intermediate sequence.
   * @returns {Observable} An observable sequence whose elements are the result of invoking the one-to-many transform function collectionSelector on each element of the input sequence and then mapping each of those sequence elements and their corresponding source element to a result element.
   */
  observableProto.selectConcat = observableProto.concatMap = function (selector, resultSelector, thisArg) {
    if (isFunction(selector) && isFunction(resultSelector)) {
      return this.concatMap(function (x, i) {
        var selectorResult = selector(x, i);
        isPromise(selectorResult) && (selectorResult = observableFromPromise(selectorResult));
        (isArrayLike(selectorResult) || isIterable(selectorResult)) && (selectorResult = observableFrom(selectorResult));

        return selectorResult.map(function (y, i2) {
          return resultSelector(x, y, i, i2);
        });
      });
    }
    return isFunction(selector) ?
      concatMap(this, selector, thisArg) :
      concatMap(this, function () { return selector; });
  };

  /**
   * Projects each notification of an observable sequence to an observable sequence and concats the resulting observable sequences into one observable sequence.
   * @param {Function} onNext A transform function to apply to each element; the second parameter of the function represents the index of the source element.
   * @param {Function} onError A transform function to apply when an error occurs in the source sequence.
   * @param {Function} onCompleted A transform function to apply when the end of the source sequence is reached.
   * @param {Any} [thisArg] An optional "this" to use to invoke each transform.
   * @returns {Observable} An observable sequence whose elements are the result of invoking the one-to-many transform function corresponding to each notification in the input sequence.
   */
  observableProto.concatMapObserver = observableProto.selectConcatObserver = function(onNext, onError, onCompleted, thisArg) {
    var source = this,
        onNextFunc = bindCallback(onNext, thisArg, 2),
        onErrorFunc = bindCallback(onError, thisArg, 1),
        onCompletedFunc = bindCallback(onCompleted, thisArg, 0);
    return new AnonymousObservable(function (observer) {
      var index = 0;
      return source.subscribe(
        function (x) {
          var result;
          try {
            result = onNextFunc(x, index++);
          } catch (e) {
            observer.onError(e);
            return;
          }
          isPromise(result) && (result = observableFromPromise(result));
          observer.onNext(result);
        },
        function (err) {
          var result;
          try {
            result = onErrorFunc(err);
          } catch (e) {
            observer.onError(e);
            return;
          }
          isPromise(result) && (result = observableFromPromise(result));
          observer.onNext(result);
          observer.onCompleted();
        },
        function () {
          var result;
          try {
            result = onCompletedFunc();
          } catch (e) {
            observer.onError(e);
            return;
          }
          isPromise(result) && (result = observableFromPromise(result));
          observer.onNext(result);
          observer.onCompleted();
        });
    }, this).concatAll();
  };

  var DefaultIfEmptyObserver = (function (__super__) {
    inherits(DefaultIfEmptyObserver, __super__);
    function DefaultIfEmptyObserver(o, d) {
      this._o = o;
      this._d = d;
      this._f = false;
      __super__.call(this);
    }

    DefaultIfEmptyObserver.prototype.next = function (x) {
      this._f = true;
      this._o.onNext(x);
    };

    DefaultIfEmptyObserver.prototype.error = function (e) {
      this._o.onError(e);
    };

    DefaultIfEmptyObserver.prototype.completed = function () {
      !this._f && this._o.onNext(this._d);
      this._o.onCompleted();
    };

    return DefaultIfEmptyObserver;
  }(AbstractObserver));

  /**
   *  Returns the elements of the specified sequence or the specified value in a singleton sequence if the sequence is empty.
   *
   *  var res = obs = xs.defaultIfEmpty();
   *  2 - obs = xs.defaultIfEmpty(false);
   *
   * @memberOf Observable#
   * @param defaultValue The value to return if the sequence is empty. If not provided, this defaults to null.
   * @returns {Observable} An observable sequence that contains the specified default value if the source is empty; otherwise, the elements of the source itself.
   */
    observableProto.defaultIfEmpty = function (defaultValue) {
      var source = this;
      defaultValue === undefined && (defaultValue = null);
      return new AnonymousObservable(function (o) {
        return source.subscribe(new DefaultIfEmptyObserver(o, defaultValue));
      }, source);
    };

  // Swap out for Array.findIndex
  function arrayIndexOfComparer(array, item, comparer) {
    for (var i = 0, len = array.length; i < len; i++) {
      if (comparer(array[i], item)) { return i; }
    }
    return -1;
  }

  function HashSet(comparer) {
    this.comparer = comparer;
    this.set = [];
  }
  HashSet.prototype.push = function(value) {
    var retValue = arrayIndexOfComparer(this.set, value, this.comparer) === -1;
    retValue && this.set.push(value);
    return retValue;
  };

  var DistinctObservable = (function (__super__) {
    inherits(DistinctObservable, __super__);
    function DistinctObservable(source, keyFn, cmpFn) {
      this.source = source;
      this._keyFn = keyFn;
      this._cmpFn = cmpFn;
      __super__.call(this);
    }

    DistinctObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new DistinctObserver(o, this._keyFn, this._cmpFn));
    };

    return DistinctObservable;
  }(ObservableBase));

  var DistinctObserver = (function (__super__) {
    inherits(DistinctObserver, __super__);
    function DistinctObserver(o, keyFn, cmpFn) {
      this._o = o;
      this._keyFn = keyFn;
      this._h = new HashSet(cmpFn);
      __super__.call(this);
    }

    DistinctObserver.prototype.next = function (x) {
      var key = x;
      if (isFunction(this._keyFn)) {
        key = tryCatch(this._keyFn)(x);
        if (key === errorObj) { return this._o.onError(key.e); }
      }
      this._h.push(key) && this._o.onNext(x);
    };

    DistinctObserver.prototype.error = function (e) { this._o.onError(e); };
    DistinctObserver.prototype.completed = function () { this._o.onCompleted(); };

    return DistinctObserver;
  }(AbstractObserver));

  /**
   *  Returns an observable sequence that contains only distinct elements according to the keySelector and the comparer.
   *  Usage of this operator should be considered carefully due to the maintenance of an internal lookup structure which can grow large.
   *
   * @example
   *  var res = obs = xs.distinct();
   *  2 - obs = xs.distinct(function (x) { return x.id; });
   *  2 - obs = xs.distinct(function (x) { return x.id; }, function (a,b) { return a === b; });
   * @param {Function} [keySelector]  A function to compute the comparison key for each element.
   * @param {Function} [comparer]  Used to compare items in the collection.
   * @returns {Observable} An observable sequence only containing the distinct elements, based on a computed key value, from the source sequence.
   */
  observableProto.distinct = function (keySelector, comparer) {
    comparer || (comparer = defaultComparer);
    return new DistinctObservable(this, keySelector, comparer);
  };

  /**
   *  Groups the elements of an observable sequence according to a specified key selector function and comparer and selects the resulting elements by using a specified function.
   *
   * @example
   *  var res = observable.groupBy(function (x) { return x.id; });
   *  2 - observable.groupBy(function (x) { return x.id; }), function (x) { return x.name; });
   *  3 - observable.groupBy(function (x) { return x.id; }), function (x) { return x.name; }, function (x) { return x.toString(); });
   * @param {Function} keySelector A function to extract the key for each element.
   * @param {Function} [elementSelector]  A function to map each source element to an element in an observable group.
   * @returns {Observable} A sequence of observable groups, each of which corresponds to a unique key value, containing all elements that share that same key value.
   */
  observableProto.groupBy = function (keySelector, elementSelector) {
    return this.groupByUntil(keySelector, elementSelector, observableNever);
  };

    /**
     *  Groups the elements of an observable sequence according to a specified key selector function.
     *  A duration selector function is used to control the lifetime of groups. When a group expires, it receives an OnCompleted notification. When a new element with the same
     *  key value as a reclaimed group occurs, the group will be reborn with a new lifetime request.
     *
     * @example
     *  var res = observable.groupByUntil(function (x) { return x.id; }, null,  function () { return Rx.Observable.never(); });
     *  2 - observable.groupBy(function (x) { return x.id; }), function (x) { return x.name; },  function () { return Rx.Observable.never(); });
     *  3 - observable.groupBy(function (x) { return x.id; }), function (x) { return x.name; },  function () { return Rx.Observable.never(); }, function (x) { return x.toString(); });
     * @param {Function} keySelector A function to extract the key for each element.
     * @param {Function} durationSelector A function to signal the expiration of a group.
     * @returns {Observable}
     *  A sequence of observable groups, each of which corresponds to a unique key value, containing all elements that share that same key value.
     *  If a group's lifetime expires, a new group with the same key value can be created once an element with such a key value is encoutered.
     *
     */
    observableProto.groupByUntil = function (keySelector, elementSelector, durationSelector) {
      var source = this;
      return new AnonymousObservable(function (o) {
        var map = new Map(),
          groupDisposable = new CompositeDisposable(),
          refCountDisposable = new RefCountDisposable(groupDisposable),
          handleError = function (e) { return function (item) { item.onError(e); }; };

        groupDisposable.add(
          source.subscribe(function (x) {
            var key = tryCatch(keySelector)(x);
            if (key === errorObj) {
              map.forEach(handleError(key.e));
              return o.onError(key.e);
            }

            var fireNewMapEntry = false, writer = map.get(key);
            if (writer === undefined) {
              writer = new Subject();
              map.set(key, writer);
              fireNewMapEntry = true;
            }

            if (fireNewMapEntry) {
              var group = new GroupedObservable(key, writer, refCountDisposable),
                durationGroup = new GroupedObservable(key, writer);
              var duration = tryCatch(durationSelector)(durationGroup);
              if (duration === errorObj) {
                map.forEach(handleError(duration.e));
                return o.onError(duration.e);
              }

              o.onNext(group);

              var md = new SingleAssignmentDisposable();
              groupDisposable.add(md);

              md.setDisposable(duration.take(1).subscribe(
                noop,
                function (e) {
                  map.forEach(handleError(e));
                  o.onError(e);
                },
                function () {
                  if (map['delete'](key)) { writer.onCompleted(); }
                  groupDisposable.remove(md);
                }));
            }

            var element = x;
            if (isFunction(elementSelector)) {
              element = tryCatch(elementSelector)(x);
              if (element === errorObj) {
                map.forEach(handleError(element.e));
                return o.onError(element.e);
              }
            }

            writer.onNext(element);
        }, function (e) {
          map.forEach(handleError(e));
          o.onError(e);
        }, function () {
          map.forEach(function (item) { item.onCompleted(); });
          o.onCompleted();
        }));

      return refCountDisposable;
    }, source);
  };

  var MapObservable = (function (__super__) {
    inherits(MapObservable, __super__);

    function MapObservable(source, selector, thisArg) {
      this.source = source;
      this.selector = bindCallback(selector, thisArg, 3);
      __super__.call(this);
    }

    function innerMap(selector, self) {
      return function (x, i, o) { return selector.call(this, self.selector(x, i, o), i, o); };
    }

    MapObservable.prototype.internalMap = function (selector, thisArg) {
      return new MapObservable(this.source, innerMap(selector, this), thisArg);
    };

    MapObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new InnerObserver(o, this.selector, this));
    };

    inherits(InnerObserver, AbstractObserver);
    function InnerObserver(o, selector, source) {
      this.o = o;
      this.selector = selector;
      this.source = source;
      this.i = 0;
      AbstractObserver.call(this);
    }

    InnerObserver.prototype.next = function(x) {
      var result = tryCatch(this.selector)(x, this.i++, this.source);
      if (result === errorObj) { return this.o.onError(result.e); }
      this.o.onNext(result);
    };

    InnerObserver.prototype.error = function (e) {
      this.o.onError(e);
    };

    InnerObserver.prototype.completed = function () {
      this.o.onCompleted();
    };

    return MapObservable;

  }(ObservableBase));

  /**
  * Projects each element of an observable sequence into a new form by incorporating the element's index.
  * @param {Function} selector A transform function to apply to each source element; the second parameter of the function represents the index of the source element.
  * @param {Any} [thisArg] Object to use as this when executing callback.
  * @returns {Observable} An observable sequence whose elements are the result of invoking the transform function on each element of source.
  */
  observableProto.map = observableProto.select = function (selector, thisArg) {
    var selectorFn = typeof selector === 'function' ? selector : function () { return selector; };
    return this instanceof MapObservable ?
      this.internalMap(selectorFn, thisArg) :
      new MapObservable(this, selectorFn, thisArg);
  };

  function plucker(args, len) {
    return function mapper(x) {
      var currentProp = x;
      for (var i = 0; i < len; i++) {
        var p = currentProp[args[i]];
        if (typeof p !== 'undefined') {
          currentProp = p;
        } else {
          return undefined;
        }
      }
      return currentProp;
    };
  }

  /**
   * Retrieves the value of a specified nested property from all elements in
   * the Observable sequence.
   * @param {Arguments} arguments The nested properties to pluck.
   * @returns {Observable} Returns a new Observable sequence of property values.
   */
  observableProto.pluck = function () {
    var len = arguments.length, args = new Array(len);
    if (len === 0) { throw new Error('List of properties cannot be empty.'); }
    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
    return this.map(plucker(args, len));
  };

observableProto.flatMap = observableProto.selectMany = observableProto.mergeMap = function(selector, resultSelector, thisArg) {
    return new FlatMapObservable(this, selector, resultSelector, thisArg).mergeAll();
};

  /**
   * Projects each notification of an observable sequence to an observable sequence and merges the resulting observable sequences into one observable sequence.
   * @param {Function} onNext A transform function to apply to each element; the second parameter of the function represents the index of the source element.
   * @param {Function} onError A transform function to apply when an error occurs in the source sequence.
   * @param {Function} onCompleted A transform function to apply when the end of the source sequence is reached.
   * @param {Any} [thisArg] An optional "this" to use to invoke each transform.
   * @returns {Observable} An observable sequence whose elements are the result of invoking the one-to-many transform function corresponding to each notification in the input sequence.
   */
  observableProto.flatMapObserver = observableProto.selectManyObserver = function (onNext, onError, onCompleted, thisArg) {
    var source = this;
    return new AnonymousObservable(function (observer) {
      var index = 0;

      return source.subscribe(
        function (x) {
          var result;
          try {
            result = onNext.call(thisArg, x, index++);
          } catch (e) {
            observer.onError(e);
            return;
          }
          isPromise(result) && (result = observableFromPromise(result));
          observer.onNext(result);
        },
        function (err) {
          var result;
          try {
            result = onError.call(thisArg, err);
          } catch (e) {
            observer.onError(e);
            return;
          }
          isPromise(result) && (result = observableFromPromise(result));
          observer.onNext(result);
          observer.onCompleted();
        },
        function () {
          var result;
          try {
            result = onCompleted.call(thisArg);
          } catch (e) {
            observer.onError(e);
            return;
          }
          isPromise(result) && (result = observableFromPromise(result));
          observer.onNext(result);
          observer.onCompleted();
        });
    }, source).mergeAll();
  };

observableProto.flatMapLatest = observableProto.switchMap = function(selector, resultSelector, thisArg) {
    return new FlatMapObservable(this, selector, resultSelector, thisArg).switchLatest();
};

  var SkipObservable = (function(__super__) {
    inherits(SkipObservable, __super__);
    function SkipObservable(source, count) {
      this.source = source;
      this._count = count;
      __super__.call(this);
    }

    SkipObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new SkipObserver(o, this._count));
    };

    function SkipObserver(o, c) {
      this._o = o;
      this._r = c;
      AbstractObserver.call(this);
    }

    inherits(SkipObserver, AbstractObserver);

    SkipObserver.prototype.next = function (x) {
      if (this._r <= 0) {
        this._o.onNext(x);
      } else {
        this._r--;
      }
    };
    SkipObserver.prototype.error = function(e) { this._o.onError(e); };
    SkipObserver.prototype.completed = function() { this._o.onCompleted(); };

    return SkipObservable;
  }(ObservableBase));

  /**
   * Bypasses a specified number of elements in an observable sequence and then returns the remaining elements.
   * @param {Number} count The number of elements to skip before returning the remaining elements.
   * @returns {Observable} An observable sequence that contains the elements that occur after the specified index in the input sequence.
   */
  observableProto.skip = function (count) {
    if (count < 0) { throw new ArgumentOutOfRangeError(); }
    return new SkipObservable(this, count);
  };

  var SkipWhileObservable = (function (__super__) {
    inherits(SkipWhileObservable, __super__);
    function SkipWhileObservable(source, fn) {
      this.source = source;
      this._fn = fn;
      __super__.call(this);
    }

    SkipWhileObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new SkipWhileObserver(o, this));
    };

    return SkipWhileObservable;
  }(ObservableBase));

  var SkipWhileObserver = (function (__super__) {
    inherits(SkipWhileObserver, __super__);

    function SkipWhileObserver(o, p) {
      this._o = o;
      this._p = p;
      this._i = 0;
      this._r = false;
      __super__.call(this);
    }

    SkipWhileObserver.prototype.next = function (x) {
      if (!this._r) {
        var res = tryCatch(this._p._fn)(x, this._i++, this._p);
        if (res === errorObj) { return this._o.onError(res.e); }
        this._r = !res;
      }
      this._r && this._o.onNext(x);
    };
    SkipWhileObserver.prototype.error = function (e) { this._o.onError(e); };
    SkipWhileObserver.prototype.completed = function () { this._o.onCompleted(); };

    return SkipWhileObserver;
  }(AbstractObserver));

  /**
   *  Bypasses elements in an observable sequence as long as a specified condition is true and then returns the remaining elements.
   *  The element's index is used in the logic of the predicate function.
   *
   *  var res = source.skipWhile(function (value) { return value < 10; });
   *  var res = source.skipWhile(function (value, index) { return value < 10 || index < 10; });
   * @param {Function} predicate A function to test each element for a condition; the second parameter of the function represents the index of the source element.
   * @param {Any} [thisArg] Object to use as this when executing callback.
   * @returns {Observable} An observable sequence that contains the elements from the input sequence starting at the first element in the linear series that does not pass the test specified by predicate.
   */
  observableProto.skipWhile = function (predicate, thisArg) {
    var fn = bindCallback(predicate, thisArg, 3);
    return new SkipWhileObservable(this, fn);
  };

  var TakeObservable = (function(__super__) {
    inherits(TakeObservable, __super__);
    function TakeObservable(source, count) {
      this.source = source;
      this._count = count;
      __super__.call(this);
    }

    TakeObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new TakeObserver(o, this._count));
    };

    function TakeObserver(o, c) {
      this._o = o;
      this._c = c;
      this._r = c;
      AbstractObserver.call(this);
    }

    inherits(TakeObserver, AbstractObserver);

    TakeObserver.prototype.next = function (x) {
      if (this._r-- > 0) {
        this._o.onNext(x);
        this._r <= 0 && this._o.onCompleted();
      }
    };

    TakeObserver.prototype.error = function (e) { this._o.onError(e); };
    TakeObserver.prototype.completed = function () { this._o.onCompleted(); };

    return TakeObservable;
  }(ObservableBase));

  /**
   *  Returns a specified number of contiguous elements from the start of an observable sequence, using the specified scheduler for the edge case of take(0).
   * @param {Number} count The number of elements to return.
   * @param {Scheduler} [scheduler] Scheduler used to produce an OnCompleted message in case <paramref name="count count</paramref> is set to 0.
   * @returns {Observable} An observable sequence that contains the specified number of elements from the start of the input sequence.
   */
  observableProto.take = function (count, scheduler) {
    if (count < 0) { throw new ArgumentOutOfRangeError(); }
    if (count === 0) { return observableEmpty(scheduler); }
    return new TakeObservable(this, count);
  };

  var TakeWhileObservable = (function (__super__) {
    inherits(TakeWhileObservable, __super__);
    function TakeWhileObservable(source, fn) {
      this.source = source;
      this._fn = fn;
      __super__.call(this);
    }

    TakeWhileObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new TakeWhileObserver(o, this));
    };

    return TakeWhileObservable;
  }(ObservableBase));

  var TakeWhileObserver = (function (__super__) {
    inherits(TakeWhileObserver, __super__);

    function TakeWhileObserver(o, p) {
      this._o = o;
      this._p = p;
      this._i = 0;
      this._r = true;
      __super__.call(this);
    }

    TakeWhileObserver.prototype.next = function (x) {
      if (this._r) {
        this._r = tryCatch(this._p._fn)(x, this._i++, this._p);
        if (this._r === errorObj) { return this._o.onError(this._r.e); }
      }
      if (this._r) {
        this._o.onNext(x);
      } else {
        this._o.onCompleted();
      }
    };
    TakeWhileObserver.prototype.error = function (e) { this._o.onError(e); };
    TakeWhileObserver.prototype.completed = function () { this._o.onCompleted(); };

    return TakeWhileObserver;
  }(AbstractObserver));

  /**
   *  Returns elements from an observable sequence as long as a specified condition is true.
   *  The element's index is used in the logic of the predicate function.
   * @param {Function} predicate A function to test each element for a condition; the second parameter of the function represents the index of the source element.
   * @param {Any} [thisArg] Object to use as this when executing callback.
   * @returns {Observable} An observable sequence that contains the elements from the input sequence that occur before the element at which the test no longer passes.
   */
  observableProto.takeWhile = function (predicate, thisArg) {
    var fn = bindCallback(predicate, thisArg, 3);
    return new TakeWhileObservable(this, fn);
  };

  var FilterObservable = (function (__super__) {
    inherits(FilterObservable, __super__);

    function FilterObservable(source, predicate, thisArg) {
      this.source = source;
      this.predicate = bindCallback(predicate, thisArg, 3);
      __super__.call(this);
    }

    FilterObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new InnerObserver(o, this.predicate, this));
    };

    function innerPredicate(predicate, self) {
      return function(x, i, o) { return self.predicate(x, i, o) && predicate.call(this, x, i, o); }
    }

    FilterObservable.prototype.internalFilter = function(predicate, thisArg) {
      return new FilterObservable(this.source, innerPredicate(predicate, this), thisArg);
    };

    inherits(InnerObserver, AbstractObserver);
    function InnerObserver(o, predicate, source) {
      this.o = o;
      this.predicate = predicate;
      this.source = source;
      this.i = 0;
      AbstractObserver.call(this);
    }

    InnerObserver.prototype.next = function(x) {
      var shouldYield = tryCatch(this.predicate)(x, this.i++, this.source);
      if (shouldYield === errorObj) {
        return this.o.onError(shouldYield.e);
      }
      shouldYield && this.o.onNext(x);
    };

    InnerObserver.prototype.error = function (e) {
      this.o.onError(e);
    };

    InnerObserver.prototype.completed = function () {
      this.o.onCompleted();
    };

    return FilterObservable;

  }(ObservableBase));

  /**
  *  Filters the elements of an observable sequence based on a predicate by incorporating the element's index.
  * @param {Function} predicate A function to test each source element for a condition; the second parameter of the function represents the index of the source element.
  * @param {Any} [thisArg] Object to use as this when executing callback.
  * @returns {Observable} An observable sequence that contains elements from the input sequence that satisfy the condition.
  */
  observableProto.filter = observableProto.where = function (predicate, thisArg) {
    return this instanceof FilterObservable ? this.internalFilter(predicate, thisArg) :
      new FilterObservable(this, predicate, thisArg);
  };

  var ExtremaByObservable = (function (__super__) {
    inherits(ExtremaByObservable, __super__);
    function ExtremaByObservable(source, k, c) {
      this.source = source;
      this._k = k;
      this._c = c;
      __super__.call(this);
    }

    ExtremaByObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new ExtremaByObserver(o, this._k, this._c));
    };

    return ExtremaByObservable;
  }(ObservableBase));

  var ExtremaByObserver = (function (__super__) {
    inherits(ExtremaByObserver, __super__);
    function ExtremaByObserver(o, k, c) {
      this._o = o;
      this._k = k;
      this._c = c;
      this._v = null;
      this._hv = false;
      this._l = [];
      __super__.call(this);
    }

    ExtremaByObserver.prototype.next = function (x) {
      var key = tryCatch(this._k)(x);
      if (key === errorObj) { return this._o.onError(key.e); }
      var comparison = 0;
      if (!this._hv) {
        this._hv = true;
        this._v = key;
      } else {
        comparison = tryCatch(this._c)(key, this._v);
        if (comparison === errorObj) { return this._o.onError(comparison.e); }
      }
      if (comparison > 0) {
        this._v = key;
        this._l = [];
      }
      if (comparison >= 0) { this._l.push(x); }
    };

    ExtremaByObserver.prototype.error = function (e) {
      this._o.onError(e);
    };

    ExtremaByObserver.prototype.completed = function () {
      this._o.onNext(this._l);
      this._o.onCompleted();
    };

    return ExtremaByObserver;
  }(AbstractObserver));

  function firstOnly(x) {
    if (x.length === 0) { throw new EmptyError(); }
    return x[0];
  }

  var ReduceObservable = (function(__super__) {
    inherits(ReduceObservable, __super__);
    function ReduceObservable(source, accumulator, hasSeed, seed) {
      this.source = source;
      this.accumulator = accumulator;
      this.hasSeed = hasSeed;
      this.seed = seed;
      __super__.call(this);
    }

    ReduceObservable.prototype.subscribeCore = function(observer) {
      return this.source.subscribe(new ReduceObserver(observer,this));
    };

    return ReduceObservable;
  }(ObservableBase));

  var ReduceObserver = (function (__super__) {
    inherits(ReduceObserver, __super__);
    function ReduceObserver(o, parent) {
      this._o = o;
      this._p = parent;
      this._fn = parent.accumulator;
      this._hs = parent.hasSeed;
      this._s = parent.seed;
      this._ha = false;
      this._a = null;
      this._hv = false;
      this._i = 0;
      __super__.call(this);
    }

    ReduceObserver.prototype.next = function (x) {
      !this._hv && (this._hv = true);
      if (this._ha) {
        this._a = tryCatch(this._fn)(this._a, x, this._i, this._p);
      } else {
        this._a = this._hs ? tryCatch(this._fn)(this._s, x, this._i, this._p) : x;
        this._ha = true;
      }
      if (this._a === errorObj) { return this._o.onError(this._a.e); }
      this._i++;
    };

    ReduceObserver.prototype.error = function (e) {
      this._o.onError(e);
    };

    ReduceObserver.prototype.completed = function () {
      this._hv && this._o.onNext(this._a);
      !this._hv && this._hs && this._o.onNext(this._s);
      !this._hv && !this._hs && this._o.onError(new EmptyError());
      this._o.onCompleted();
    };

    return ReduceObserver;
  }(AbstractObserver));

  /**
  * Applies an accumulator function over an observable sequence, returning the result of the aggregation as a single element in the result sequence. The specified seed value is used as the initial accumulator value.
  * For aggregation behavior with incremental intermediate results, see Observable.scan.
  * @param {Function} accumulator An accumulator function to be invoked on each element.
  * @param {Any} [seed] The initial accumulator value.
  * @returns {Observable} An observable sequence containing a single element with the final accumulator value.
  */
  observableProto.reduce = function () {
    var hasSeed = false, seed, accumulator = arguments[0];
    if (arguments.length === 2) {
      hasSeed = true;
      seed = arguments[1];
    }
    return new ReduceObservable(this, accumulator, hasSeed, seed);
  };

  var SomeObservable = (function (__super__) {
    inherits(SomeObservable, __super__);
    function SomeObservable(source, fn) {
      this.source = source;
      this._fn = fn;
      __super__.call(this);
    }

    SomeObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new SomeObserver(o, this._fn, this.source));
    };

    return SomeObservable;
  }(ObservableBase));

  var SomeObserver = (function (__super__) {
    inherits(SomeObserver, __super__);

    function SomeObserver(o, fn, s) {
      this._o = o;
      this._fn = fn;
      this._s = s;
      this._i = 0;
      __super__.call(this);
    }

    SomeObserver.prototype.next = function (x) {
      var result = tryCatch(this._fn)(x, this._i++, this._s);
      if (result === errorObj) { return this._o.onError(result.e); }
      if (Boolean(result)) {
        this._o.onNext(true);
        this._o.onCompleted();
      }
    };
    SomeObserver.prototype.error = function (e) { this._o.onError(e); };
    SomeObserver.prototype.completed = function () {
      this._o.onNext(false);
      this._o.onCompleted();
    };

    return SomeObserver;
  }(AbstractObserver));

  /**
   * Determines whether any element of an observable sequence satisfies a condition if present, else if any items are in the sequence.
   * @param {Function} [predicate] A function to test each element for a condition.
   * @returns {Observable} An observable sequence containing a single element determining whether any elements in the source sequence pass the test in the specified predicate if given, else if any items are in the sequence.
   */
  observableProto.some = function (predicate, thisArg) {
    var fn = bindCallback(predicate, thisArg, 3);
    return new SomeObservable(this, fn);
  };

  var IsEmptyObservable = (function (__super__) {
    inherits(IsEmptyObservable, __super__);
    function IsEmptyObservable(source) {
      this.source = source;
      __super__.call(this);
    }

    IsEmptyObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new IsEmptyObserver(o));
    };

    return IsEmptyObservable;
  }(ObservableBase));

  var IsEmptyObserver = (function(__super__) {
    inherits(IsEmptyObserver, __super__);
    function IsEmptyObserver(o) {
      this._o = o;
      __super__.call(this);
    }

    IsEmptyObserver.prototype.next = function () {
      this._o.onNext(false);
      this._o.onCompleted();
    };
    IsEmptyObserver.prototype.error = function (e) { this._o.onError(e); };
    IsEmptyObserver.prototype.completed = function () {
      this._o.onNext(true);
      this._o.onCompleted();
    };

    return IsEmptyObserver;
  }(AbstractObserver));

  /**
   * Determines whether an observable sequence is empty.
   * @returns {Observable} An observable sequence containing a single element determining whether the source sequence is empty.
   */
  observableProto.isEmpty = function () {
    return new IsEmptyObservable(this);
  };

  var EveryObservable = (function (__super__) {
    inherits(EveryObservable, __super__);
    function EveryObservable(source, fn) {
      this.source = source;
      this._fn = fn;
      __super__.call(this);
    }

    EveryObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new EveryObserver(o, this._fn, this.source));
    };

    return EveryObservable;
  }(ObservableBase));

  var EveryObserver = (function (__super__) {
    inherits(EveryObserver, __super__);

    function EveryObserver(o, fn, s) {
      this._o = o;
      this._fn = fn;
      this._s = s;
      this._i = 0;
      __super__.call(this);
    }

    EveryObserver.prototype.next = function (x) {
      var result = tryCatch(this._fn)(x, this._i++, this._s);
      if (result === errorObj) { return this._o.onError(result.e); }
      if (!Boolean(result)) {
        this._o.onNext(false);
        this._o.onCompleted();
      }
    };
    EveryObserver.prototype.error = function (e) { this._o.onError(e); };
    EveryObserver.prototype.completed = function () {
      this._o.onNext(true);
      this._o.onCompleted();
    };

    return EveryObserver;
  }(AbstractObserver));

  /**
   * Determines whether all elements of an observable sequence satisfy a condition.
   * @param {Function} [predicate] A function to test each element for a condition.
   * @param {Any} [thisArg] Object to use as this when executing callback.
   * @returns {Observable} An observable sequence containing a single element determining whether all elements in the source sequence pass the test in the specified predicate.
   */
  observableProto.every = function (predicate, thisArg) {
    var fn = bindCallback(predicate, thisArg, 3);
    return new EveryObservable(this, fn);
  };

  var IncludesObservable = (function (__super__) {
    inherits(IncludesObservable, __super__);
    function IncludesObservable(source, elem, idx) {
      var n = +idx || 0;
      Math.abs(n) === Infinity && (n = 0);

      this.source = source;
      this._elem = elem;
      this._n = n;
      __super__.call(this);
    }

    IncludesObservable.prototype.subscribeCore = function (o) {
      if (this._n < 0) {
        o.onNext(false);
        o.onCompleted();
        return disposableEmpty;
      }

      return this.source.subscribe(new IncludesObserver(o, this._elem, this._n));
    };

    return IncludesObservable;
  }(ObservableBase));

  var IncludesObserver = (function (__super__) {
    inherits(IncludesObserver, __super__);
    function IncludesObserver(o, elem, n) {
      this._o = o;
      this._elem = elem;
      this._n = n;
      this._i = 0;
      __super__.call(this);
    }

    function comparer(a, b) {
      return (a === 0 && b === 0) || (a === b || (isNaN(a) && isNaN(b)));
    }

    IncludesObserver.prototype.next = function (x) {
      if (this._i++ >= this._n && comparer(x, this._elem)) {
        this._o.onNext(true);
        this._o.onCompleted();
      }
    };
    IncludesObserver.prototype.error = function (e) { this._o.onError(e); };
    IncludesObserver.prototype.completed = function () { this._o.onNext(false); this._o.onCompleted(); };

    return IncludesObserver;
  }(AbstractObserver));

  /**
   * Determines whether an observable sequence includes a specified element with an optional equality comparer.
   * @param searchElement The value to locate in the source sequence.
   * @param {Number} [fromIndex] An equality comparer to compare elements.
   * @returns {Observable} An observable sequence containing a single element determining whether the source sequence includes an element that has the specified value from the given index.
   */
  observableProto.includes = function (searchElement, fromIndex) {
    return new IncludesObservable(this, searchElement, fromIndex);
  };

  var CountObservable = (function (__super__) {
    inherits(CountObservable, __super__);
    function CountObservable(source, fn) {
      this.source = source;
      this._fn = fn;
      __super__.call(this);
    }

    CountObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new CountObserver(o, this._fn, this.source));
    };

    return CountObservable;
  }(ObservableBase));

  var CountObserver = (function (__super__) {
    inherits(CountObserver, __super__);

    function CountObserver(o, fn, s) {
      this._o = o;
      this._fn = fn;
      this._s = s;
      this._i = 0;
      this._c = 0;
      __super__.call(this);
    }

    CountObserver.prototype.next = function (x) {
      if (this._fn) {
        var result = tryCatch(this._fn)(x, this._i++, this._s);
        if (result === errorObj) { return this._o.onError(result.e); }
        Boolean(result) && (this._c++);
      } else {
        this._c++;
      }
    };
    CountObserver.prototype.error = function (e) { this._o.onError(e); };
    CountObserver.prototype.completed = function () {
      this._o.onNext(this._c);
      this._o.onCompleted();
    };

    return CountObserver;
  }(AbstractObserver));

  /**
   * Returns an observable sequence containing a value that represents how many elements in the specified observable sequence satisfy a condition if provided, else the count of items.
   * @example
   * res = source.count();
   * res = source.count(function (x) { return x > 3; });
   * @param {Function} [predicate]A function to test each element for a condition.
   * @param {Any} [thisArg] Object to use as this when executing callback.
   * @returns {Observable} An observable sequence containing a single element with a number that represents how many elements in the input sequence satisfy the condition in the predicate function if provided, else the count of items in the sequence.
   */
  observableProto.count = function (predicate, thisArg) {
    var fn = bindCallback(predicate, thisArg, 3);
    return new CountObservable(this, fn);
  };

  var IndexOfObservable = (function (__super__) {
    inherits(IndexOfObservable, __super__);
    function IndexOfObservable(source, e, n) {
      this.source = source;
      this._e = e;
      this._n = n;
      __super__.call(this);
    }

    IndexOfObservable.prototype.subscribeCore = function (o) {
      if (this._n < 0) {
        o.onNext(-1);
        o.onCompleted();
        return disposableEmpty;
      }

      return this.source.subscribe(new IndexOfObserver(o, this._e, this._n));
    };

    return IndexOfObservable;
  }(ObservableBase));

  var IndexOfObserver = (function (__super__) {
    inherits(IndexOfObserver, __super__);
    function IndexOfObserver(o, e, n) {
      this._o = o;
      this._e = e;
      this._n = n;
      this._i = 0;
      __super__.call(this);
    }

    IndexOfObserver.prototype.next = function (x) {
      if (this._i >= this._n && x === this._e) {
        this._o.onNext(this._i);
        this._o.onCompleted();
      }
      this._i++;
    };
    IndexOfObserver.prototype.error = function (e) { this._o.onError(e); };
    IndexOfObserver.prototype.completed = function () { this._o.onNext(-1); this._o.onCompleted(); };

    return IndexOfObserver;
  }(AbstractObserver));

  /**
   * Returns the first index at which a given element can be found in the observable sequence, or -1 if it is not present.
   * @param {Any} searchElement Element to locate in the array.
   * @param {Number} [fromIndex] The index to start the search.  If not specified, defaults to 0.
   * @returns {Observable} And observable sequence containing the first index at which a given element can be found in the observable sequence, or -1 if it is not present.
   */
  observableProto.indexOf = function(searchElement, fromIndex) {
    var n = +fromIndex || 0;
    Math.abs(n) === Infinity && (n = 0);
    return new IndexOfObservable(this, searchElement, n);
  };

  var SumObservable = (function (__super__) {
    inherits(SumObservable, __super__);
    function SumObservable(source, fn) {
      this.source = source;
      this._fn = fn;
      __super__.call(this);
    }

    SumObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new SumObserver(o, this._fn, this.source));
    };

    return SumObservable;
  }(ObservableBase));

  var SumObserver = (function (__super__) {
    inherits(SumObserver, __super__);

    function SumObserver(o, fn, s) {
      this._o = o;
      this._fn = fn;
      this._s = s;
      this._i = 0;
      this._c = 0;
      __super__.call(this);
    }

    SumObserver.prototype.next = function (x) {
      if (this._fn) {
        var result = tryCatch(this._fn)(x, this._i++, this._s);
        if (result === errorObj) { return this._o.onError(result.e); }
        this._c += result;
      } else {
        this._c += x;
      }
    };
    SumObserver.prototype.error = function (e) { this._o.onError(e); };
    SumObserver.prototype.completed = function () {
      this._o.onNext(this._c);
      this._o.onCompleted();
    };

    return SumObserver;
  }(AbstractObserver));

  /**
   * Computes the sum of a sequence of values that are obtained by invoking an optional transform function on each element of the input sequence, else if not specified computes the sum on each item in the sequence.
   * @param {Function} [selector] A transform function to apply to each element.
   * @param {Any} [thisArg] Object to use as this when executing callback.
   * @returns {Observable} An observable sequence containing a single element with the sum of the values in the source sequence.
   */
  observableProto.sum = function (keySelector, thisArg) {
    var fn = bindCallback(keySelector, thisArg, 3);
    return new SumObservable(this, fn);
  };

  /**
   * Returns the elements in an observable sequence with the minimum key value according to the specified comparer.
   * @example
   * var res = source.minBy(function (x) { return x.value; });
   * var res = source.minBy(function (x) { return x.value; }, function (x, y) { return x - y; });
   * @param {Function} keySelector Key selector function.
   * @param {Function} [comparer] Comparer used to compare key values.
   * @returns {Observable} An observable sequence containing a list of zero or more elements that have a minimum key value.
   */
  observableProto.minBy = function (keySelector, comparer) {
    comparer || (comparer = defaultSubComparer);
    return new ExtremaByObservable(this, keySelector, function (x, y) { return comparer(x, y) * -1; });
  };

  /**
   * Returns the minimum element in an observable sequence according to the optional comparer else a default greater than less than check.
   * @example
   * var res = source.min();
   * var res = source.min(function (x, y) { return x.value - y.value; });
   * @param {Function} [comparer] Comparer used to compare elements.
   * @returns {Observable} An observable sequence containing a single element with the minimum element in the source sequence.
   */
  observableProto.min = function (comparer) {
    return this.minBy(identity, comparer).map(firstOnly);
  };

  /**
   * Returns the elements in an observable sequence with the maximum  key value according to the specified comparer.
   * @example
   * var res = source.maxBy(function (x) { return x.value; });
   * var res = source.maxBy(function (x) { return x.value; }, function (x, y) { return x - y;; });
   * @param {Function} keySelector Key selector function.
   * @param {Function} [comparer]  Comparer used to compare key values.
   * @returns {Observable} An observable sequence containing a list of zero or more elements that have a maximum key value.
   */
  observableProto.maxBy = function (keySelector, comparer) {
    comparer || (comparer = defaultSubComparer);
    return new ExtremaByObservable(this, keySelector, comparer);
  };

  /**
   * Returns the maximum value in an observable sequence according to the specified comparer.
   * @example
   * var res = source.max();
   * var res = source.max(function (x, y) { return x.value - y.value; });
   * @param {Function} [comparer] Comparer used to compare elements.
   * @returns {Observable} An observable sequence containing a single element with the maximum element in the source sequence.
   */
  observableProto.max = function (comparer) {
    return this.maxBy(identity, comparer).map(firstOnly);
  };

  var AverageObservable = (function (__super__) {
    inherits(AverageObservable, __super__);
    function AverageObservable(source, fn) {
      this.source = source;
      this._fn = fn;
      __super__.call(this);
    }

    AverageObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new AverageObserver(o, this._fn, this.source));
    };

    return AverageObservable;
  }(ObservableBase));

  var AverageObserver = (function(__super__) {
    inherits(AverageObserver, __super__);
    function AverageObserver(o, fn, s) {
      this._o = o;
      this._fn = fn;
      this._s = s;
      this._c = 0;
      this._t = 0;
      __super__.call(this);
    }

    AverageObserver.prototype.next = function (x) {
      if(this._fn) {
        var r = tryCatch(this._fn)(x, this._c++, this._s);
        if (r === errorObj) { return this._o.onError(r.e); }
        this._t += r;
      } else {
        this._c++;
        this._t += x;
      }
    };
    AverageObserver.prototype.error = function (e) { this._o.onError(e); };
    AverageObserver.prototype.completed = function () {
      if (this._c === 0) { return this._o.onError(new EmptyError()); }
      this._o.onNext(this._t / this._c);
      this._o.onCompleted();
    };

    return AverageObserver;
  }(AbstractObserver));

  /**
   * Computes the average of an observable sequence of values that are in the sequence or obtained by invoking a transform function on each element of the input sequence if present.
   * @param {Function} [selector] A transform function to apply to each element.
   * @param {Any} [thisArg] Object to use as this when executing callback.
   * @returns {Observable} An observable sequence containing a single element with the average of the sequence of values.
   */
  observableProto.average = function (keySelector, thisArg) {
    var source = this, fn;
    if (isFunction(keySelector)) {
      fn = bindCallback(keySelector, thisArg, 3);
    }
    return new AverageObservable(source, fn);
  };

  /**
   *  Determines whether two sequences are equal by comparing the elements pairwise using a specified equality comparer.
   *
   * @example
   * var res = res = source.sequenceEqual([1,2,3]);
   * var res = res = source.sequenceEqual([{ value: 42 }], function (x, y) { return x.value === y.value; });
   * 3 - res = source.sequenceEqual(Rx.Observable.returnValue(42));
   * 4 - res = source.sequenceEqual(Rx.Observable.returnValue({ value: 42 }), function (x, y) { return x.value === y.value; });
   * @param {Observable} second Second observable sequence or array to compare.
   * @param {Function} [comparer] Comparer used to compare elements of both sequences.
   * @returns {Observable} An observable sequence that contains a single element which indicates whether both sequences are of equal length and their corresponding elements are equal according to the specified equality comparer.
   */
  observableProto.sequenceEqual = function (second, comparer) {
    var first = this;
    comparer || (comparer = defaultComparer);
    return new AnonymousObservable(function (o) {
      var donel = false, doner = false, ql = [], qr = [];
      var subscription1 = first.subscribe(function (x) {
        if (qr.length > 0) {
          var v = qr.shift();
          var equal = tryCatch(comparer)(v, x);
          if (equal === errorObj) { return o.onError(equal.e); }
          if (!equal) {
            o.onNext(false);
            o.onCompleted();
          }
        } else if (doner) {
          o.onNext(false);
          o.onCompleted();
        } else {
          ql.push(x);
        }
      }, function(e) { o.onError(e); }, function () {
        donel = true;
        if (ql.length === 0) {
          if (qr.length > 0) {
            o.onNext(false);
            o.onCompleted();
          } else if (doner) {
            o.onNext(true);
            o.onCompleted();
          }
        }
      });

      (isArrayLike(second) || isIterable(second)) && (second = observableFrom(second));
      isPromise(second) && (second = observableFromPromise(second));
      var subscription2 = second.subscribe(function (x) {
        if (ql.length > 0) {
          var v = ql.shift();
          var equal = tryCatch(comparer)(v, x);
          if (equal === errorObj) { return o.onError(equal.e); }
          if (!equal) {
            o.onNext(false);
            o.onCompleted();
          }
        } else if (donel) {
          o.onNext(false);
          o.onCompleted();
        } else {
          qr.push(x);
        }
      }, function(e) { o.onError(e); }, function () {
        doner = true;
        if (qr.length === 0) {
          if (ql.length > 0) {
            o.onNext(false);
            o.onCompleted();
          } else if (donel) {
            o.onNext(true);
            o.onCompleted();
          }
        }
      });
      return new BinaryDisposable(subscription1, subscription2);
    }, first);
  };

  var ElementAtObservable = (function (__super__) {
    inherits(ElementAtObservable, __super__);
    function ElementAtObservable(source, i, d) {
      this.source = source;
      this._i = i;
      this._d = d;
      __super__.call(this);
    }

    ElementAtObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new ElementAtObserver(o, this._i, this._d));
    };

    return ElementAtObservable;
  }(ObservableBase));

  var ElementAtObserver = (function (__super__) {
    inherits(ElementAtObserver, __super__);

    function ElementAtObserver(o, i, d) {
      this._o = o;
      this._i = i;
      this._d = d;
      __super__.call(this);
    }

    ElementAtObserver.prototype.next = function (x) {
      if (this._i-- === 0) {
        this._o.onNext(x);
        this._o.onCompleted();
      }
    };
    ElementAtObserver.prototype.error = function (e) { this._o.onError(e); };
    ElementAtObserver.prototype.completed = function () {
      if (this._d === undefined) {
        this._o.onError(new ArgumentOutOfRangeError());
      } else {
        this._o.onNext(this._d);
        this._o.onCompleted();
      }
    };

    return ElementAtObserver;
  }(AbstractObserver));

  /**
   * Returns the element at a specified index in a sequence or default value if not found.
   * @param {Number} index The zero-based index of the element to retrieve.
   * @param {Any} [defaultValue] The default value to use if elementAt does not find a value.
   * @returns {Observable} An observable sequence that produces the element at the specified position in the source sequence.
   */
  observableProto.elementAt =  function (index, defaultValue) {
    if (index < 0) { throw new ArgumentOutOfRangeError(); }
    return new ElementAtObservable(this, index, defaultValue);
  };

  var SingleObserver = (function(__super__) {
    inherits(SingleObserver, __super__);
    function SingleObserver(o, obj, s) {
      this._o = o;
      this._obj = obj;
      this._s = s;
      this._i = 0;
      this._hv = false;
      this._v = null;
      __super__.call(this);
    }

    SingleObserver.prototype.next = function (x) {
      var shouldYield = false;
      if (this._obj.predicate) {
        var res = tryCatch(this._obj.predicate)(x, this._i++, this._s);
        if (res === errorObj) { return this._o.onError(res.e); }
        Boolean(res) && (shouldYield = true);
      } else if (!this._obj.predicate) {
        shouldYield = true;
      }
      if (shouldYield) {
        if (this._hv) {
          return this._o.onError(new Error('Sequence contains more than one matching element'));
        }
        this._hv = true;
        this._v = x;
      }
    };
    SingleObserver.prototype.error = function (e) { this._o.onError(e); };
    SingleObserver.prototype.completed = function () {
      if (this._hv) {
        this._o.onNext(this._v);
        this._o.onCompleted();
      }
      else if (this._obj.defaultValue === undefined) {
        this._o.onError(new EmptyError());
      } else {
        this._o.onNext(this._obj.defaultValue);
        this._o.onCompleted();
      }
    };

    return SingleObserver;
  }(AbstractObserver));


    /**
     * Returns the only element of an observable sequence that satisfies the condition in the optional predicate, and reports an exception if there is not exactly one element in the observable sequence.
     * @returns {Observable} Sequence containing the single element in the observable sequence that satisfies the condition in the predicate.
     */
    observableProto.single = function (predicate, thisArg) {
      var obj = {}, source = this;
      if (typeof arguments[0] === 'object') {
        obj = arguments[0];
      } else {
        obj = {
          predicate: arguments[0],
          thisArg: arguments[1],
          defaultValue: arguments[2]
        };
      }
      if (isFunction (obj.predicate)) {
        var fn = obj.predicate;
        obj.predicate = bindCallback(fn, obj.thisArg, 3);
      }
      return new AnonymousObservable(function (o) {
        return source.subscribe(new SingleObserver(o, obj, source));
      }, source);
    };

  var FirstObservable = (function (__super__) {
    inherits(FirstObservable, __super__);
    function FirstObservable(source, obj) {
      this.source = source;
      this._obj = obj;
      __super__.call(this);
    }

    FirstObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new FirstObserver(o, this._obj, this.source));
    };

    return FirstObservable;
  }(ObservableBase));

  var FirstObserver = (function(__super__) {
    inherits(FirstObserver, __super__);
    function FirstObserver(o, obj, s) {
      this._o = o;
      this._obj = obj;
      this._s = s;
      this._i = 0;
      __super__.call(this);
    }

    FirstObserver.prototype.next = function (x) {
      if (this._obj.predicate) {
        var res = tryCatch(this._obj.predicate)(x, this._i++, this._s);
        if (res === errorObj) { return this._o.onError(res.e); }
        if (Boolean(res)) {
          this._o.onNext(x);
          this._o.onCompleted();
        }
      } else if (!this._obj.predicate) {
        this._o.onNext(x);
        this._o.onCompleted();
      }
    };
    FirstObserver.prototype.error = function (e) { this._o.onError(e); };
    FirstObserver.prototype.completed = function () {
      if (this._obj.defaultValue === undefined) {
        this._o.onError(new EmptyError());
      } else {
        this._o.onNext(this._obj.defaultValue);
        this._o.onCompleted();
      }
    };

    return FirstObserver;
  }(AbstractObserver));

  /**
   * Returns the first element of an observable sequence that satisfies the condition in the predicate if present else the first item in the sequence.
   * @returns {Observable} Sequence containing the first element in the observable sequence that satisfies the condition in the predicate if provided, else the first item in the sequence.
   */
  observableProto.first = function () {
    var obj = {}, source = this;
    if (typeof arguments[0] === 'object') {
      obj = arguments[0];
    } else {
      obj = {
        predicate: arguments[0],
        thisArg: arguments[1],
        defaultValue: arguments[2]
      };
    }
    if (isFunction (obj.predicate)) {
      var fn = obj.predicate;
      obj.predicate = bindCallback(fn, obj.thisArg, 3);
    }
    return new FirstObservable(this, obj);
  };

  var LastObservable = (function (__super__) {
    inherits(LastObservable, __super__);
    function LastObservable(source, obj) {
      this.source = source;
      this._obj = obj;
      __super__.call(this);
    }

    LastObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new LastObserver(o, this._obj, this.source));
    };

    return LastObservable;
  }(ObservableBase));

  var LastObserver = (function(__super__) {
    inherits(LastObserver, __super__);
    function LastObserver(o, obj, s) {
      this._o = o;
      this._obj = obj;
      this._s = s;
      this._i = 0;
      this._hv = false;
      this._v = null;
      __super__.call(this);
    }

    LastObserver.prototype.next = function (x) {
      var shouldYield = false;
      if (this._obj.predicate) {
        var res = tryCatch(this._obj.predicate)(x, this._i++, this._s);
        if (res === errorObj) { return this._o.onError(res.e); }
        Boolean(res) && (shouldYield = true);
      } else if (!this._obj.predicate) {
        shouldYield = true;
      }
      if (shouldYield) {
        this._hv = true;
        this._v = x;
      }
    };
    LastObserver.prototype.error = function (e) { this._o.onError(e); };
    LastObserver.prototype.completed = function () {
      if (this._hv) {
        this._o.onNext(this._v);
        this._o.onCompleted();
      }
      else if (this._obj.defaultValue === undefined) {
        this._o.onError(new EmptyError());
      } else {
        this._o.onNext(this._obj.defaultValue);
        this._o.onCompleted();
      }
    };

    return LastObserver;
  }(AbstractObserver));

  /**
   * Returns the last element of an observable sequence that satisfies the condition in the predicate if specified, else the last element.
   * @returns {Observable} Sequence containing the last element in the observable sequence that satisfies the condition in the predicate.
   */
  observableProto.last = function () {
    var obj = {}, source = this;
    if (typeof arguments[0] === 'object') {
      obj = arguments[0];
    } else {
      obj = {
        predicate: arguments[0],
        thisArg: arguments[1],
        defaultValue: arguments[2]
      };
    }
    if (isFunction (obj.predicate)) {
      var fn = obj.predicate;
      obj.predicate = bindCallback(fn, obj.thisArg, 3);
    }
    return new LastObservable(this, obj);
  };

  var FindValueObserver = (function(__super__) {
    inherits(FindValueObserver, __super__);
    function FindValueObserver(observer, source, callback, yieldIndex) {
      this._o = observer;
      this._s = source;
      this._cb = callback;
      this._y = yieldIndex;
      this._i = 0;
      __super__.call(this);
    }

    FindValueObserver.prototype.next = function (x) {
      var shouldRun = tryCatch(this._cb)(x, this._i, this._s);
      if (shouldRun === errorObj) { return this._o.onError(shouldRun.e); }
      if (shouldRun) {
        this._o.onNext(this._y ? this._i : x);
        this._o.onCompleted();
      } else {
        this._i++;
      }
    };

    FindValueObserver.prototype.error = function (e) {
      this._o.onError(e);
    };

    FindValueObserver.prototype.completed = function () {
      this._y && this._o.onNext(-1);
      this._o.onCompleted();
    };

    return FindValueObserver;
  }(AbstractObserver));

  function findValue (source, predicate, thisArg, yieldIndex) {
    var callback = bindCallback(predicate, thisArg, 3);
    return new AnonymousObservable(function (o) {
      return source.subscribe(new FindValueObserver(o, source, callback, yieldIndex));
    }, source);
  }

  /**
   * Searches for an element that matches the conditions defined by the specified predicate, and returns the first occurrence within the entire Observable sequence.
   * @param {Function} predicate The predicate that defines the conditions of the element to search for.
   * @param {Any} [thisArg] Object to use as `this` when executing the predicate.
   * @returns {Observable} An Observable sequence with the first element that matches the conditions defined by the specified predicate, if found; otherwise, undefined.
   */
  observableProto.find = function (predicate, thisArg) {
    return findValue(this, predicate, thisArg, false);
  };

  /**
   * Searches for an element that matches the conditions defined by the specified predicate, and returns
   * an Observable sequence with the zero-based index of the first occurrence within the entire Observable sequence.
   * @param {Function} predicate The predicate that defines the conditions of the element to search for.
   * @param {Any} [thisArg] Object to use as `this` when executing the predicate.
   * @returns {Observable} An Observable sequence with the zero-based index of the first occurrence of an element that matches the conditions defined by match, if found; otherwise, –1.
  */
  observableProto.findIndex = function (predicate, thisArg) {
    return findValue(this, predicate, thisArg, true);
  };

  var ToSetObservable = (function (__super__) {
    inherits(ToSetObservable, __super__);
    function ToSetObservable(source) {
      this.source = source;
      __super__.call(this);
    }

    ToSetObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new ToSetObserver(o));
    };

    return ToSetObservable;
  }(ObservableBase));

  var ToSetObserver = (function (__super__) {
    inherits(ToSetObserver, __super__);
    function ToSetObserver(o) {
      this._o = o;
      this._s = new root.Set();
      __super__.call(this);
    }

    ToSetObserver.prototype.next = function (x) {
      this._s.add(x);
    };

    ToSetObserver.prototype.error = function (e) {
      this._o.onError(e);
    };

    ToSetObserver.prototype.completed = function () {
      this._o.onNext(this._s);
      this._o.onCompleted();
    };

    return ToSetObserver;
  }(AbstractObserver));

  /**
   * Converts the observable sequence to a Set if it exists.
   * @returns {Observable} An observable sequence with a single value of a Set containing the values from the observable sequence.
   */
  observableProto.toSet = function () {
    if (typeof root.Set === 'undefined') { throw new TypeError(); }
    return new ToSetObservable(this);
  };

  var ToMapObservable = (function (__super__) {
    inherits(ToMapObservable, __super__);
    function ToMapObservable(source, k, e) {
      this.source = source;
      this._k = k;
      this._e = e;
      __super__.call(this);
    }

    ToMapObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new ToMapObserver(o, this._k, this._e));
    };

    return ToMapObservable;
  }(ObservableBase));

  var ToMapObserver = (function (__super__) {
    inherits(ToMapObserver, __super__);
    function ToMapObserver(o, k, e) {
      this._o = o;
      this._k = k;
      this._e = e;
      this._m = new root.Map();
      __super__.call(this);
    }

    ToMapObserver.prototype.next = function (x) {
      var key = tryCatch(this._k)(x);
      if (key === errorObj) { return this._o.onError(key.e); }
      var elem = x;
      if (this._e) {
        elem = tryCatch(this._e)(x);
        if (elem === errorObj) { return this._o.onError(elem.e); }
      }

      this._m.set(key, elem);
    };

    ToMapObserver.prototype.error = function (e) {
      this._o.onError(e);
    };

    ToMapObserver.prototype.completed = function () {
      this._o.onNext(this._m);
      this._o.onCompleted();
    };

    return ToMapObserver;
  }(AbstractObserver));

  /**
  * Converts the observable sequence to a Map if it exists.
  * @param {Function} keySelector A function which produces the key for the Map.
  * @param {Function} [elementSelector] An optional function which produces the element for the Map. If not present, defaults to the value from the observable sequence.
  * @returns {Observable} An observable sequence with a single value of a Map containing the values from the observable sequence.
  */
  observableProto.toMap = function (keySelector, elementSelector) {
    if (typeof root.Map === 'undefined') { throw new TypeError(); }
    return new ToMapObservable(this, keySelector, elementSelector);
  };

  var SliceObservable = (function (__super__) {
    inherits(SliceObservable, __super__);
    function SliceObservable(source, b, e) {
      this.source = source;
      this._b = b;
      this._e = e;
      __super__.call(this);
    }

    SliceObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new SliceObserver(o, this._b, this._e));
    };

    return SliceObservable;
  }(ObservableBase));

  var SliceObserver = (function (__super__) {
    inherits(SliceObserver, __super__);

    function SliceObserver(o, b, e) {
      this._o = o;
      this._b = b;
      this._e = e;
      this._i = 0;
      __super__.call(this);
    }

    SliceObserver.prototype.next = function (x) {
      if (this._i >= this._b) {
        if (this._e === this._i) {
          this._o.onCompleted();
        } else {
          this._o.onNext(x);
        }
      }
      this._i++;
    };
    SliceObserver.prototype.error = function (e) { this._o.onError(e); };
    SliceObserver.prototype.completed = function () { this._o.onCompleted(); };

    return SliceObserver;
  }(AbstractObserver));

  /*
  * The slice() method returns a shallow copy of a portion of an Observable into a new Observable object.
  * Unlike the array version, this does not support negative numbers for being or end.
  * @param {Number} [begin] Zero-based index at which to begin extraction. If omitted, this will default to zero.
  * @param {Number} [end] Zero-based index at which to end extraction. slice extracts up to but not including end.
  * If omitted, this will emit the rest of the Observable object.
  * @returns {Observable} A shallow copy of a portion of an Observable into a new Observable object.
  */
  observableProto.slice = function (begin, end) {
    var start = begin || 0;
    if (start < 0) { throw new Rx.ArgumentOutOfRangeError(); }
    if (typeof end === 'number' && end < start) {
      throw new Rx.ArgumentOutOfRangeError();
    }
    return new SliceObservable(this, start, end);
  };

  var LastIndexOfObservable = (function (__super__) {
    inherits(LastIndexOfObservable, __super__);
    function LastIndexOfObservable(source, e, n) {
      this.source = source;
      this._e = e;
      this._n = n;
      __super__.call(this);
    }

    LastIndexOfObservable.prototype.subscribeCore = function (o) {
      if (this._n < 0) {
        o.onNext(-1);
        o.onCompleted();
        return disposableEmpty;
      }

      return this.source.subscribe(new LastIndexOfObserver(o, this._e, this._n));
    };

    return LastIndexOfObservable;
  }(ObservableBase));

  var LastIndexOfObserver = (function (__super__) {
    inherits(LastIndexOfObserver, __super__);
    function LastIndexOfObserver(o, e, n) {
      this._o = o;
      this._e = e;
      this._n = n;
      this._v = 0;
      this._hv = false;
      this._i = 0;
      __super__.call(this);
    }

    LastIndexOfObserver.prototype.next = function (x) {
      if (this._i >= this._n && x === this._e) {
        this._hv = true;
        this._v = this._i;
      }
      this._i++;
    };
    LastIndexOfObserver.prototype.error = function (e) { this._o.onError(e); };
    LastIndexOfObserver.prototype.completed = function () {
      if (this._hv) {
        this._o.onNext(this._v);
      } else {
        this._o.onNext(-1);
      }
      this._o.onCompleted();
    };

    return LastIndexOfObserver;
  }(AbstractObserver));

  /**
   * Returns the last index at which a given element can be found in the observable sequence, or -1 if it is not present.
   * @param {Any} searchElement Element to locate in the array.
   * @param {Number} [fromIndex] The index to start the search.  If not specified, defaults to 0.
   * @returns {Observable} And observable sequence containing the last index at which a given element can be found in the observable sequence, or -1 if it is not present.
   */
  observableProto.lastIndexOf = function(searchElement, fromIndex) {
    var n = +fromIndex || 0;
    Math.abs(n) === Infinity && (n = 0);
    return new LastIndexOfObservable(this, searchElement, n);
  };

  Observable.wrap = function (fn) {
    function createObservable() {
      return Observable.spawn.call(this, fn.apply(this, arguments));
    }

    createObservable.__generatorFunction__ = fn;
    return createObservable;
  };

  var spawn = Observable.spawn = function () {
    var gen = arguments[0], self = this, args = [];
    for (var i = 1, len = arguments.length; i < len; i++) { args.push(arguments[i]); }

    return new AnonymousObservable(function (o) {
      var g = new CompositeDisposable();

      if (isFunction(gen)) { gen = gen.apply(self, args); }
      if (!gen || !isFunction(gen.next)) {
        o.onNext(gen);
        return o.onCompleted();
      }

      function processGenerator(res) {
        var ret = tryCatch(gen.next).call(gen, res);
        if (ret === errorObj) { return o.onError(ret.e); }
        next(ret);
      }

      processGenerator();

      function onError(err) {
        var ret = tryCatch(gen.next).call(gen, err);
        if (ret === errorObj) { return o.onError(ret.e); }
        next(ret);
      }

      function next(ret) {
        if (ret.done) {
          o.onNext(ret.value);
          o.onCompleted();
          return;
        }
        var obs = toObservable.call(self, ret.value);
        var value = null;
        var hasValue = false;
        if (Observable.isObservable(obs)) {
          g.add(obs.subscribe(function(val) {
            hasValue = true;
            value = val;
          }, onError, function() {
            hasValue && processGenerator(value);
          }));
        } else {
          onError(new TypeError('type not supported'));
        }
      }

      return g;
    });
  };

  function toObservable(obj) {
    if (!obj) { return obj; }
    if (Observable.isObservable(obj)) { return obj; }
    if (isPromise(obj)) { return Observable.fromPromise(obj); }
    if (isGeneratorFunction(obj) || isGenerator(obj)) { return spawn.call(this, obj); }
    if (isFunction(obj)) { return thunkToObservable.call(this, obj); }
    if (isArrayLike(obj) || isIterable(obj)) { return arrayToObservable.call(this, obj); }
    if (isObject(obj)) {return objectToObservable.call(this, obj);}
    return obj;
  }

  function arrayToObservable (obj) {
    return Observable.from(obj).concatMap(function(o) {
      if(Observable.isObservable(o) || isObject(o)) {
        return toObservable.call(null, o);
      } else {
        return Rx.Observable.just(o);
      }
    }).toArray();
  }

  function objectToObservable (obj) {
    var results = new obj.constructor(), keys = Object.keys(obj), observables = [];
    for (var i = 0, len = keys.length; i < len; i++) {
      var key = keys[i];
      var observable = toObservable.call(this, obj[key]);

      if(observable && Observable.isObservable(observable)) {
        defer(observable, key);
      } else {
        results[key] = obj[key];
      }
    }

    return Observable.forkJoin.apply(Observable, observables).map(function() {
      return results;
    });


    function defer (observable, key) {
      results[key] = undefined;
      observables.push(observable.map(function (next) {
        results[key] = next;
      }));
    }
  }

  function thunkToObservable(fn) {
    var self = this;
    return new AnonymousObservable(function (o) {
      fn.call(self, function () {
        var err = arguments[0], res = arguments[1];
        if (err) { return o.onError(err); }
        if (arguments.length > 2) {
          var args = [];
          for (var i = 1, len = arguments.length; i < len; i++) { args.push(arguments[i]); }
          res = args;
        }
        o.onNext(res);
        o.onCompleted();
      });
    });
  }

  function isGenerator(obj) {
    return isFunction (obj.next) && isFunction (obj['throw']);
  }

  function isGeneratorFunction(obj) {
    var ctor = obj.constructor;
    if (!ctor) { return false; }
    if (ctor.name === 'GeneratorFunction' || ctor.displayName === 'GeneratorFunction') { return true; }
    return isGenerator(ctor.prototype);
  }

  function isObject(val) {
    return Object == val.constructor;
  }

  /**
   * Invokes the specified function asynchronously on the specified scheduler, surfacing the result through an observable sequence.
   *
   * @example
   * var res = Rx.Observable.start(function () { console.log('hello'); });
   * var res = Rx.Observable.start(function () { console.log('hello'); }, Rx.Scheduler.timeout);
   * var res = Rx.Observable.start(function () { this.log('hello'); }, Rx.Scheduler.timeout, console);
   *
   * @param {Function} func Function to run asynchronously.
   * @param {Scheduler} [scheduler]  Scheduler to run the function on. If not specified, defaults to Scheduler.timeout.
   * @param [context]  The context for the func parameter to be executed.  If not specified, defaults to undefined.
   * @returns {Observable} An observable sequence exposing the function's result value, or an exception.
   *
   * Remarks
   * * The function is called immediately, not during the subscription of the resulting sequence.
   * * Multiple subscriptions to the resulting sequence can observe the function's result.
   */
  Observable.start = function (func, context, scheduler) {
    return observableToAsync(func, context, scheduler)();
  };

  /**
   * Converts the function into an asynchronous function. Each invocation of the resulting asynchronous function causes an invocation of the original synchronous function on the specified scheduler.
   * @param {Function} function Function to convert to an asynchronous function.
   * @param {Scheduler} [scheduler] Scheduler to run the function on. If not specified, defaults to Scheduler.timeout.
   * @param {Mixed} [context] The context for the func parameter to be executed.  If not specified, defaults to undefined.
   * @returns {Function} Asynchronous function.
   */
  var observableToAsync = Observable.toAsync = function (func, context, scheduler) {
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    return function () {
      var args = arguments,
        subject = new AsyncSubject();

      scheduler.schedule(null, function () {
        var result;
        try {
          result = func.apply(context, args);
        } catch (e) {
          subject.onError(e);
          return;
        }
        subject.onNext(result);
        subject.onCompleted();
      });
      return subject.asObservable();
    };
  };

function createCbObservable(fn, ctx, selector, args) {
  var o = new AsyncSubject();

  args.push(createCbHandler(o, ctx, selector));
  fn.apply(ctx, args);

  return o.asObservable();
}

function createCbHandler(o, ctx, selector) {
  return function handler () {
    var len = arguments.length, results = new Array(len);
    for(var i = 0; i < len; i++) { results[i] = arguments[i]; }

    if (isFunction(selector)) {
      results = tryCatch(selector).apply(ctx, results);
      if (results === errorObj) { return o.onError(results.e); }
      o.onNext(results);
    } else {
      if (results.length <= 1) {
        o.onNext(results[0]);
      } else {
        o.onNext(results);
      }
    }

    o.onCompleted();
  };
}

/**
 * Converts a callback function to an observable sequence.
 *
 * @param {Function} fn Function with a callback as the last parameter to convert to an Observable sequence.
 * @param {Mixed} [ctx] The context for the func parameter to be executed.  If not specified, defaults to undefined.
 * @param {Function} [selector] A selector which takes the arguments from the callback to produce a single item to yield on next.
 * @returns {Function} A function, when executed with the required parameters minus the callback, produces an Observable sequence with a single value of the arguments to the callback as an array.
 */
Observable.fromCallback = function (fn, ctx, selector) {
  return function () {
    typeof ctx === 'undefined' && (ctx = this); 

    var len = arguments.length, args = new Array(len)
    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
    return createCbObservable(fn, ctx, selector, args);
  };
};

function createNodeObservable(fn, ctx, selector, args) {
  var o = new AsyncSubject();

  args.push(createNodeHandler(o, ctx, selector));
  fn.apply(ctx, args);

  return o.asObservable();
}

function createNodeHandler(o, ctx, selector) {
  return function handler () {
    var err = arguments[0];
    if (err) { return o.onError(err); }

    var len = arguments.length, results = [];
    for(var i = 1; i < len; i++) { results[i - 1] = arguments[i]; }

    if (isFunction(selector)) {
      var results = tryCatch(selector).apply(ctx, results);
      if (results === errorObj) { return o.onError(results.e); }
      o.onNext(results);
    } else {
      if (results.length <= 1) {
        o.onNext(results[0]);
      } else {
        o.onNext(results);
      }
    }

    o.onCompleted();
  };
}

/**
 * Converts a Node.js callback style function to an observable sequence.  This must be in function (err, ...) format.
 * @param {Function} fn The function to call
 * @param {Mixed} [ctx] The context for the func parameter to be executed.  If not specified, defaults to undefined.
 * @param {Function} [selector] A selector which takes the arguments from the callback minus the error to produce a single item to yield on next.
 * @returns {Function} An async function which when applied, returns an observable sequence with the callback arguments as an array.
 */
Observable.fromNodeCallback = function (fn, ctx, selector) {
  return function () {
    typeof ctx === 'undefined' && (ctx = this); 
    var len = arguments.length, args = new Array(len);
    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
    return createNodeObservable(fn, ctx, selector, args);
  };
};

  function isNodeList(el) {
    if (root.StaticNodeList) {
      // IE8 Specific
      // instanceof is slower than Object#toString, but Object#toString will not work as intended in IE8
      return el instanceof root.StaticNodeList || el instanceof root.NodeList;
    } else {
      return Object.prototype.toString.call(el) === '[object NodeList]';
    }
  }

  function ListenDisposable(e, n, fn) {
    this._e = e;
    this._n = n;
    this._fn = fn;
    this._e.addEventListener(this._n, this._fn, false);
    this.isDisposed = false;
  }
  ListenDisposable.prototype.dispose = function () {
    if (!this.isDisposed) {
      this._e.removeEventListener(this._n, this._fn, false);
      this.isDisposed = true;
    }
  };

  function createEventListener (el, eventName, handler) {
    var disposables = new CompositeDisposable();

    // Asume NodeList or HTMLCollection
    var elemToString = Object.prototype.toString.call(el);
    if (isNodeList(el) || elemToString === '[object HTMLCollection]') {
      for (var i = 0, len = el.length; i < len; i++) {
        disposables.add(createEventListener(el.item(i), eventName, handler));
      }
    } else if (el) {
      disposables.add(new ListenDisposable(el, eventName, handler));
    }

    return disposables;
  }

  /**
   * Configuration option to determine whether to use native events only
   */
  Rx.config.useNativeEvents = false;

  var EventObservable = (function(__super__) {
    inherits(EventObservable, __super__);
    function EventObservable(el, name, fn) {
      this._el = el;
      this._n = name;
      this._fn = fn;
      __super__.call(this);
    }

    function createHandler(o, fn) {
      return function handler () {
        var results = arguments[0];
        if (isFunction(fn)) {
          results = tryCatch(fn).apply(null, arguments);
          if (results === errorObj) { return o.onError(results.e); }
        }
        o.onNext(results);
      };
    }

    EventObservable.prototype.subscribeCore = function (o) {
      return createEventListener(
        this._el,
        this._n,
        createHandler(o, this._fn));
    };

    return EventObservable;
  }(ObservableBase));

  /**
   * Creates an observable sequence by adding an event listener to the matching DOMElement or each item in the NodeList.
   * @param {Object} element The DOMElement or NodeList to attach a listener.
   * @param {String} eventName The event name to attach the observable sequence.
   * @param {Function} [selector] A selector which takes the arguments from the event handler to produce a single item to yield on next.
   * @returns {Observable} An observable sequence of events from the specified element and the specified event.
   */
  Observable.fromEvent = function (element, eventName, selector) {
    // Node.js specific
    if (element.addListener) {
      return fromEventPattern(
        function (h) { element.addListener(eventName, h); },
        function (h) { element.removeListener(eventName, h); },
        selector);
    }

    // Use only if non-native events are allowed
    if (!Rx.config.useNativeEvents) {
      // Handles jq, Angular.js, Zepto, Marionette, Ember.js
      if (typeof element.on === 'function' && typeof element.off === 'function') {
        return fromEventPattern(
          function (h) { element.on(eventName, h); },
          function (h) { element.off(eventName, h); },
          selector);
      }
    }

    return new EventObservable(element, eventName, selector).publish().refCount();
  };

  var EventPatternObservable = (function(__super__) {
    inherits(EventPatternObservable, __super__);
    function EventPatternObservable(add, del, fn) {
      this._add = add;
      this._del = del;
      this._fn = fn;
      __super__.call(this);
    }

    function createHandler(o, fn) {
      return function handler () {
        var results = arguments[0];
        if (isFunction(fn)) {
          results = tryCatch(fn).apply(null, arguments);
          if (results === errorObj) { return o.onError(results.e); }
        }
        o.onNext(results);
      };
    }

    EventPatternObservable.prototype.subscribeCore = function (o) {
      var fn = createHandler(o, this._fn);
      var returnValue = this._add(fn);
      return new EventPatternDisposable(this._del, fn, returnValue);
    };

    function EventPatternDisposable(del, fn, ret) {
      this._del = del;
      this._fn = fn;
      this._ret = ret;
      this.isDisposed = false;
    }

    EventPatternDisposable.prototype.dispose = function () {
      if(!this.isDisposed) {
        isFunction(this._del) && this._del(this._fn, this._ret);
        this.isDisposed = true;
      }
    };

    return EventPatternObservable;
  }(ObservableBase));

  /**
   * Creates an observable sequence from an event emitter via an addHandler/removeHandler pair.
   * @param {Function} addHandler The function to add a handler to the emitter.
   * @param {Function} [removeHandler] The optional function to remove a handler from an emitter.
   * @param {Function} [selector] A selector which takes the arguments from the event handler to produce a single item to yield on next.
   * @returns {Observable} An observable sequence which wraps an event from an event emitter
   */
  var fromEventPattern = Observable.fromEventPattern = function (addHandler, removeHandler, selector) {
    return new EventPatternObservable(addHandler, removeHandler, selector).publish().refCount();
  };

  /**
   * Invokes the asynchronous function, surfacing the result through an observable sequence.
   * @param {Function} functionAsync Asynchronous function which returns a Promise to run.
   * @returns {Observable} An observable sequence exposing the function's result value, or an exception.
   */
  Observable.startAsync = function (functionAsync) {
    var promise = tryCatch(functionAsync)();
    if (promise === errorObj) { return observableThrow(promise.e); }
    return observableFromPromise(promise);
  };

  var PausableObservable = (function (__super__) {
    inherits(PausableObservable, __super__);
    function PausableObservable(source, pauser) {
      this.source = source;
      this.controller = new Subject();
      this.paused = true;

      if (pauser && pauser.subscribe) {
        this.pauser = this.controller.merge(pauser);
      } else {
        this.pauser = this.controller;
      }

      __super__.call(this);
    }

    PausableObservable.prototype._subscribe = function (o) {
      var conn = this.source.publish(),
        subscription = conn.subscribe(o),
        connection = disposableEmpty;

      var pausable = this.pauser.startWith(!this.paused).distinctUntilChanged().subscribe(function (b) {
        if (b) {
          connection = conn.connect();
        } else {
          connection.dispose();
          connection = disposableEmpty;
        }
      });

      return new NAryDisposable([subscription, connection, pausable]);
    };

    PausableObservable.prototype.pause = function () {
      this.paused = true;
      this.controller.onNext(false);
    };

    PausableObservable.prototype.resume = function () {
      this.paused = false;
      this.controller.onNext(true);
    };

    return PausableObservable;

  }(Observable));

  /**
   * Pauses the underlying observable sequence based upon the observable sequence which yields true/false.
   * @example
   * var pauser = new Rx.Subject();
   * var source = Rx.Observable.interval(100).pausable(pauser);
   * @param {Observable} pauser The observable sequence used to pause the underlying sequence.
   * @returns {Observable} The observable sequence which is paused based upon the pauser.
   */
  observableProto.pausable = function (pauser) {
    return new PausableObservable(this, pauser);
  };

  function combineLatestSource(source, subject, resultSelector) {
    return new AnonymousObservable(function (o) {
      var hasValue = [false, false],
        hasValueAll = false,
        isDone = false,
        values = new Array(2),
        err;

      function next(x, i) {
        values[i] = x;
        hasValue[i] = true;
        if (hasValueAll || (hasValueAll = hasValue.every(identity))) {
          if (err) { return o.onError(err); }
          var res = tryCatch(resultSelector).apply(null, values);
          if (res === errorObj) { return o.onError(res.e); }
          o.onNext(res);
        }
        isDone && values[1] && o.onCompleted();
      }

      return new BinaryDisposable(
        source.subscribe(
          function (x) {
            next(x, 0);
          },
          function (e) {
            if (values[1]) {
              o.onError(e);
            } else {
              err = e;
            }
          },
          function () {
            isDone = true;
            values[1] && o.onCompleted();
          }),
        subject.subscribe(
          function (x) {
            next(x, 1);
          },
          function (e) { o.onError(e); },
          function () {
            isDone = true;
            next(true, 1);
          })
        );
    }, source);
  }

  var PausableBufferedObservable = (function (__super__) {
    inherits(PausableBufferedObservable, __super__);
    function PausableBufferedObservable(source, pauser) {
      this.source = source;
      this.controller = new Subject();
      this.paused = true;

      if (pauser && pauser.subscribe) {
        this.pauser = this.controller.merge(pauser);
      } else {
        this.pauser = this.controller;
      }

      __super__.call(this);
    }

    PausableBufferedObservable.prototype._subscribe = function (o) {
      var q = [], previousShouldFire;

      function drainQueue() { while (q.length > 0) { o.onNext(q.shift()); } }

      var subscription =
        combineLatestSource(
          this.source,
          this.pauser.startWith(!this.paused).distinctUntilChanged(),
          function (data, shouldFire) {
            return { data: data, shouldFire: shouldFire };
          })
          .subscribe(
            function (results) {
              if (previousShouldFire !== undefined && results.shouldFire !== previousShouldFire) {
                previousShouldFire = results.shouldFire;
                // change in shouldFire
                if (results.shouldFire) { drainQueue(); }
              } else {
                previousShouldFire = results.shouldFire;
                // new data
                if (results.shouldFire) {
                  o.onNext(results.data);
                } else {
                  q.push(results.data);
                }
              }
            },
            function (err) {
              drainQueue();
              o.onError(err);
            },
            function () {
              drainQueue();
              o.onCompleted();
            }
          );
      return subscription;      
    };

    PausableBufferedObservable.prototype.pause = function () {
      this.paused = true;
      this.controller.onNext(false);
    };

    PausableBufferedObservable.prototype.resume = function () {
      this.paused = false;
      this.controller.onNext(true);
    };

    return PausableBufferedObservable;

  }(Observable));

  /**
   * Pauses the underlying observable sequence based upon the observable sequence which yields true/false,
   * and yields the values that were buffered while paused.
   * @example
   * var pauser = new Rx.Subject();
   * var source = Rx.Observable.interval(100).pausableBuffered(pauser);
   * @param {Observable} pauser The observable sequence used to pause the underlying sequence.
   * @returns {Observable} The observable sequence which is paused based upon the pauser.
   */
  observableProto.pausableBuffered = function (pauser) {
    return new PausableBufferedObservable(this, pauser);
  };

  var ControlledObservable = (function (__super__) {
    inherits(ControlledObservable, __super__);
    function ControlledObservable (source, enableQueue, scheduler) {
      __super__.call(this);
      this.subject = new ControlledSubject(enableQueue, scheduler);
      this.source = source.multicast(this.subject).refCount();
    }

    ControlledObservable.prototype._subscribe = function (o) {
      return this.source.subscribe(o);
    };

    ControlledObservable.prototype.request = function (numberOfItems) {
      return this.subject.request(numberOfItems == null ? -1 : numberOfItems);
    };

    return ControlledObservable;

  }(Observable));

  var ControlledSubject = (function (__super__) {
    inherits(ControlledSubject, __super__);
    function ControlledSubject(enableQueue, scheduler) {
      enableQueue == null && (enableQueue = true);

      __super__.call(this);
      this.subject = new Subject();
      this.enableQueue = enableQueue;
      this.queue = enableQueue ? [] : null;
      this.requestedCount = 0;
      this.requestedDisposable = null;
      this.error = null;
      this.hasFailed = false;
      this.hasCompleted = false;
      this.scheduler = scheduler || currentThreadScheduler;
    }

    addProperties(ControlledSubject.prototype, Observer, {
      _subscribe: function (o) {
        return this.subject.subscribe(o);
      },
      onCompleted: function () {
        this.hasCompleted = true;
        if (!this.enableQueue || this.queue.length === 0) {
          this.subject.onCompleted();
          this.disposeCurrentRequest();
        } else {
          this.queue.push(Notification.createOnCompleted());
        }
      },
      onError: function (error) {
        this.hasFailed = true;
        this.error = error;
        if (!this.enableQueue || this.queue.length === 0) {
          this.subject.onError(error);
          this.disposeCurrentRequest();
        } else {
          this.queue.push(Notification.createOnError(error));
        }
      },
      onNext: function (value) {
        if (this.requestedCount <= 0) {
          this.enableQueue && this.queue.push(Notification.createOnNext(value));
        } else {
          (this.requestedCount-- === 0) && this.disposeCurrentRequest();
          this.subject.onNext(value);
        }
      },
      _processRequest: function (numberOfItems) {
        if (this.enableQueue) {
          while (this.queue.length > 0 && (numberOfItems > 0 || this.queue[0].kind !== 'N')) {
            var first = this.queue.shift();
            first.accept(this.subject);
            if (first.kind === 'N') {
              numberOfItems--;
            } else {
              this.disposeCurrentRequest();
              this.queue = [];
            }
          }
        }

        return numberOfItems;
      },
      request: function (number) {
        this.disposeCurrentRequest();
        var self = this;

        this.requestedDisposable = this.scheduler.schedule(number,
        function(s, i) {
          var remaining = self._processRequest(i);
          var stopped = self.hasCompleted || self.hasFailed;
          if (!stopped && remaining > 0) {
            self.requestedCount = remaining;

            return disposableCreate(function () {
              self.requestedCount = 0;
            });
              // Scheduled item is still in progress. Return a new
              // disposable to allow the request to be interrupted
              // via dispose.
          }
        });

        return this.requestedDisposable;
      },
      disposeCurrentRequest: function () {
        if (this.requestedDisposable) {
          this.requestedDisposable.dispose();
          this.requestedDisposable = null;
        }
      }
    });

    return ControlledSubject;
  }(Observable));

  /**
   * Attaches a controller to the observable sequence with the ability to queue.
   * @example
   * var source = Rx.Observable.interval(100).controlled();
   * source.request(3); // Reads 3 values
   * @param {bool} enableQueue truthy value to determine if values should be queued pending the next request
   * @param {Scheduler} scheduler determines how the requests will be scheduled
   * @returns {Observable} The observable sequence which only propagates values on request.
   */
  observableProto.controlled = function (enableQueue, scheduler) {

    if (enableQueue && isScheduler(enableQueue)) {
      scheduler = enableQueue;
      enableQueue = true;
    }

    if (enableQueue == null) {  enableQueue = true; }
    return new ControlledObservable(this, enableQueue, scheduler);
  };

  var StopAndWaitObservable = (function (__super__) {
    inherits(StopAndWaitObservable, __super__);
    function StopAndWaitObservable (source) {
      __super__.call(this);
      this.source = source;
    }

    function scheduleMethod(s, self) {
      return self.source.request(1);
    }

    StopAndWaitObservable.prototype._subscribe = function (o) {
      this.subscription = this.source.subscribe(new StopAndWaitObserver(o, this, this.subscription));
      return new BinaryDisposable(
        this.subscription,
        defaultScheduler.schedule(this, scheduleMethod)
      );
    };

    var StopAndWaitObserver = (function (__sub__) {
      inherits(StopAndWaitObserver, __sub__);
      function StopAndWaitObserver (observer, observable, cancel) {
        __sub__.call(this);
        this.observer = observer;
        this.observable = observable;
        this.cancel = cancel;
        this.scheduleDisposable = null;
      }

      StopAndWaitObserver.prototype.completed = function () {
        this.observer.onCompleted();
        this.dispose();
      };

      StopAndWaitObserver.prototype.error = function (error) {
        this.observer.onError(error);
        this.dispose();
      };

      function innerScheduleMethod(s, self) {
        return self.observable.source.request(1);
      }

      StopAndWaitObserver.prototype.next = function (value) {
        this.observer.onNext(value);
        this.scheduleDisposable = defaultScheduler.schedule(this, innerScheduleMethod);
      };

      StopAndWaitObserver.dispose = function () {
        this.observer = null;
        if (this.cancel) {
          this.cancel.dispose();
          this.cancel = null;
        }
        if (this.scheduleDisposable) {
          this.scheduleDisposable.dispose();
          this.scheduleDisposable = null;
        }
        __sub__.prototype.dispose.call(this);
      };

      return StopAndWaitObserver;
    }(AbstractObserver));

    return StopAndWaitObservable;
  }(Observable));


  /**
   * Attaches a stop and wait observable to the current observable.
   * @returns {Observable} A stop and wait observable.
   */
  ControlledObservable.prototype.stopAndWait = function () {
    return new StopAndWaitObservable(this);
  };

  var WindowedObservable = (function (__super__) {
    inherits(WindowedObservable, __super__);
    function WindowedObservable(source, windowSize) {
      __super__.call(this);
      this.source = source;
      this.windowSize = windowSize;
    }

    function scheduleMethod(s, self) {
      return self.source.request(self.windowSize);
    }

    WindowedObservable.prototype._subscribe = function (o) {
      this.subscription = this.source.subscribe(new WindowedObserver(o, this, this.subscription));
      return new BinaryDisposable(
        this.subscription,
        defaultScheduler.schedule(this, scheduleMethod)
      );
    };

    var WindowedObserver = (function (__sub__) {
      inherits(WindowedObserver, __sub__);
      function WindowedObserver(observer, observable, cancel) {
        this.observer = observer;
        this.observable = observable;
        this.cancel = cancel;
        this.received = 0;
        this.scheduleDisposable = null;
        __sub__.call(this);
      }

      WindowedObserver.prototype.completed = function () {
        this.observer.onCompleted();
        this.dispose();
      };

      WindowedObserver.prototype.error = function (error) {
        this.observer.onError(error);
        this.dispose();
      };

      function innerScheduleMethod(s, self) {
        return self.observable.source.request(self.observable.windowSize);
      }

      WindowedObserver.prototype.next = function (value) {
        this.observer.onNext(value);
        this.received = ++this.received % this.observable.windowSize;
        this.received === 0 && (this.scheduleDisposable = defaultScheduler.schedule(this, innerScheduleMethod));
      };

      WindowedObserver.prototype.dispose = function () {
        this.observer = null;
        if (this.cancel) {
          this.cancel.dispose();
          this.cancel = null;
        }
        if (this.scheduleDisposable) {
          this.scheduleDisposable.dispose();
          this.scheduleDisposable = null;
        }
        __sub__.prototype.dispose.call(this);
      };

      return WindowedObserver;
    }(AbstractObserver));

    return WindowedObservable;
  }(Observable));

  /**
   * Creates a sliding windowed observable based upon the window size.
   * @param {Number} windowSize The number of items in the window
   * @returns {Observable} A windowed observable based upon the window size.
   */
  ControlledObservable.prototype.windowed = function (windowSize) {
    return new WindowedObservable(this, windowSize);
  };

  /**
   * Pipes the existing Observable sequence into a Node.js Stream.
   * @param {Stream} dest The destination Node.js stream.
   * @returns {Stream} The destination stream.
   */
  observableProto.pipe = function (dest) {
    var source = this.pausableBuffered();

    function onDrain() {
      source.resume();
    }

    dest.addListener('drain', onDrain);

    source.subscribe(
      function (x) {
        !dest.write(x) && source.pause();
      },
      function (err) {
        dest.emit('error', err);
      },
      function () {
        // Hack check because STDIO is not closable
        !dest._isStdio && dest.end();
        dest.removeListener('drain', onDrain);
      });

    source.resume();

    return dest;
  };

  var MulticastObservable = (function (__super__) {
    inherits(MulticastObservable, __super__);
    function MulticastObservable(source, fn1, fn2) {
      this.source = source;
      this._fn1 = fn1;
      this._fn2 = fn2;
      __super__.call(this);
    }

    MulticastObservable.prototype.subscribeCore = function (o) {
      var connectable = this.source.multicast(this._fn1());
      return new BinaryDisposable(this._fn2(connectable).subscribe(o), connectable.connect());
    };

    return MulticastObservable;
  }(ObservableBase));

  /**
   * Multicasts the source sequence notifications through an instantiated subject into all uses of the sequence within a selector function. Each
   * subscription to the resulting sequence causes a separate multicast invocation, exposing the sequence resulting from the selector function's
   * invocation. For specializations with fixed subject types, see Publish, PublishLast, and Replay.
   *
   * @example
   * 1 - res = source.multicast(observable);
   * 2 - res = source.multicast(function () { return new Subject(); }, function (x) { return x; });
   *
   * @param {Function|Subject} subjectOrSubjectSelector
   * Factory function to create an intermediate subject through which the source sequence's elements will be multicast to the selector function.
   * Or:
   * Subject to push source elements into.
   *
   * @param {Function} [selector] Optional selector function which can use the multicasted source sequence subject to the policies enforced by the created subject. Specified only if <paramref name="subjectOrSubjectSelector" is a factory function.
   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
   */
  observableProto.multicast = function (subjectOrSubjectSelector, selector) {
    return isFunction(subjectOrSubjectSelector) ?
      new MulticastObservable(this, subjectOrSubjectSelector, selector) :
      new ConnectableObservable(this, subjectOrSubjectSelector);
  };

  /**
   * Returns an observable sequence that is the result of invoking the selector on a connectable observable sequence that shares a single subscription to the underlying sequence.
   * This operator is a specialization of Multicast using a regular Subject.
   *
   * @example
   * var resres = source.publish();
   * var res = source.publish(function (x) { return x; });
   *
   * @param {Function} [selector] Selector function which can use the multicasted source sequence as many times as needed, without causing multiple subscriptions to the source sequence. Subscribers to the given source will receive all notifications of the source from the time of the subscription on.
   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
   */
  observableProto.publish = function (selector) {
    return selector && isFunction(selector) ?
      this.multicast(function () { return new Subject(); }, selector) :
      this.multicast(new Subject());
  };

  /**
   * Returns an observable sequence that shares a single subscription to the underlying sequence.
   * This operator is a specialization of publish which creates a subscription when the number of observers goes from zero to one, then shares that subscription with all subsequent observers until the number of observers returns to zero, at which point the subscription is disposed.
   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence.
   */
  observableProto.share = function () {
    return this.publish().refCount();
  };

  /**
   * Returns an observable sequence that is the result of invoking the selector on a connectable observable sequence that shares a single subscription to the underlying sequence containing only the last notification.
   * This operator is a specialization of Multicast using a AsyncSubject.
   *
   * @example
   * var res = source.publishLast();
   * var res = source.publishLast(function (x) { return x; });
   *
   * @param selector [Optional] Selector function which can use the multicasted source sequence as many times as needed, without causing multiple subscriptions to the source sequence. Subscribers to the given source will only receive the last notification of the source.
   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
   */
  observableProto.publishLast = function (selector) {
    return selector && isFunction(selector) ?
      this.multicast(function () { return new AsyncSubject(); }, selector) :
      this.multicast(new AsyncSubject());
  };

  /**
   * Returns an observable sequence that is the result of invoking the selector on a connectable observable sequence that shares a single subscription to the underlying sequence and starts with initialValue.
   * This operator is a specialization of Multicast using a BehaviorSubject.
   *
   * @example
   * var res = source.publishValue(42);
   * var res = source.publishValue(function (x) { return x.select(function (y) { return y * y; }) }, 42);
   *
   * @param {Function} [selector] Optional selector function which can use the multicasted source sequence as many times as needed, without causing multiple subscriptions to the source sequence. Subscribers to the given source will receive immediately receive the initial value, followed by all notifications of the source from the time of the subscription on.
   * @param {Mixed} initialValue Initial value received by observers upon subscription.
   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
   */
  observableProto.publishValue = function (initialValueOrSelector, initialValue) {
    return arguments.length === 2 ?
      this.multicast(function () {
        return new BehaviorSubject(initialValue);
      }, initialValueOrSelector) :
      this.multicast(new BehaviorSubject(initialValueOrSelector));
  };

  /**
   * Returns an observable sequence that shares a single subscription to the underlying sequence and starts with an initialValue.
   * This operator is a specialization of publishValue which creates a subscription when the number of observers goes from zero to one, then shares that subscription with all subsequent observers until the number of observers returns to zero, at which point the subscription is disposed.
   * @param {Mixed} initialValue Initial value received by observers upon subscription.
   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence.
   */
  observableProto.shareValue = function (initialValue) {
    return this.publishValue(initialValue).refCount();
  };

  /**
   * Returns an observable sequence that is the result of invoking the selector on a connectable observable sequence that shares a single subscription to the underlying sequence replaying notifications subject to a maximum time length for the replay buffer.
   * This operator is a specialization of Multicast using a ReplaySubject.
   *
   * @example
   * var res = source.replay(null, 3);
   * var res = source.replay(null, 3, 500);
   * var res = source.replay(null, 3, 500, scheduler);
   * var res = source.replay(function (x) { return x.take(6).repeat(); }, 3, 500, scheduler);
   *
   * @param selector [Optional] Selector function which can use the multicasted source sequence as many times as needed, without causing multiple subscriptions to the source sequence. Subscribers to the given source will receive all the notifications of the source subject to the specified replay buffer trimming policy.
   * @param bufferSize [Optional] Maximum element count of the replay buffer.
   * @param windowSize [Optional] Maximum time length of the replay buffer.
   * @param scheduler [Optional] Scheduler where connected observers within the selector function will be invoked on.
   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
   */
  observableProto.replay = function (selector, bufferSize, windowSize, scheduler) {
    return selector && isFunction(selector) ?
      this.multicast(function () { return new ReplaySubject(bufferSize, windowSize, scheduler); }, selector) :
      this.multicast(new ReplaySubject(bufferSize, windowSize, scheduler));
  };

  /**
   * Returns an observable sequence that shares a single subscription to the underlying sequence replaying notifications subject to a maximum time length for the replay buffer.
   * This operator is a specialization of replay which creates a subscription when the number of observers goes from zero to one, then shares that subscription with all subsequent observers until the number of observers returns to zero, at which point the subscription is disposed.
   *
   * @example
   * var res = source.shareReplay(3);
   * var res = source.shareReplay(3, 500);
   * var res = source.shareReplay(3, 500, scheduler);
   *

   * @param bufferSize [Optional] Maximum element count of the replay buffer.
   * @param window [Optional] Maximum time length of the replay buffer.
   * @param scheduler [Optional] Scheduler where connected observers within the selector function will be invoked on.
   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence.
   */
  observableProto.shareReplay = function (bufferSize, windowSize, scheduler) {
    return this.replay(null, bufferSize, windowSize, scheduler).refCount();
  };

  var InnerSubscription = function (s, o) {
    this._s = s;
    this._o = o;
  };

  InnerSubscription.prototype.dispose = function () {
    if (!this._s.isDisposed && this._o !== null) {
      var idx = this._s.observers.indexOf(this._o);
      this._s.observers.splice(idx, 1);
      this._o = null;
    }
  };

  var RefCountObservable = (function (__super__) {
    inherits(RefCountObservable, __super__);
    function RefCountObservable(source) {
      this.source = source;
      this._count = 0;
      this._connectableSubscription = null;
      __super__.call(this);
    }

    RefCountObservable.prototype.subscribeCore = function (o) {
      var subscription = this.source.subscribe(o);
      ++this._count === 1 && (this._connectableSubscription = this.source.connect());
      return new RefCountDisposable(this, subscription);
    };

    function RefCountDisposable(p, s) {
      this._p = p;
      this._s = s;
      this.isDisposed = false;
    }

    RefCountDisposable.prototype.dispose = function () {
      if (!this.isDisposed) {
        this.isDisposed = true;
        this._s.dispose();
        --this._p._count === 0 && this._p._connectableSubscription.dispose();
      }
    };

    return RefCountObservable;
  }(ObservableBase));

  var ConnectableObservable = Rx.ConnectableObservable = (function (__super__) {
    inherits(ConnectableObservable, __super__);
    function ConnectableObservable(source, subject) {
      this.source = source;
      this._connection = null;
      this._source = source.asObservable();
      this._subject = subject;
      __super__.call(this);
    }

    function ConnectDisposable(parent, subscription) {
      this._p = parent;
      this._s = subscription;
    }

    ConnectDisposable.prototype.dispose = function () {
      if (this._s) {
        this._s.dispose();
        this._s = null;
        this._p._connection = null;
      }
    };

    ConnectableObservable.prototype.connect = function () {
      if (!this._connection) {
        if (this._subject.isStopped) {
          return disposableEmpty;
        }
        var subscription = this._source.subscribe(this._subject);
        this._connection = new ConnectDisposable(this, subscription);
      }
      return this._connection;
    };

    ConnectableObservable.prototype._subscribe = function (o) {
      return this._subject.subscribe(o);
    };

    ConnectableObservable.prototype.refCount = function () {
      return new RefCountObservable(this);
    };

    return ConnectableObservable;
  }(Observable));

  /**
   * Returns an observable sequence that shares a single subscription to the underlying sequence. This observable sequence
   * can be resubscribed to, even if all prior subscriptions have ended. (unlike `.publish().refCount()`)
   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source.
   */
  observableProto.singleInstance = function() {
    var source = this, hasObservable = false, observable;

    function getObservable() {
      if (!hasObservable) {
        hasObservable = true;
        observable = source['finally'](function() { hasObservable = false; }).publish().refCount();
      }
      return observable;
    }

    return new AnonymousObservable(function(o) {
      return getObservable().subscribe(o);
    });
  };

  /**
   *  Correlates the elements of two sequences based on overlapping durations.
   *
   *  @param {Observable} right The right observable sequence to join elements for.
   *  @param {Function} leftDurationSelector A function to select the duration (expressed as an observable sequence) of each element of the left observable sequence, used to determine overlap.
   *  @param {Function} rightDurationSelector A function to select the duration (expressed as an observable sequence) of each element of the right observable sequence, used to determine overlap.
   *  @param {Function} resultSelector A function invoked to compute a result element for any two overlapping elements of the left and right observable sequences. The parameters passed to the function correspond with the elements from the left and right source sequences for which overlap occurs.
   *  @returns {Observable} An observable sequence that contains result elements computed from source elements that have an overlapping duration.
   */
  observableProto.join = function (right, leftDurationSelector, rightDurationSelector, resultSelector) {
    var left = this;
    return new AnonymousObservable(function (o) {
      var group = new CompositeDisposable();
      var leftDone = false, rightDone = false;
      var leftId = 0, rightId = 0;
      var leftMap = new Map(), rightMap = new Map();
      var handleError = function (e) { o.onError(e); };

      group.add(left.subscribe(
        function (value) {
          var id = leftId++, md = new SingleAssignmentDisposable();

          leftMap.set(id, value);
          group.add(md);

          var duration = tryCatch(leftDurationSelector)(value);
          if (duration === errorObj) { return o.onError(duration.e); }

          md.setDisposable(duration.take(1).subscribe(
            noop,
            handleError,
            function () {
              leftMap['delete'](id) && leftMap.size === 0 && leftDone && o.onCompleted();
              group.remove(md);
            }));

          rightMap.forEach(function (v) {
            var result = tryCatch(resultSelector)(value, v);
            if (result === errorObj) { return o.onError(result.e); }
            o.onNext(result);
          });
        },
        handleError,
        function () {
          leftDone = true;
          (rightDone || leftMap.size === 0) && o.onCompleted();
        })
      );

      group.add(right.subscribe(
        function (value) {
          var id = rightId++, md = new SingleAssignmentDisposable();

          rightMap.set(id, value);
          group.add(md);

          var duration = tryCatch(rightDurationSelector)(value);
          if (duration === errorObj) { return o.onError(duration.e); }

          md.setDisposable(duration.take(1).subscribe(
            noop,
            handleError,
            function () {
              rightMap['delete'](id) && rightMap.size === 0 && rightDone && o.onCompleted();
              group.remove(md);
            }));

          leftMap.forEach(function (v) {
            var result = tryCatch(resultSelector)(v, value);
            if (result === errorObj) { return o.onError(result.e); }
            o.onNext(result);
          });
        },
        handleError,
        function () {
          rightDone = true;
          (leftDone || rightMap.size === 0) && o.onCompleted();
        })
      );
      return group;
    }, left);
  };

  /**
   *  Correlates the elements of two sequences based on overlapping durations, and groups the results.
   *
   *  @param {Observable} right The right observable sequence to join elements for.
   *  @param {Function} leftDurationSelector A function to select the duration (expressed as an observable sequence) of each element of the left observable sequence, used to determine overlap.
   *  @param {Function} rightDurationSelector A function to select the duration (expressed as an observable sequence) of each element of the right observable sequence, used to determine overlap.
   *  @param {Function} resultSelector A function invoked to compute a result element for any element of the left sequence with overlapping elements from the right observable sequence. The first parameter passed to the function is an element of the left sequence. The second parameter passed to the function is an observable sequence with elements from the right sequence that overlap with the left sequence's element.
   *  @returns {Observable} An observable sequence that contains result elements computed from source elements that have an overlapping duration.
   */
  observableProto.groupJoin = function (right, leftDurationSelector, rightDurationSelector, resultSelector) {
    var left = this;
    return new AnonymousObservable(function (o) {
      var group = new CompositeDisposable();
      var r = new RefCountDisposable(group);
      var leftMap = new Map(), rightMap = new Map();
      var leftId = 0, rightId = 0;
      var handleError = function (e) { return function (v) { v.onError(e); }; };

      function handleError(e) { };

      group.add(left.subscribe(
        function (value) {
          var s = new Subject();
          var id = leftId++;
          leftMap.set(id, s);

          var result = tryCatch(resultSelector)(value, addRef(s, r));
          if (result === errorObj) {
            leftMap.forEach(handleError(result.e));
            return o.onError(result.e);
          }
          o.onNext(result);

          rightMap.forEach(function (v) { s.onNext(v); });

          var md = new SingleAssignmentDisposable();
          group.add(md);

          var duration = tryCatch(leftDurationSelector)(value);
          if (duration === errorObj) {
            leftMap.forEach(handleError(duration.e));
            return o.onError(duration.e);
          }

          md.setDisposable(duration.take(1).subscribe(
            noop,
            function (e) {
              leftMap.forEach(handleError(e));
              o.onError(e);
            },
            function () {
              leftMap['delete'](id) && s.onCompleted();
              group.remove(md);
            }));
        },
        function (e) {
          leftMap.forEach(handleError(e));
          o.onError(e);
        },
        function () { o.onCompleted(); })
      );

      group.add(right.subscribe(
        function (value) {
          var id = rightId++;
          rightMap.set(id, value);

          var md = new SingleAssignmentDisposable();
          group.add(md);

          var duration = tryCatch(rightDurationSelector)(value);
          if (duration === errorObj) {
            leftMap.forEach(handleError(duration.e));
            return o.onError(duration.e);
          }

          md.setDisposable(duration.take(1).subscribe(
            noop,
            function (e) {
              leftMap.forEach(handleError(e));
              o.onError(e);
            },
            function () {
              rightMap['delete'](id);
              group.remove(md);
            }));

          leftMap.forEach(function (v) { v.onNext(value); });
        },
        function (e) {
          leftMap.forEach(handleError(e));
          o.onError(e);
        })
      );

      return r;
    }, left);
  };

  function toArray(x) { return x.toArray(); }

  /**
   *  Projects each element of an observable sequence into zero or more buffers.
   *  @param {Mixed} bufferOpeningsOrClosingSelector Observable sequence whose elements denote the creation of new windows, or, a function invoked to define the boundaries of the produced windows (a new window is started when the previous one is closed, resulting in non-overlapping windows).
   *  @param {Function} [bufferClosingSelector] A function invoked to define the closing of each produced window. If a closing selector function is specified for the first parameter, this parameter is ignored.
   *  @returns {Observable} An observable sequence of windows.
   */
  observableProto.buffer = function () {
    return this.window.apply(this, arguments)
      .flatMap(toArray);
  };

  /**
   *  Projects each element of an observable sequence into zero or more windows.
   *
   *  @param {Mixed} windowOpeningsOrClosingSelector Observable sequence whose elements denote the creation of new windows, or, a function invoked to define the boundaries of the produced windows (a new window is started when the previous one is closed, resulting in non-overlapping windows).
   *  @param {Function} [windowClosingSelector] A function invoked to define the closing of each produced window. If a closing selector function is specified for the first parameter, this parameter is ignored.
   *  @returns {Observable} An observable sequence of windows.
   */
  observableProto.window = function (windowOpeningsOrClosingSelector, windowClosingSelector) {
    if (arguments.length === 1 && typeof arguments[0] !== 'function') {
      return observableWindowWithBoundaries.call(this, windowOpeningsOrClosingSelector);
    }
    return typeof windowOpeningsOrClosingSelector === 'function' ?
      observableWindowWithClosingSelector.call(this, windowOpeningsOrClosingSelector) :
      observableWindowWithOpenings.call(this, windowOpeningsOrClosingSelector, windowClosingSelector);
  };

  function observableWindowWithOpenings(windowOpenings, windowClosingSelector) {
    return windowOpenings.groupJoin(this, windowClosingSelector, observableEmpty, function (_, win) {
      return win;
    });
  }

  function observableWindowWithBoundaries(windowBoundaries) {
    var source = this;
    return new AnonymousObservable(function (observer) {
      var win = new Subject(),
        d = new CompositeDisposable(),
        r = new RefCountDisposable(d);

      observer.onNext(addRef(win, r));

      d.add(source.subscribe(function (x) {
        win.onNext(x);
      }, function (err) {
        win.onError(err);
        observer.onError(err);
      }, function () {
        win.onCompleted();
        observer.onCompleted();
      }));

      isPromise(windowBoundaries) && (windowBoundaries = observableFromPromise(windowBoundaries));

      d.add(windowBoundaries.subscribe(function (w) {
        win.onCompleted();
        win = new Subject();
        observer.onNext(addRef(win, r));
      }, function (err) {
        win.onError(err);
        observer.onError(err);
      }, function () {
        win.onCompleted();
        observer.onCompleted();
      }));

      return r;
    }, source);
  }

  function observableWindowWithClosingSelector(windowClosingSelector) {
    var source = this;
    return new AnonymousObservable(function (observer) {
      var m = new SerialDisposable(),
        d = new CompositeDisposable(m),
        r = new RefCountDisposable(d),
        win = new Subject();
      observer.onNext(addRef(win, r));
      d.add(source.subscribe(function (x) {
          win.onNext(x);
      }, function (err) {
          win.onError(err);
          observer.onError(err);
      }, function () {
          win.onCompleted();
          observer.onCompleted();
      }));

      function createWindowClose () {
        var windowClose;
        try {
          windowClose = windowClosingSelector();
        } catch (e) {
          observer.onError(e);
          return;
        }

        isPromise(windowClose) && (windowClose = observableFromPromise(windowClose));

        var m1 = new SingleAssignmentDisposable();
        m.setDisposable(m1);
        m1.setDisposable(windowClose.take(1).subscribe(noop, function (err) {
          win.onError(err);
          observer.onError(err);
        }, function () {
          win.onCompleted();
          win = new Subject();
          observer.onNext(addRef(win, r));
          createWindowClose();
        }));
      }

      createWindowClose();
      return r;
    }, source);
  }

  var PairwiseObservable = (function (__super__) {
    inherits(PairwiseObservable, __super__);
    function PairwiseObservable(source) {
      this.source = source;
      __super__.call(this);
    }

    PairwiseObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new PairwiseObserver(o));
    };

    return PairwiseObservable;
  }(ObservableBase));

  var PairwiseObserver = (function(__super__) {
    inherits(PairwiseObserver, __super__);
    function PairwiseObserver(o) {
      this._o = o;
      this._p = null;
      this._hp = false;
      __super__.call(this);
    }

    PairwiseObserver.prototype.next = function (x) {
      if (this._hp) {
        this._o.onNext([this._p, x]);
      } else {
        this._hp = true;
      }
      this._p = x;
    };
    PairwiseObserver.prototype.error = function (err) { this._o.onError(err); };
    PairwiseObserver.prototype.completed = function () { this._o.onCompleted(); };

    return PairwiseObserver;
  }(AbstractObserver));

  /**
   * Returns a new observable that triggers on the second and subsequent triggerings of the input observable.
   * The Nth triggering of the input observable passes the arguments from the N-1th and Nth triggering as a pair.
   * The argument passed to the N-1th triggering is held in hidden internal state until the Nth triggering occurs.
   * @returns {Observable} An observable that triggers on successive pairs of observations from the input observable as an array.
   */
  observableProto.pairwise = function () {
    return new PairwiseObservable(this);
  };

  /**
   * Returns two observables which partition the observations of the source by the given function.
   * The first will trigger observations for those values for which the predicate returns true.
   * The second will trigger observations for those values where the predicate returns false.
   * The predicate is executed once for each subscribed observer.
   * Both also propagate all error observations arising from the source and each completes
   * when the source completes.
   * @param {Function} predicate
   *    The function to determine which output Observable will trigger a particular observation.
   * @returns {Array}
   *    An array of observables. The first triggers when the predicate returns true,
   *    and the second triggers when the predicate returns false.
  */
  observableProto.partition = function(predicate, thisArg) {
    var fn = bindCallback(predicate, thisArg, 3);
    return [
      this.filter(predicate, thisArg),
      this.filter(function (x, i, o) { return !fn(x, i, o); })
    ];
  };

  var WhileEnumerable = (function(__super__) {
    inherits(WhileEnumerable, __super__);
    function WhileEnumerable(c, s) {
      this.c = c;
      this.s = s;
    }
    WhileEnumerable.prototype[$iterator$] = function () {
      var self = this;
      return {
        next: function () {
          return self.c() ?
           { done: false, value: self.s } :
           { done: true, value: void 0 };
        }
      };
    };
    return WhileEnumerable;
  }(Enumerable));
  
  function enumerableWhile(condition, source) {
    return new WhileEnumerable(condition, source);
  }  

   /**
   *  Returns an observable sequence that is the result of invoking the selector on the source sequence, without sharing subscriptions.
   *  This operator allows for a fluent style of writing queries that use the same sequence multiple times.
   *
   * @param {Function} selector Selector function which can use the source sequence as many times as needed, without sharing subscriptions to the source sequence.
   * @returns {Observable} An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
   */
  observableProto.letBind = observableProto['let'] = function (func) {
    return func(this);
  };

   /**
   *  Determines whether an observable collection contains values. 
   *
   * @example
   *  1 - res = Rx.Observable.if(condition, obs1);
   *  2 - res = Rx.Observable.if(condition, obs1, obs2);
   *  3 - res = Rx.Observable.if(condition, obs1, scheduler);
   * @param {Function} condition The condition which determines if the thenSource or elseSource will be run.
   * @param {Observable} thenSource The observable sequence or Promise that will be run if the condition function returns true.
   * @param {Observable} [elseSource] The observable sequence or Promise that will be run if the condition function returns false. If this is not provided, it defaults to Rx.Observabe.Empty with the specified scheduler.
   * @returns {Observable} An observable sequence which is either the thenSource or elseSource.
   */
  Observable['if'] = function (condition, thenSource, elseSourceOrScheduler) {
    return observableDefer(function () {
      elseSourceOrScheduler || (elseSourceOrScheduler = observableEmpty());

      isPromise(thenSource) && (thenSource = observableFromPromise(thenSource));
      isPromise(elseSourceOrScheduler) && (elseSourceOrScheduler = observableFromPromise(elseSourceOrScheduler));

      // Assume a scheduler for empty only
      typeof elseSourceOrScheduler.now === 'function' && (elseSourceOrScheduler = observableEmpty(elseSourceOrScheduler));
      return condition() ? thenSource : elseSourceOrScheduler;
    });
  };

   /**
   *  Concatenates the observable sequences obtained by running the specified result selector for each element in source.
   * There is an alias for this method called 'forIn' for browsers <IE9
   * @param {Array} sources An array of values to turn into an observable sequence.
   * @param {Function} resultSelector A function to apply to each item in the sources array to turn it into an observable sequence.
   * @returns {Observable} An observable sequence from the concatenated observable sequences.
   */
  Observable['for'] = Observable.forIn = function (sources, resultSelector, thisArg) {
    return enumerableOf(sources, resultSelector, thisArg).concat();
  };

   /**
   *  Repeats source as long as condition holds emulating a while loop.
   * There is an alias for this method called 'whileDo' for browsers <IE9
   *
   * @param {Function} condition The condition which determines if the source will be repeated.
   * @param {Observable} source The observable sequence that will be run if the condition function returns true.
   * @returns {Observable} An observable sequence which is repeated as long as the condition holds.
   */
  var observableWhileDo = Observable['while'] = Observable.whileDo = function (condition, source) {
    isPromise(source) && (source = observableFromPromise(source));
    return enumerableWhile(condition, source).concat();
  };

   /**
   *  Repeats source as long as condition holds emulating a do while loop.
   *
   * @param {Function} condition The condition which determines if the source will be repeated.
   * @param {Observable} source The observable sequence that will be run if the condition function returns true.
   * @returns {Observable} An observable sequence which is repeated as long as the condition holds.
   */
  observableProto.doWhile = function (condition) {
    return observableConcat([this, observableWhileDo(condition, this)]);
  };

   /**
   *  Uses selector to determine which source in sources to use.
   * @param {Function} selector The function which extracts the value for to test in a case statement.
   * @param {Array} sources A object which has keys which correspond to the case statement labels.
   * @param {Observable} [elseSource] The observable sequence or Promise that will be run if the sources are not matched. If this is not provided, it defaults to Rx.Observabe.empty with the specified scheduler.
   *
   * @returns {Observable} An observable sequence which is determined by a case statement.
   */
  Observable['case'] = function (selector, sources, defaultSourceOrScheduler) {
    return observableDefer(function () {
      isPromise(defaultSourceOrScheduler) && (defaultSourceOrScheduler = observableFromPromise(defaultSourceOrScheduler));
      defaultSourceOrScheduler || (defaultSourceOrScheduler = observableEmpty());

      isScheduler(defaultSourceOrScheduler) && (defaultSourceOrScheduler = observableEmpty(defaultSourceOrScheduler));

      var result = sources[selector()];
      isPromise(result) && (result = observableFromPromise(result));

      return result || defaultSourceOrScheduler;
    });
  };

  var ExpandObservable = (function(__super__) {
    inherits(ExpandObservable, __super__);
    function ExpandObservable(source, fn, scheduler) {
      this.source = source;
      this._fn = fn;
      this._scheduler = scheduler;
      __super__.call(this);
    }

    function scheduleRecursive(args, recurse) {
      var state = args[0], self = args[1];
      var work;
      if (state.q.length > 0) {
        work = state.q.shift();
      } else {
        state.isAcquired = false;
        return;
      }
      var m1 = new SingleAssignmentDisposable();
      state.d.add(m1);
      m1.setDisposable(work.subscribe(new ExpandObserver(state, self, m1)));
      recurse([state, self]);
    }

    ExpandObservable.prototype._ensureActive = function (state) {
      var isOwner = false;
      if (state.q.length > 0) {
        isOwner = !state.isAcquired;
        state.isAcquired = true;
      }
      isOwner && state.m.setDisposable(this._scheduler.scheduleRecursive([state, this], scheduleRecursive));
    };

    ExpandObservable.prototype.subscribeCore = function (o) {
      var m = new SerialDisposable(),
        d = new CompositeDisposable(m),
        state = {
          q: [],
          m: m,
          d: d,
          activeCount: 0,
          isAcquired: false,
          o: o
        };

      state.q.push(this.source);
      state.activeCount++;
      this._ensureActive(state);
      return d;
    };

    return ExpandObservable;
  }(ObservableBase));

  var ExpandObserver = (function(__super__) {
    inherits(ExpandObserver, __super__);
    function ExpandObserver(state, parent, m1) {
      this._s = state;
      this._p = parent;
      this._m1 = m1;
      __super__.call(this);
    }

    ExpandObserver.prototype.next = function (x) {
      this._s.o.onNext(x);
      var result = tryCatch(this._p._fn)(x);
      if (result === errorObj) { return this._s.o.onError(result.e); }
      this._s.q.push(result);
      this._s.activeCount++;
      this._p._ensureActive(this._s);
    };

    ExpandObserver.prototype.error = function (e) {
      this._s.o.onError(e);
    };

    ExpandObserver.prototype.completed = function () {
      this._s.d.remove(this._m1);
      this._s.activeCount--;
      this._s.activeCount === 0 && this._s.o.onCompleted();
    };

    return ExpandObserver;
  }(AbstractObserver));

   /**
   *  Expands an observable sequence by recursively invoking selector.
   *
   * @param {Function} selector Selector function to invoke for each produced element, resulting in another sequence to which the selector will be invoked recursively again.
   * @param {Scheduler} [scheduler] Scheduler on which to perform the expansion. If not provided, this defaults to the current thread scheduler.
   * @returns {Observable} An observable sequence containing all the elements produced by the recursive expansion.
   */
  observableProto.expand = function (selector, scheduler) {
    isScheduler(scheduler) || (scheduler = currentThreadScheduler);
    return new ExpandObservable(this, selector, scheduler);
  };

  function argumentsToArray() {
    var len = arguments.length, args = new Array(len);
    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
    return args;
  }

  var ForkJoinObservable = (function (__super__) {
    inherits(ForkJoinObservable, __super__);
    function ForkJoinObservable(sources, cb) {
      this._sources = sources;
      this._cb = cb;
      __super__.call(this);
    }

    ForkJoinObservable.prototype.subscribeCore = function (o) {
      if (this._sources.length === 0) {
        o.onCompleted();
        return disposableEmpty;
      }

      var count = this._sources.length;
      var state = {
        finished: false,
        hasResults: new Array(count),
        hasCompleted: new Array(count),
        results: new Array(count)
      };

      var subscriptions = new CompositeDisposable();
      for (var i = 0, len = this._sources.length; i < len; i++) {
        var source = this._sources[i];
        isPromise(source) && (source = observableFromPromise(source));
        subscriptions.add(source.subscribe(new ForkJoinObserver(o, state, i, this._cb, subscriptions)));
      }

      return subscriptions;
    };

    return ForkJoinObservable;
  }(ObservableBase));

  var ForkJoinObserver = (function(__super__) {
    inherits(ForkJoinObserver, __super__);
    function ForkJoinObserver(o, s, i, cb, subs) {
      this._o = o;
      this._s = s;
      this._i = i;
      this._cb = cb;
      this._subs = subs;
      __super__.call(this);
    }

    ForkJoinObserver.prototype.next = function (x) {
      if (!this._s.finished) {
        this._s.hasResults[this._i] = true;
        this._s.results[this._i] = x;
      }
    };

    ForkJoinObserver.prototype.error = function (e) {
      this._s.finished = true;
      this._o.onError(e);
      this._subs.dispose();
    };

    ForkJoinObserver.prototype.completed = function () {
      if (!this._s.finished) {
        if (!this._s.hasResults[this._i]) {
          return this._o.onCompleted();
        }
        this._s.hasCompleted[this._i] = true;
        for (var i = 0; i < this._s.results.length; i++) {
          if (!this._s.hasCompleted[i]) { return; }
        }
        this._s.finished = true;

        var res = tryCatch(this._cb).apply(null, this._s.results);
        if (res === errorObj) { return this._o.onError(res.e); }

        this._o.onNext(res);
        this._o.onCompleted();
      }
    };

    return ForkJoinObserver;
  }(AbstractObserver));

   /**
   *  Runs all observable sequences in parallel and collect their last elements.
   *
   * @example
   *  1 - res = Rx.Observable.forkJoin([obs1, obs2]);
   *  1 - res = Rx.Observable.forkJoin(obs1, obs2, ...);
   * @returns {Observable} An observable sequence with an array collecting the last elements of all the input sequences.
   */
  Observable.forkJoin = function () {
    var len = arguments.length, args = new Array(len);
    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
    var resultSelector = isFunction(args[len - 1]) ? args.pop() : argumentsToArray;
    Array.isArray(args[0]) && (args = args[0]);
    return new ForkJoinObservable(args, resultSelector);
  };

   /**
   *  Runs two observable sequences in parallel and combines their last elemenets.
   * @param {Observable} second Second observable sequence.
   * @param {Function} resultSelector Result selector function to invoke with the last elements of both sequences.
   * @returns {Observable} An observable sequence with the result of calling the selector function with the last elements of both input sequences.
   */
  observableProto.forkJoin = function () {
    var len = arguments.length, args = new Array(len);
    for(var i = 0; i < len; i++) { args[i] = arguments[i]; }
    if (Array.isArray(args[0])) {
      args[0].unshift(this);
    } else {
      args.unshift(this);
    }
    return Observable.forkJoin.apply(null, args);
  };

  /**
   * Comonadic bind operator.
   * @param {Function} selector A transform function to apply to each element.
   * @param {Object} scheduler Scheduler used to execute the operation. If not specified, defaults to the ImmediateScheduler.
   * @returns {Observable} An observable sequence which results from the comonadic bind operation.
   */
  observableProto.manySelect = observableProto.extend = function (selector, scheduler) {
    isScheduler(scheduler) || (scheduler = Rx.Scheduler.immediate);
    var source = this;
    return observableDefer(function () {
      var chain;

      return source
        .map(function (x) {
          var curr = new ChainObservable(x);

          chain && chain.onNext(x);
          chain = curr;

          return curr;
        })
        .tap(
          noop,
          function (e) { chain && chain.onError(e); },
          function () { chain && chain.onCompleted(); }
        )
        .observeOn(scheduler)
        .map(selector);
    }, source);
  };

  var ChainObservable = (function (__super__) {
    inherits(ChainObservable, __super__);
    function ChainObservable(head) {
      __super__.call(this);
      this.head = head;
      this.tail = new AsyncSubject();
    }

    addProperties(ChainObservable.prototype, Observer, {
      _subscribe: function (o) {
        var g = new CompositeDisposable();
        g.add(currentThreadScheduler.schedule(this, function (_, self) {
          o.onNext(self.head);
          g.add(self.tail.mergeAll().subscribe(o));
        }));

        return g;
      },
      onCompleted: function () {
        this.onNext(Observable.empty());
      },
      onError: function (e) {
        this.onNext(Observable['throw'](e));
      },
      onNext: function (v) {
        this.tail.onNext(v);
        this.tail.onCompleted();
      }
    });

    return ChainObservable;

  }(Observable));

  var Map = root.Map || (function () {
    function Map() {
      this.size = 0;
      this._values = [];
      this._keys = [];
    }

    Map.prototype['delete'] = function (key) {
      var i = this._keys.indexOf(key);
      if (i === -1) { return false; }
      this._values.splice(i, 1);
      this._keys.splice(i, 1);
      this.size--;
      return true;
    };

    Map.prototype.get = function (key) {
      var i = this._keys.indexOf(key);
      return i === -1 ? undefined : this._values[i];
    };

    Map.prototype.set = function (key, value) {
      var i = this._keys.indexOf(key);
      if (i === -1) {
        this._keys.push(key);
        this._values.push(value);
        this.size++;
      } else {
        this._values[i] = value;
      }
      return this;
    };

    Map.prototype.forEach = function (cb, thisArg) {
      for (var i = 0; i < this.size; i++) {
        cb.call(thisArg, this._values[i], this._keys[i]);
      }
    };

    return Map;
  }());

  /**
   * @constructor
   * Represents a join pattern over observable sequences.
   */
  function Pattern(patterns) {
    this.patterns = patterns;
  }

  /**
   *  Creates a pattern that matches the current plan matches and when the specified observable sequences has an available value.
   *  @param other Observable sequence to match in addition to the current pattern.
   *  @return {Pattern} Pattern object that matches when all observable sequences in the pattern have an available value.
   */
  Pattern.prototype.and = function (other) {
    return new Pattern(this.patterns.concat(other));
  };

  /**
   *  Matches when all observable sequences in the pattern (specified using a chain of and operators) have an available value and projects the values.
   *  @param {Function} selector Selector that will be invoked with available values from the source sequences, in the same order of the sequences in the pattern.
   *  @return {Plan} Plan that produces the projected values, to be fed (with other plans) to the when operator.
   */
  Pattern.prototype.thenDo = function (selector) {
    return new Plan(this, selector);
  };

  function Plan(expression, selector) {
    this.expression = expression;
    this.selector = selector;
  }

  function handleOnError(o) { return function (e) { o.onError(e); }; }
  function handleOnNext(self, observer) {
    return function onNext () {
      var result = tryCatch(self.selector).apply(self, arguments);
      if (result === errorObj) { return observer.onError(result.e); }
      observer.onNext(result);
    };
  }

  Plan.prototype.activate = function (externalSubscriptions, observer, deactivate) {
    var joinObservers = [], errHandler = handleOnError(observer);
    for (var i = 0, len = this.expression.patterns.length; i < len; i++) {
      joinObservers.push(planCreateObserver(externalSubscriptions, this.expression.patterns[i], errHandler));
    }
    var activePlan = new ActivePlan(joinObservers, handleOnNext(this, observer), function () {
      for (var j = 0, jlen = joinObservers.length; j < jlen; j++) {
        joinObservers[j].removeActivePlan(activePlan);
      }
      deactivate(activePlan);
    });
    for (i = 0, len = joinObservers.length; i < len; i++) {
      joinObservers[i].addActivePlan(activePlan);
    }
    return activePlan;
  };

  function planCreateObserver(externalSubscriptions, observable, onError) {
    var entry = externalSubscriptions.get(observable);
    if (!entry) {
      var observer = new JoinObserver(observable, onError);
      externalSubscriptions.set(observable, observer);
      return observer;
    }
    return entry;
  }

  function ActivePlan(joinObserverArray, onNext, onCompleted) {
    this.joinObserverArray = joinObserverArray;
    this.onNext = onNext;
    this.onCompleted = onCompleted;
    this.joinObservers = new Map();
    for (var i = 0, len = this.joinObserverArray.length; i < len; i++) {
      var joinObserver = this.joinObserverArray[i];
      this.joinObservers.set(joinObserver, joinObserver);
    }
  }

  ActivePlan.prototype.dequeue = function () {
    this.joinObservers.forEach(function (v) { v.queue.shift(); });
  };

  ActivePlan.prototype.match = function () {
    var i, len, hasValues = true;
    for (i = 0, len = this.joinObserverArray.length; i < len; i++) {
      if (this.joinObserverArray[i].queue.length === 0) {
        hasValues = false;
        break;
      }
    }
    if (hasValues) {
      var firstValues = [],
          isCompleted = false;
      for (i = 0, len = this.joinObserverArray.length; i < len; i++) {
        firstValues.push(this.joinObserverArray[i].queue[0]);
        this.joinObserverArray[i].queue[0].kind === 'C' && (isCompleted = true);
      }
      if (isCompleted) {
        this.onCompleted();
      } else {
        this.dequeue();
        var values = [];
        for (i = 0, len = firstValues.length; i < firstValues.length; i++) {
          values.push(firstValues[i].value);
        }
        this.onNext.apply(this, values);
      }
    }
  };

  var JoinObserver = (function (__super__) {
    inherits(JoinObserver, __super__);

    function JoinObserver(source, onError) {
      __super__.call(this);
      this.source = source;
      this.onError = onError;
      this.queue = [];
      this.activePlans = [];
      this.subscription = new SingleAssignmentDisposable();
      this.isDisposed = false;
    }

    var JoinObserverPrototype = JoinObserver.prototype;

    JoinObserverPrototype.next = function (notification) {
      if (!this.isDisposed) {
        if (notification.kind === 'E') {
          return this.onError(notification.error);
        }
        this.queue.push(notification);
        var activePlans = this.activePlans.slice(0);
        for (var i = 0, len = activePlans.length; i < len; i++) {
          activePlans[i].match();
        }
      }
    };

    JoinObserverPrototype.error = noop;
    JoinObserverPrototype.completed = noop;

    JoinObserverPrototype.addActivePlan = function (activePlan) {
      this.activePlans.push(activePlan);
    };

    JoinObserverPrototype.subscribe = function () {
      this.subscription.setDisposable(this.source.materialize().subscribe(this));
    };

    JoinObserverPrototype.removeActivePlan = function (activePlan) {
      this.activePlans.splice(this.activePlans.indexOf(activePlan), 1);
      this.activePlans.length === 0 && this.dispose();
    };

    JoinObserverPrototype.dispose = function () {
      __super__.prototype.dispose.call(this);
      if (!this.isDisposed) {
        this.isDisposed = true;
        this.subscription.dispose();
      }
    };

    return JoinObserver;
  } (AbstractObserver));

  /**
   *  Creates a pattern that matches when both observable sequences have an available value.
   *
   *  @param right Observable sequence to match with the current sequence.
   *  @return {Pattern} Pattern object that matches when both observable sequences have an available value.
   */
  observableProto.and = function (right) {
    return new Pattern([this, right]);
  };

  /**
   *  Matches when the observable sequence has an available value and projects the value.
   *
   *  @param {Function} selector Selector that will be invoked for values in the source sequence.
   *  @returns {Plan} Plan that produces the projected values, to be fed (with other plans) to the when operator.
   */
  observableProto.thenDo = function (selector) {
    return new Pattern([this]).thenDo(selector);
  };

  /**
   *  Joins together the results from several patterns.
   *
   *  @param plans A series of plans (specified as an Array of as a series of arguments) created by use of the Then operator on patterns.
   *  @returns {Observable} Observable sequence with the results form matching several patterns.
   */
  Observable.when = function () {
    var len = arguments.length, plans;
    if (Array.isArray(arguments[0])) {
      plans = arguments[0];
    } else {
      plans = new Array(len);
      for(var i = 0; i < len; i++) { plans[i] = arguments[i]; }
    }
    return new AnonymousObservable(function (o) {
      var activePlans = [],
          externalSubscriptions = new Map();
      var outObserver = observerCreate(
        function (x) { o.onNext(x); },
        function (err) {
          externalSubscriptions.forEach(function (v) { v.onError(err); });
          o.onError(err);
        },
        function (x) { o.onCompleted(); }
      );
      try {
        for (var i = 0, len = plans.length; i < len; i++) {
          activePlans.push(plans[i].activate(externalSubscriptions, outObserver, function (activePlan) {
            var idx = activePlans.indexOf(activePlan);
            activePlans.splice(idx, 1);
            activePlans.length === 0 && o.onCompleted();
          }));
        }
      } catch (e) {
        return observableThrow(e).subscribe(o);
      }
      var group = new CompositeDisposable();
      externalSubscriptions.forEach(function (joinObserver) {
        joinObserver.subscribe();
        group.add(joinObserver);
      });

      return group;
    });
  };

  var TimerObservable = (function(__super__) {
    inherits(TimerObservable, __super__);
    function TimerObservable(dt, s) {
      this._dt = dt;
      this._s = s;
      __super__.call(this);
    }

    TimerObservable.prototype.subscribeCore = function (o) {
      return this._s.scheduleFuture(o, this._dt, scheduleMethod);
    };

    function scheduleMethod(s, o) {
      o.onNext(0);
      o.onCompleted();
    }

    return TimerObservable;
  }(ObservableBase));

  function _observableTimer(dueTime, scheduler) {
    return new TimerObservable(dueTime, scheduler);
  }

  function observableTimerDateAndPeriod(dueTime, period, scheduler) {
    return new AnonymousObservable(function (observer) {
      var d = dueTime, p = normalizeTime(period);
      return scheduler.scheduleRecursiveFuture(0, d, function (count, self) {
        if (p > 0) {
          var now = scheduler.now();
          d = new Date(d.getTime() + p);
          d.getTime() <= now && (d = new Date(now + p));
        }
        observer.onNext(count);
        self(count + 1, new Date(d));
      });
    });
  }

  function observableTimerTimeSpanAndPeriod(dueTime, period, scheduler) {
    return dueTime === period ?
      new AnonymousObservable(function (observer) {
        return scheduler.schedulePeriodic(0, period, function (count) {
          observer.onNext(count);
          return count + 1;
        });
      }) :
      observableDefer(function () {
        return observableTimerDateAndPeriod(new Date(scheduler.now() + dueTime), period, scheduler);
      });
  }

  /**
   *  Returns an observable sequence that produces a value after each period.
   *
   * @example
   *  1 - res = Rx.Observable.interval(1000);
   *  2 - res = Rx.Observable.interval(1000, Rx.Scheduler.timeout);
   *
   * @param {Number} period Period for producing the values in the resulting sequence (specified as an integer denoting milliseconds).
   * @param {Scheduler} [scheduler] Scheduler to run the timer on. If not specified, Rx.Scheduler.timeout is used.
   * @returns {Observable} An observable sequence that produces a value after each period.
   */
  var observableinterval = Observable.interval = function (period, scheduler) {
    return observableTimerTimeSpanAndPeriod(period, period, isScheduler(scheduler) ? scheduler : defaultScheduler);
  };

  /**
   *  Returns an observable sequence that produces a value after dueTime has elapsed and then after each period.
   * @param {Number} dueTime Absolute (specified as a Date object) or relative time (specified as an integer denoting milliseconds) at which to produce the first value.
   * @param {Mixed} [periodOrScheduler]  Period to produce subsequent values (specified as an integer denoting milliseconds), or the scheduler to run the timer on. If not specified, the resulting timer is not recurring.
   * @param {Scheduler} [scheduler]  Scheduler to run the timer on. If not specified, the timeout scheduler is used.
   * @returns {Observable} An observable sequence that produces a value after due time has elapsed and then each period.
   */
  var observableTimer = Observable.timer = function (dueTime, periodOrScheduler, scheduler) {
    var period;
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    if (periodOrScheduler != null && typeof periodOrScheduler === 'number') {
      period = periodOrScheduler;
    } else if (isScheduler(periodOrScheduler)) {
      scheduler = periodOrScheduler;
    }
    if ((dueTime instanceof Date || typeof dueTime === 'number') && period === undefined) {
      return _observableTimer(dueTime, scheduler);
    }
    if (dueTime instanceof Date && period !== undefined) {
      return observableTimerDateAndPeriod(dueTime, periodOrScheduler, scheduler);
    }
    return observableTimerTimeSpanAndPeriod(dueTime, period, scheduler);
  };

  function observableDelayRelative(source, dueTime, scheduler) {
    return new AnonymousObservable(function (o) {
      var active = false,
        cancelable = new SerialDisposable(),
        exception = null,
        q = [],
        running = false,
        subscription;
      subscription = source.materialize().timestamp(scheduler).subscribe(function (notification) {
        var d, shouldRun;
        if (notification.value.kind === 'E') {
          q = [];
          q.push(notification);
          exception = notification.value.error;
          shouldRun = !running;
        } else {
          q.push({ value: notification.value, timestamp: notification.timestamp + dueTime });
          shouldRun = !active;
          active = true;
        }
        if (shouldRun) {
          if (exception !== null) {
            o.onError(exception);
          } else {
            d = new SingleAssignmentDisposable();
            cancelable.setDisposable(d);
            d.setDisposable(scheduler.scheduleRecursiveFuture(null, dueTime, function (_, self) {
              var e, recurseDueTime, result, shouldRecurse;
              if (exception !== null) {
                return;
              }
              running = true;
              do {
                result = null;
                if (q.length > 0 && q[0].timestamp - scheduler.now() <= 0) {
                  result = q.shift().value;
                }
                if (result !== null) {
                  result.accept(o);
                }
              } while (result !== null);
              shouldRecurse = false;
              recurseDueTime = 0;
              if (q.length > 0) {
                shouldRecurse = true;
                recurseDueTime = Math.max(0, q[0].timestamp - scheduler.now());
              } else {
                active = false;
              }
              e = exception;
              running = false;
              if (e !== null) {
                o.onError(e);
              } else if (shouldRecurse) {
                self(null, recurseDueTime);
              }
            }));
          }
        }
      });
      return new BinaryDisposable(subscription, cancelable);
    }, source);
  }

  function observableDelayAbsolute(source, dueTime, scheduler) {
    return observableDefer(function () {
      return observableDelayRelative(source, dueTime - scheduler.now(), scheduler);
    });
  }

  function delayWithSelector(source, subscriptionDelay, delayDurationSelector) {
    var subDelay, selector;
    if (isFunction(subscriptionDelay)) {
      selector = subscriptionDelay;
    } else {
      subDelay = subscriptionDelay;
      selector = delayDurationSelector;
    }
    return new AnonymousObservable(function (o) {
      var delays = new CompositeDisposable(), atEnd = false, subscription = new SerialDisposable();

      function start() {
        subscription.setDisposable(source.subscribe(
          function (x) {
            var delay = tryCatch(selector)(x);
            if (delay === errorObj) { return o.onError(delay.e); }
            var d = new SingleAssignmentDisposable();
            delays.add(d);
            d.setDisposable(delay.subscribe(
              function () {
                o.onNext(x);
                delays.remove(d);
                done();
              },
              function (e) { o.onError(e); },
              function () {
                o.onNext(x);
                delays.remove(d);
                done();
              }
            ));
          },
          function (e) { o.onError(e); },
          function () {
            atEnd = true;
            subscription.dispose();
            done();
          }
        ));
      }

      function done () {
        atEnd && delays.length === 0 && o.onCompleted();
      }

      if (!subDelay) {
        start();
      } else {
        subscription.setDisposable(subDelay.subscribe(start, function (e) { o.onError(e); }, start));
      }

      return new BinaryDisposable(subscription, delays);
    }, source);
  }

  /**
   *  Time shifts the observable sequence by dueTime.
   *  The relative time intervals between the values are preserved.
   *
   * @param {Number} dueTime Absolute (specified as a Date object) or relative time (specified as an integer denoting milliseconds) by which to shift the observable sequence.
   * @param {Scheduler} [scheduler] Scheduler to run the delay timers on. If not specified, the timeout scheduler is used.
   * @returns {Observable} Time-shifted sequence.
   */
  observableProto.delay = function () {
    var firstArg = arguments[0];
    if (typeof firstArg === 'number' || firstArg instanceof Date) {
      var dueTime = firstArg, scheduler = arguments[1];
      isScheduler(scheduler) || (scheduler = defaultScheduler);
      return dueTime instanceof Date ?
        observableDelayAbsolute(this, dueTime, scheduler) :
        observableDelayRelative(this, dueTime, scheduler);
    } else if (Observable.isObservable(firstArg) || isFunction(firstArg)) {
      return delayWithSelector(this, firstArg, arguments[1]);
    } else {
      throw new Error('Invalid arguments');
    }
  };

  var DebounceObservable = (function (__super__) {
    inherits(DebounceObservable, __super__);
    function DebounceObservable(source, dt, s) {
      isScheduler(s) || (s = defaultScheduler);
      this.source = source;
      this._dt = dt;
      this._s = s;
      __super__.call(this);
    }

    DebounceObservable.prototype.subscribeCore = function (o) {
      var cancelable = new SerialDisposable();
      return new BinaryDisposable(
        this.source.subscribe(new DebounceObserver(o, this._dt, this._s, cancelable)),
        cancelable);
    };

    return DebounceObservable;
  }(ObservableBase));

  var DebounceObserver = (function (__super__) {
    inherits(DebounceObserver, __super__);
    function DebounceObserver(observer, dueTime, scheduler, cancelable) {
      this._o = observer;
      this._d = dueTime;
      this._scheduler = scheduler;
      this._c = cancelable;
      this._v = null;
      this._hv = false;
      this._id = 0;
      __super__.call(this);
    }

    function scheduleFuture(s, state) {
      state.self._hv && state.self._id === state.currentId && state.self._o.onNext(state.x);
      state.self._hv = false;
    }

    DebounceObserver.prototype.next = function (x) {
      this._hv = true;
      this._v = x;
      var currentId = ++this._id, d = new SingleAssignmentDisposable();
      this._c.setDisposable(d);
      d.setDisposable(this._scheduler.scheduleFuture(this, this._d, function (_, self) {
        self._hv && self._id === currentId && self._o.onNext(x);
        self._hv = false;
      }));
    };

    DebounceObserver.prototype.error = function (e) {
      this._c.dispose();
      this._o.onError(e);
      this._hv = false;
      this._id++;
    };

    DebounceObserver.prototype.completed = function () {
      this._c.dispose();
      this._hv && this._o.onNext(this._v);
      this._o.onCompleted();
      this._hv = false;
      this._id++;
    };

    return DebounceObserver;
  }(AbstractObserver));

  function debounceWithSelector(source, durationSelector) {
    return new AnonymousObservable(function (o) {
      var value, hasValue = false, cancelable = new SerialDisposable(), id = 0;
      var subscription = source.subscribe(
        function (x) {
          var throttle = tryCatch(durationSelector)(x);
          if (throttle === errorObj) { return o.onError(throttle.e); }

          isPromise(throttle) && (throttle = observableFromPromise(throttle));

          hasValue = true;
          value = x;
          id++;
          var currentid = id, d = new SingleAssignmentDisposable();
          cancelable.setDisposable(d);
          d.setDisposable(throttle.subscribe(
            function () {
              hasValue && id === currentid && o.onNext(value);
              hasValue = false;
              d.dispose();
            },
            function (e) { o.onError(e); },
            function () {
              hasValue && id === currentid && o.onNext(value);
              hasValue = false;
              d.dispose();
            }
          ));
        },
        function (e) {
          cancelable.dispose();
          o.onError(e);
          hasValue = false;
          id++;
        },
        function () {
          cancelable.dispose();
          hasValue && o.onNext(value);
          o.onCompleted();
          hasValue = false;
          id++;
        }
      );
      return new BinaryDisposable(subscription, cancelable);
    }, source);
  }

  observableProto.debounce = function () {
    if (isFunction (arguments[0])) {
      return debounceWithSelector(this, arguments[0]);
    } else if (typeof arguments[0] === 'number') {
      return new DebounceObservable(this, arguments[0], arguments[1]);
    } else {
      throw new Error('Invalid arguments');
    }
  };

  /**
   *  Projects each element of an observable sequence into zero or more windows which are produced based on timing information.
   * @param {Number} timeSpan Length of each window (specified as an integer denoting milliseconds).
   * @param {Mixed} [timeShiftOrScheduler]  Interval between creation of consecutive windows (specified as an integer denoting milliseconds), or an optional scheduler parameter. If not specified, the time shift corresponds to the timeSpan parameter, resulting in non-overlapping adjacent windows.
   * @param {Scheduler} [scheduler]  Scheduler to run windowing timers on. If not specified, the timeout scheduler is used.
   * @returns {Observable} An observable sequence of windows.
   */
  observableProto.windowWithTime = observableProto.windowTime = function (timeSpan, timeShiftOrScheduler, scheduler) {
    var source = this, timeShift;
    timeShiftOrScheduler == null && (timeShift = timeSpan);
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    if (typeof timeShiftOrScheduler === 'number') {
      timeShift = timeShiftOrScheduler;
    } else if (isScheduler(timeShiftOrScheduler)) {
      timeShift = timeSpan;
      scheduler = timeShiftOrScheduler;
    }
    return new AnonymousObservable(function (observer) {
      var groupDisposable,
        nextShift = timeShift,
        nextSpan = timeSpan,
        q = [],
        refCountDisposable,
        timerD = new SerialDisposable(),
        totalTime = 0;
        groupDisposable = new CompositeDisposable(timerD),
        refCountDisposable = new RefCountDisposable(groupDisposable);

       function createTimer () {
        var m = new SingleAssignmentDisposable(),
          isSpan = false,
          isShift = false;
        timerD.setDisposable(m);
        if (nextSpan === nextShift) {
          isSpan = true;
          isShift = true;
        } else if (nextSpan < nextShift) {
            isSpan = true;
        } else {
          isShift = true;
        }
        var newTotalTime = isSpan ? nextSpan : nextShift,
          ts = newTotalTime - totalTime;
        totalTime = newTotalTime;
        if (isSpan) {
          nextSpan += timeShift;
        }
        if (isShift) {
          nextShift += timeShift;
        }
        m.setDisposable(scheduler.scheduleFuture(null, ts, function () {
          if (isShift) {
            var s = new Subject();
            q.push(s);
            observer.onNext(addRef(s, refCountDisposable));
          }
          isSpan && q.shift().onCompleted();
          createTimer();
        }));
      };
      q.push(new Subject());
      observer.onNext(addRef(q[0], refCountDisposable));
      createTimer();
      groupDisposable.add(source.subscribe(
        function (x) {
          for (var i = 0, len = q.length; i < len; i++) { q[i].onNext(x); }
        },
        function (e) {
          for (var i = 0, len = q.length; i < len; i++) { q[i].onError(e); }
          observer.onError(e);
        },
        function () {
          for (var i = 0, len = q.length; i < len; i++) { q[i].onCompleted(); }
          observer.onCompleted();
        }
      ));
      return refCountDisposable;
    }, source);
  };

  /**
   *  Projects each element of an observable sequence into a window that is completed when either it's full or a given amount of time has elapsed.
   * @param {Number} timeSpan Maximum time length of a window.
   * @param {Number} count Maximum element count of a window.
   * @param {Scheduler} [scheduler]  Scheduler to run windowing timers on. If not specified, the timeout scheduler is used.
   * @returns {Observable} An observable sequence of windows.
   */
  observableProto.windowWithTimeOrCount = observableProto.windowTimeOrCount = function (timeSpan, count, scheduler) {
    var source = this;
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    return new AnonymousObservable(function (observer) {
      var timerD = new SerialDisposable(),
          groupDisposable = new CompositeDisposable(timerD),
          refCountDisposable = new RefCountDisposable(groupDisposable),
          n = 0,
          windowId = 0,
          s = new Subject();

      function createTimer(id) {
        var m = new SingleAssignmentDisposable();
        timerD.setDisposable(m);
        m.setDisposable(scheduler.scheduleFuture(null, timeSpan, function () {
          if (id !== windowId) { return; }
          n = 0;
          var newId = ++windowId;
          s.onCompleted();
          s = new Subject();
          observer.onNext(addRef(s, refCountDisposable));
          createTimer(newId);
        }));
      }

      observer.onNext(addRef(s, refCountDisposable));
      createTimer(0);

      groupDisposable.add(source.subscribe(
        function (x) {
          var newId = 0, newWindow = false;
          s.onNext(x);
          if (++n === count) {
            newWindow = true;
            n = 0;
            newId = ++windowId;
            s.onCompleted();
            s = new Subject();
            observer.onNext(addRef(s, refCountDisposable));
          }
          newWindow && createTimer(newId);
        },
        function (e) {
          s.onError(e);
          observer.onError(e);
        }, function () {
          s.onCompleted();
          observer.onCompleted();
        }
      ));
      return refCountDisposable;
    }, source);
  };

  function toArray(x) { return x.toArray(); }

  /**
   *  Projects each element of an observable sequence into zero or more buffers which are produced based on timing information.
   * @param {Number} timeSpan Length of each buffer (specified as an integer denoting milliseconds).
   * @param {Mixed} [timeShiftOrScheduler]  Interval between creation of consecutive buffers (specified as an integer denoting milliseconds), or an optional scheduler parameter. If not specified, the time shift corresponds to the timeSpan parameter, resulting in non-overlapping adjacent buffers.
   * @param {Scheduler} [scheduler]  Scheduler to run buffer timers on. If not specified, the timeout scheduler is used.
   * @returns {Observable} An observable sequence of buffers.
   */
  observableProto.bufferWithTime = observableProto.bufferTime = function (timeSpan, timeShiftOrScheduler, scheduler) {
    return this.windowWithTime(timeSpan, timeShiftOrScheduler, scheduler).flatMap(toArray);
  };

  function toArray(x) { return x.toArray(); }

  /**
   *  Projects each element of an observable sequence into a buffer that is completed when either it's full or a given amount of time has elapsed.
   * @param {Number} timeSpan Maximum time length of a buffer.
   * @param {Number} count Maximum element count of a buffer.
   * @param {Scheduler} [scheduler]  Scheduler to run bufferin timers on. If not specified, the timeout scheduler is used.
   * @returns {Observable} An observable sequence of buffers.
   */
  observableProto.bufferWithTimeOrCount = observableProto.bufferTimeOrCount = function (timeSpan, count, scheduler) {
    return this.windowWithTimeOrCount(timeSpan, count, scheduler).flatMap(toArray);
  };

  var TimeIntervalObservable = (function (__super__) {
    inherits(TimeIntervalObservable, __super__);
    function TimeIntervalObservable(source, s) {
      this.source = source;
      this._s = s;
      __super__.call(this);
    }

    TimeIntervalObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new TimeIntervalObserver(o, this._s));
    };

    return TimeIntervalObservable;
  }(ObservableBase));

  var TimeIntervalObserver = (function (__super__) {
    inherits(TimeIntervalObserver, __super__);

    function TimeIntervalObserver(o, s) {
      this._o = o;
      this._s = s;
      this._l = s.now();
      __super__.call(this);
    }

    TimeIntervalObserver.prototype.next = function (x) {
      var now = this._s.now(), span = now - this._l;
      this._l = now;
      this._o.onNext({ value: x, interval: span });
    };
    TimeIntervalObserver.prototype.error = function (e) { this._o.onError(e); };
    TimeIntervalObserver.prototype.completed = function () { this._o.onCompleted(); };

    return TimeIntervalObserver;
  }(AbstractObserver));

  /**
   *  Records the time interval between consecutive values in an observable sequence.
   *
   * @example
   *  1 - res = source.timeInterval();
   *  2 - res = source.timeInterval(Rx.Scheduler.timeout);
   *
   * @param [scheduler]  Scheduler used to compute time intervals. If not specified, the timeout scheduler is used.
   * @returns {Observable} An observable sequence with time interval information on values.
   */
  observableProto.timeInterval = function (scheduler) {
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    return new TimeIntervalObservable(this, scheduler);
  };

  var TimestampObservable = (function (__super__) {
    inherits(TimestampObservable, __super__);
    function TimestampObservable(source, s) {
      this.source = source;
      this._s = s;
      __super__.call(this);
    }

    TimestampObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new TimestampObserver(o, this._s));
    };

    return TimestampObservable;
  }(ObservableBase));

  var TimestampObserver = (function (__super__) {
    inherits(TimestampObserver, __super__);
    function TimestampObserver(o, s) {
      this._o = o;
      this._s = s;
      __super__.call(this);
    }

    TimestampObserver.prototype.next = function (x) {
      this._o.onNext({ value: x, timestamp: this._s.now() });
    };

    TimestampObserver.prototype.error = function (e) {
      this._o.onError(e);
    };

    TimestampObserver.prototype.completed = function () {
      this._o.onCompleted();
    };

    return TimestampObserver;
  }(AbstractObserver));

  /**
   *  Records the timestamp for each value in an observable sequence.
   *
   * @example
   *  1 - res = source.timestamp(); // produces { value: x, timestamp: ts }
   *  2 - res = source.timestamp(Rx.Scheduler.default);
   *
   * @param {Scheduler} [scheduler]  Scheduler used to compute timestamps. If not specified, the default scheduler is used.
   * @returns {Observable} An observable sequence with timestamp information on values.
   */
  observableProto.timestamp = function (scheduler) {
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    return new TimestampObservable(this, scheduler);
  };

  var SampleObservable = (function(__super__) {
    inherits(SampleObservable, __super__);
    function SampleObservable(source, sampler) {
      this.source = source;
      this._sampler = sampler;
      __super__.call(this);
    }

    SampleObservable.prototype.subscribeCore = function (o) {
      var state = {
        o: o,
        atEnd: false,
        value: null,
        hasValue: false,
        sourceSubscription: new SingleAssignmentDisposable()
      };

      state.sourceSubscription.setDisposable(this.source.subscribe(new SampleSourceObserver(state)));
      return new BinaryDisposable(
        state.sourceSubscription,
        this._sampler.subscribe(new SamplerObserver(state))
      );
    };

    return SampleObservable;
  }(ObservableBase));

  var SamplerObserver = (function(__super__) {
    inherits(SamplerObserver, __super__);
    function SamplerObserver(s) {
      this._s = s;
      __super__.call(this);
    }

    SamplerObserver.prototype._handleMessage = function () {
      if (this._s.hasValue) {
        this._s.hasValue = false;
        this._s.o.onNext(this._s.value);
      }
      this._s.atEnd && this._s.o.onCompleted();
    };

    SamplerObserver.prototype.next = function () { this._handleMessage(); };
    SamplerObserver.prototype.error = function (e) { this._s.onError(e); };
    SamplerObserver.prototype.completed = function () { this._handleMessage(); };

    return SamplerObserver;
  }(AbstractObserver));

  var SampleSourceObserver = (function(__super__) {
    inherits(SampleSourceObserver, __super__);
    function SampleSourceObserver(s) {
      this._s = s;
      __super__.call(this);
    }

    SampleSourceObserver.prototype.next = function (x) {
      this._s.hasValue = true;
      this._s.value = x;
    };
    SampleSourceObserver.prototype.error = function (e) { this._s.o.onError(e); };
    SampleSourceObserver.prototype.completed = function () {
      this._s.atEnd = true;
      this._s.sourceSubscription.dispose();
    };

    return SampleSourceObserver;
  }(AbstractObserver));

  /**
   *  Samples the observable sequence at each interval.
   *
   * @example
   *  1 - res = source.sample(sampleObservable); // Sampler tick sequence
   *  2 - res = source.sample(5000); // 5 seconds
   *  2 - res = source.sample(5000, Rx.Scheduler.timeout); // 5 seconds
   *
   * @param {Mixed} intervalOrSampler Interval at which to sample (specified as an integer denoting milliseconds) or Sampler Observable.
   * @param {Scheduler} [scheduler]  Scheduler to run the sampling timer on. If not specified, the timeout scheduler is used.
   * @returns {Observable} Sampled observable sequence.
   */
  observableProto.sample = function (intervalOrSampler, scheduler) {
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    return typeof intervalOrSampler === 'number' ?
      new SampleObservable(this, observableinterval(intervalOrSampler, scheduler)) :
      new SampleObservable(this, intervalOrSampler);
  };

  var TimeoutError = Rx.TimeoutError = function(message) {
    this.message = message || 'Timeout has occurred';
    this.name = 'TimeoutError';
    Error.call(this);
  };
  TimeoutError.prototype = Object.create(Error.prototype);

  function timeoutWithSelector(source, firstTimeout, timeoutDurationSelector, other) {
    if (isFunction(firstTimeout)) {
      other = timeoutDurationSelector;
      timeoutDurationSelector = firstTimeout;
      firstTimeout = observableNever();
    }
    Observable.isObservable(other) || (other = observableThrow(new TimeoutError()));
    return new AnonymousObservable(function (o) {
      var subscription = new SerialDisposable(),
        timer = new SerialDisposable(),
        original = new SingleAssignmentDisposable();

      subscription.setDisposable(original);

      var id = 0, switched = false;

      function setTimer(timeout) {
        var myId = id, d = new SingleAssignmentDisposable();

        function timerWins() {
          switched = (myId === id);
          return switched;
        }

        timer.setDisposable(d);
        d.setDisposable(timeout.subscribe(function () {
          timerWins() && subscription.setDisposable(other.subscribe(o));
          d.dispose();
        }, function (e) {
          timerWins() && o.onError(e);
        }, function () {
          timerWins() && subscription.setDisposable(other.subscribe(o));
        }));
      };

      setTimer(firstTimeout);

      function oWins() {
        var res = !switched;
        if (res) { id++; }
        return res;
      }

      original.setDisposable(source.subscribe(function (x) {
        if (oWins()) {
          o.onNext(x);
          var timeout = tryCatch(timeoutDurationSelector)(x);
          if (timeout === errorObj) { return o.onError(timeout.e); }
          setTimer(isPromise(timeout) ? observableFromPromise(timeout) : timeout);
        }
      }, function (e) {
        oWins() && o.onError(e);
      }, function () {
        oWins() && o.onCompleted();
      }));
      return new BinaryDisposable(subscription, timer);
    }, source);
  }

  function timeout(source, dueTime, other, scheduler) {
    if (isScheduler(other)) {
      scheduler = other;
      other = observableThrow(new TimeoutError());
    }
    if (other instanceof Error) { other = observableThrow(other); }
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    Observable.isObservable(other) || (other = observableThrow(new TimeoutError()));
    return new AnonymousObservable(function (o) {
      var id = 0,
        original = new SingleAssignmentDisposable(),
        subscription = new SerialDisposable(),
        switched = false,
        timer = new SerialDisposable();

      subscription.setDisposable(original);

      function createTimer() {
        var myId = id;
        timer.setDisposable(scheduler.scheduleFuture(null, dueTime, function () {
          switched = id === myId;
          if (switched) {
            isPromise(other) && (other = observableFromPromise(other));
            subscription.setDisposable(other.subscribe(o));
          }
        }));
      }

      createTimer();

      original.setDisposable(source.subscribe(function (x) {
        if (!switched) {
          id++;
          o.onNext(x);
          createTimer();
        }
      }, function (e) {
        if (!switched) {
          id++;
          o.onError(e);
        }
      }, function () {
        if (!switched) {
          id++;
          o.onCompleted();
        }
      }));
      return new BinaryDisposable(subscription, timer);
    }, source);
  }

  observableProto.timeout = function () {
    var firstArg = arguments[0];
    if (firstArg instanceof Date || typeof firstArg === 'number') {
      return timeout(this, firstArg, arguments[1], arguments[2]);
    } else if (Observable.isObservable(firstArg) || isFunction(firstArg)) {
      return timeoutWithSelector(this, firstArg, arguments[1], arguments[2]);
    } else {
      throw new Error('Invalid arguments');
    }
  };

  var GenerateAbsoluteObservable = (function (__super__) {
    inherits(GenerateAbsoluteObservable, __super__);
    function GenerateAbsoluteObservable(state, cndFn, itrFn, resFn, timeFn, s) {
      this._state = state;
      this._cndFn = cndFn;
      this._itrFn = itrFn;
      this._resFn = resFn;
      this._timeFn = timeFn;
      this._s = s;
      __super__.call(this);
    }

    function scheduleRecursive(state, recurse) {
      state.hasResult && state.o.onNext(state.result);

      if (state.first) {
        state.first = false;
      } else {
        state.newState = tryCatch(state.self._itrFn)(state.newState);
        if (state.newState === errorObj) { return state.o.onError(state.newState.e); }
      }
      state.hasResult = tryCatch(state.self._cndFn)(state.newState);
      if (state.hasResult === errorObj) { return state.o.onError(state.hasResult.e); }
      if (state.hasResult) {
        state.result = tryCatch(state.self._resFn)(state.newState);
        if (state.result === errorObj) { return state.o.onError(state.result.e); }
        var time = tryCatch(state.self._timeFn)(state.newState);
        if (time === errorObj) { return state.o.onError(time.e); }
        recurse(state, time);
      } else {
        state.o.onCompleted();
      }
    }

    GenerateAbsoluteObservable.prototype.subscribeCore = function (o) {
      var state = {
        o: o,
        self: this,
        newState: this._state,
        first: true,
        hasResult: false
      };
      return this._s.scheduleRecursiveFuture(state, new Date(this._s.now()), scheduleRecursive);
    };

    return GenerateAbsoluteObservable;
  }(ObservableBase));

  /**
   *  GenerateAbsolutes an observable sequence by iterating a state from an initial state until the condition fails.
   *
   * @example
   *  res = source.generateWithAbsoluteTime(0,
   *      function (x) { return return true; },
   *      function (x) { return x + 1; },
   *      function (x) { return x; },
   *      function (x) { return new Date(); }
   *  });
   *
   * @param {Mixed} initialState Initial state.
   * @param {Function} condition Condition to terminate generation (upon returning false).
   * @param {Function} iterate Iteration step function.
   * @param {Function} resultSelector Selector function for results produced in the sequence.
   * @param {Function} timeSelector Time selector function to control the speed of values being produced each iteration, returning Date values.
   * @param {Scheduler} [scheduler]  Scheduler on which to run the generator loop. If not specified, the timeout scheduler is used.
   * @returns {Observable} The generated sequence.
   */
  Observable.generateWithAbsoluteTime = function (initialState, condition, iterate, resultSelector, timeSelector, scheduler) {
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    return new GenerateAbsoluteObservable(initialState, condition, iterate, resultSelector, timeSelector, scheduler);
  };

  var GenerateRelativeObservable = (function (__super__) {
    inherits(GenerateRelativeObservable, __super__);
    function GenerateRelativeObservable(state, cndFn, itrFn, resFn, timeFn, s) {
      this._state = state;
      this._cndFn = cndFn;
      this._itrFn = itrFn;
      this._resFn = resFn;
      this._timeFn = timeFn;
      this._s = s;
      __super__.call(this);
    }

    function scheduleRecursive(state, recurse) {
      state.hasResult && state.o.onNext(state.result);

      if (state.first) {
        state.first = false;
      } else {
        state.newState = tryCatch(state.self._itrFn)(state.newState);
        if (state.newState === errorObj) { return state.o.onError(state.newState.e); }
      }

      state.hasResult = tryCatch(state.self._cndFn)(state.newState);
      if (state.hasResult === errorObj) { return state.o.onError(state.hasResult.e); }
      if (state.hasResult) {
        state.result = tryCatch(state.self._resFn)(state.newState);
        if (state.result === errorObj) { return state.o.onError(state.result.e); }
        var time = tryCatch(state.self._timeFn)(state.newState);
        if (time === errorObj) { return state.o.onError(time.e); }
        recurse(state, time);
      } else {
        state.o.onCompleted();
      }
    }

    GenerateRelativeObservable.prototype.subscribeCore = function (o) {
      var state = {
        o: o,
        self: this,
        newState: this._state,
        first: true,
        hasResult: false
      };
      return this._s.scheduleRecursiveFuture(state, 0, scheduleRecursive);
    };

    return GenerateRelativeObservable;
  }(ObservableBase));

  /**
   *  Generates an observable sequence by iterating a state from an initial state until the condition fails.
   *
   * @example
   *  res = source.generateWithRelativeTime(0,
   *      function (x) { return return true; },
   *      function (x) { return x + 1; },
   *      function (x) { return x; },
   *      function (x) { return 500; }
   *  );
   *
   * @param {Mixed} initialState Initial state.
   * @param {Function} condition Condition to terminate generation (upon returning false).
   * @param {Function} iterate Iteration step function.
   * @param {Function} resultSelector Selector function for results produced in the sequence.
   * @param {Function} timeSelector Time selector function to control the speed of values being produced each iteration, returning integer values denoting milliseconds.
   * @param {Scheduler} [scheduler]  Scheduler on which to run the generator loop. If not specified, the timeout scheduler is used.
   * @returns {Observable} The generated sequence.
   */
  Observable.generateWithRelativeTime = function (initialState, condition, iterate, resultSelector, timeSelector, scheduler) {
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    return new GenerateRelativeObservable(initialState, condition, iterate, resultSelector, timeSelector, scheduler);
  };

  var DelaySubscription = (function(__super__) {
    inherits(DelaySubscription, __super__);
    function DelaySubscription(source, dt, s) {
      this.source = source;
      this._dt = dt;
      this._s = s;
      __super__.call(this);
    }

    DelaySubscription.prototype.subscribeCore = function (o) {
      var d = new SerialDisposable();

      d.setDisposable(this._s.scheduleFuture([this.source, o, d], this._dt, scheduleMethod));

      return d;
    };

    function scheduleMethod(s, state) {
      var source = state[0], o = state[1], d = state[2];
      d.setDisposable(source.subscribe(o));
    }

    return DelaySubscription;
  }(ObservableBase));

  /**
   *  Time shifts the observable sequence by delaying the subscription with the specified relative time duration, using the specified scheduler to run timers.
   *
   * @example
   *  1 - res = source.delaySubscription(5000); // 5s
   *  2 - res = source.delaySubscription(5000, Rx.Scheduler.default); // 5 seconds
   *
   * @param {Number} dueTime Relative or absolute time shift of the subscription.
   * @param {Scheduler} [scheduler]  Scheduler to run the subscription delay timer on. If not specified, the timeout scheduler is used.
   * @returns {Observable} Time-shifted sequence.
   */
  observableProto.delaySubscription = function (dueTime, scheduler) {
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    return new DelaySubscription(this, dueTime, scheduler);
  };

  var SkipLastWithTimeObservable = (function (__super__) {
    inherits(SkipLastWithTimeObservable, __super__);
    function SkipLastWithTimeObservable(source, d, s) {
      this.source = source;
      this._d = d;
      this._s = s;
      __super__.call(this);
    }

    SkipLastWithTimeObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new SkipLastWithTimeObserver(o, this));
    };

    return SkipLastWithTimeObservable;
  }(ObservableBase));

  var SkipLastWithTimeObserver = (function (__super__) {
    inherits(SkipLastWithTimeObserver, __super__);

    function SkipLastWithTimeObserver(o, p) {
      this._o = o;
      this._s = p._s;
      this._d = p._d;
      this._q = [];
      __super__.call(this);
    }

    SkipLastWithTimeObserver.prototype.next = function (x) {
      var now = this._s.now();
      this._q.push({ interval: now, value: x });
      while (this._q.length > 0 && now - this._q[0].interval >= this._d) {
        this._o.onNext(this._q.shift().value);
      }
    };
    SkipLastWithTimeObserver.prototype.error = function (e) { this._o.onError(e); };
    SkipLastWithTimeObserver.prototype.completed = function () {
      var now = this._s.now();
      while (this._q.length > 0 && now - this._q[0].interval >= this._d) {
        this._o.onNext(this._q.shift().value);
      }
      this._o.onCompleted();
    };

    return SkipLastWithTimeObserver;
  }(AbstractObserver));

  /**
   *  Skips elements for the specified duration from the end of the observable source sequence, using the specified scheduler to run timers.
   * @description
   *  This operator accumulates a queue with a length enough to store elements received during the initial duration window.
   *  As more elements are received, elements older than the specified duration are taken from the queue and produced on the
   *  result sequence. This causes elements to be delayed with duration.
   * @param {Number} duration Duration for skipping elements from the end of the sequence.
   * @param {Scheduler} [scheduler]  Scheduler to run the timer on. If not specified, defaults to Rx.Scheduler.timeout
   * @returns {Observable} An observable sequence with the elements skipped during the specified duration from the end of the source sequence.
   */
  observableProto.skipLastWithTime = function (duration, scheduler) {
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    return new SkipLastWithTimeObservable(this, duration, scheduler);
  };

  var TakeLastWithTimeObservable = (function (__super__) {
    inherits(TakeLastWithTimeObservable, __super__);
    function TakeLastWithTimeObservable(source, d, s) {
      this.source = source;
      this._d = d;
      this._s = s;
      __super__.call(this);
    }

    TakeLastWithTimeObservable.prototype.subscribeCore = function (o) {
      return this.source.subscribe(new TakeLastWithTimeObserver(o, this._d, this._s));
    };

    return TakeLastWithTimeObservable;
  }(ObservableBase));

  var TakeLastWithTimeObserver = (function (__super__) {
    inherits(TakeLastWithTimeObserver, __super__);

    function TakeLastWithTimeObserver(o, d, s) {
      this._o = o;
      this._d = d;
      this._s = s;
      this._q = [];
      __super__.call(this);
    }

    TakeLastWithTimeObserver.prototype.next = function (x) {
      var now = this._s.now();
      this._q.push({ interval: now, value: x });
      while (this._q.length > 0 && now - this._q[0].interval >= this._d) {
        this._q.shift();
      }
    };
    TakeLastWithTimeObserver.prototype.error = function (e) { this._o.onError(e); };
    TakeLastWithTimeObserver.prototype.completed = function () {
      var now = this._s.now();
      while (this._q.length > 0) {
        var next = this._q.shift();
        if (now - next.interval <= this._d) { this._o.onNext(next.value); }
      }
      this._o.onCompleted();
    };

    return TakeLastWithTimeObserver;
  }(AbstractObserver));

  /**
   *  Returns elements within the specified duration from the end of the observable source sequence, using the specified schedulers to run timers and to drain the collected elements.
   * @description
   *  This operator accumulates a queue with a length enough to store elements received during the initial duration window.
   *  As more elements are received, elements older than the specified duration are taken from the queue and produced on the
   *  result sequence. This causes elements to be delayed with duration.
   * @param {Number} duration Duration for taking elements from the end of the sequence.
   * @param {Scheduler} [scheduler]  Scheduler to run the timer on. If not specified, defaults to Rx.Scheduler.timeout.
   * @returns {Observable} An observable sequence with the elements taken during the specified duration from the end of the source sequence.
   */
  observableProto.takeLastWithTime = function (duration, scheduler) {
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    return new TakeLastWithTimeObservable(this, duration, scheduler);
  };

  /**
   *  Returns an array with the elements within the specified duration from the end of the observable source sequence, using the specified scheduler to run timers.
   * @description
   *  This operator accumulates a queue with a length enough to store elements received during the initial duration window.
   *  As more elements are received, elements older than the specified duration are taken from the queue and produced on the
   *  result sequence. This causes elements to be delayed with duration.
   * @param {Number} duration Duration for taking elements from the end of the sequence.
   * @param {Scheduler} scheduler Scheduler to run the timer on. If not specified, defaults to Rx.Scheduler.timeout.
   * @returns {Observable} An observable sequence containing a single array with the elements taken during the specified duration from the end of the source sequence.
   */
  observableProto.takeLastBufferWithTime = function (duration, scheduler) {
    var source = this;
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    return new AnonymousObservable(function (o) {
      var q = [];
      return source.subscribe(function (x) {
        var now = scheduler.now();
        q.push({ interval: now, value: x });
        while (q.length > 0 && now - q[0].interval >= duration) {
          q.shift();
        }
      }, function (e) { o.onError(e); }, function () {
        var now = scheduler.now(), res = [];
        while (q.length > 0) {
          var next = q.shift();
          now - next.interval <= duration && res.push(next.value);
        }
        o.onNext(res);
        o.onCompleted();
      });
    }, source);
  };

  var TakeWithTimeObservable = (function (__super__) {
    inherits(TakeWithTimeObservable, __super__);
    function TakeWithTimeObservable(source, d, s) {
      this.source = source;
      this._d = d;
      this._s = s;
      __super__.call(this);
    }

    function scheduleMethod(s, o) {
      o.onCompleted();
    }

    TakeWithTimeObservable.prototype.subscribeCore = function (o) {
      return new BinaryDisposable(
        this._s.scheduleFuture(o, this._d, scheduleMethod),
        this.source.subscribe(o)
      );
    };

    return TakeWithTimeObservable;
  }(ObservableBase));

  /**
   *  Takes elements for the specified duration from the start of the observable source sequence, using the specified scheduler to run timers.
   *
   * @example
   *  1 - res = source.takeWithTime(5000,  [optional scheduler]);
   * @description
   *  This operator accumulates a queue with a length enough to store elements received during the initial duration window.
   *  As more elements are received, elements older than the specified duration are taken from the queue and produced on the
   *  result sequence. This causes elements to be delayed with duration.
   * @param {Number} duration Duration for taking elements from the start of the sequence.
   * @param {Scheduler} scheduler Scheduler to run the timer on. If not specified, defaults to Rx.Scheduler.timeout.
   * @returns {Observable} An observable sequence with the elements taken during the specified duration from the start of the source sequence.
   */
  observableProto.takeWithTime = function (duration, scheduler) {
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    return new TakeWithTimeObservable(this, duration, scheduler);
  };

  var SkipWithTimeObservable = (function (__super__) {
    inherits(SkipWithTimeObservable, __super__);
    function SkipWithTimeObservable(source, d, s) {
      this.source = source;
      this._d = d;
      this._s = s;
      this._open = false;
      __super__.call(this);
    }

    function scheduleMethod(s, self) {
      self._open = true;
    }

    SkipWithTimeObservable.prototype.subscribeCore = function (o) {
      return new BinaryDisposable(
        this._s.scheduleFuture(this, this._d, scheduleMethod),
        this.source.subscribe(new SkipWithTimeObserver(o, this))
      );
    };

    return SkipWithTimeObservable;
  }(ObservableBase));

  var SkipWithTimeObserver = (function (__super__) {
    inherits(SkipWithTimeObserver, __super__);

    function SkipWithTimeObserver(o, p) {
      this._o = o;
      this._p = p;
      __super__.call(this);
    }

    SkipWithTimeObserver.prototype.next = function (x) { this._p._open && this._o.onNext(x); };
    SkipWithTimeObserver.prototype.error = function (e) { this._o.onError(e); };
    SkipWithTimeObserver.prototype.completed = function () { this._o.onCompleted(); };

    return SkipWithTimeObserver;
  }(AbstractObserver));

  /**
   *  Skips elements for the specified duration from the start of the observable source sequence, using the specified scheduler to run timers.
   * @description
   *  Specifying a zero value for duration doesn't guarantee no elements will be dropped from the start of the source sequence.
   *  This is a side-effect of the asynchrony introduced by the scheduler, where the action that causes callbacks from the source sequence to be forwarded
   *  may not execute immediately, despite the zero due time.
   *
   *  Errors produced by the source sequence are always forwarded to the result sequence, even if the error occurs before the duration.
   * @param {Number} duration Duration for skipping elements from the start of the sequence.
   * @param {Scheduler} scheduler Scheduler to run the timer on. If not specified, defaults to Rx.Scheduler.timeout.
   * @returns {Observable} An observable sequence with the elements skipped during the specified duration from the start of the source sequence.
   */
  observableProto.skipWithTime = function (duration, scheduler) {
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    return new SkipWithTimeObservable(this, duration, scheduler);
  };

  var SkipUntilWithTimeObservable = (function (__super__) {
    inherits(SkipUntilWithTimeObservable, __super__);
    function SkipUntilWithTimeObservable(source, startTime, scheduler) {
      this.source = source;
      this._st = startTime;
      this._s = scheduler;
      __super__.call(this);
    }

    function scheduleMethod(s, state) {
      state._open = true;
    }

    SkipUntilWithTimeObservable.prototype.subscribeCore = function (o) {
      this._open = false;
      return new BinaryDisposable(
        this._s.scheduleFuture(this, this._st, scheduleMethod),
        this.source.subscribe(new SkipUntilWithTimeObserver(o, this))
      );
    };

    return SkipUntilWithTimeObservable;
  }(ObservableBase));

  var SkipUntilWithTimeObserver = (function (__super__) {
    inherits(SkipUntilWithTimeObserver, __super__);

    function SkipUntilWithTimeObserver(o, p) {
      this._o = o;
      this._p = p;
      __super__.call(this);
    }

    SkipUntilWithTimeObserver.prototype.next = function (x) { this._p._open && this._o.onNext(x); };
    SkipUntilWithTimeObserver.prototype.error = function (e) { this._o.onError(e); };
    SkipUntilWithTimeObserver.prototype.completed = function () { this._o.onCompleted(); };

    return SkipUntilWithTimeObserver;
  }(AbstractObserver));


  /**
   *  Skips elements from the observable source sequence until the specified start time, using the specified scheduler to run timers.
   *  Errors produced by the source sequence are always forwarded to the result sequence, even if the error occurs before the start time.
   *
   * @examples
   *  1 - res = source.skipUntilWithTime(new Date(), [scheduler]);
   *  2 - res = source.skipUntilWithTime(5000, [scheduler]);
   * @param {Date|Number} startTime Time to start taking elements from the source sequence. If this value is less than or equal to Date(), no elements will be skipped.
   * @param {Scheduler} [scheduler] Scheduler to run the timer on. If not specified, defaults to Rx.Scheduler.timeout.
   * @returns {Observable} An observable sequence with the elements skipped until the specified start time.
   */
  observableProto.skipUntilWithTime = function (startTime, scheduler) {
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    return new SkipUntilWithTimeObservable(this, startTime, scheduler);
  };

  /**
   *  Takes elements for the specified duration until the specified end time, using the specified scheduler to run timers.
   * @param {Number | Date} endTime Time to stop taking elements from the source sequence. If this value is less than or equal to new Date(), the result stream will complete immediately.
   * @param {Scheduler} [scheduler] Scheduler to run the timer on.
   * @returns {Observable} An observable sequence with the elements taken until the specified end time.
   */
  observableProto.takeUntilWithTime = function (endTime, scheduler) {
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    var source = this;
    return new AnonymousObservable(function (o) {
      return new BinaryDisposable(
        scheduler.scheduleFuture(o, endTime, function (_, o) { o.onCompleted(); }),
        source.subscribe(o));
    }, source);
  };

  /**
   * Returns an Observable that emits only the first item emitted by the source Observable during sequential time windows of a specified duration.
   * @param {Number} windowDuration time to wait before emitting another item after emitting the last item
   * @param {Scheduler} [scheduler] the Scheduler to use internally to manage the timers that handle timeout for each item. If not provided, defaults to Scheduler.timeout.
   * @returns {Observable} An Observable that performs the throttle operation.
   */
  observableProto.throttle = function (windowDuration, scheduler) {
    isScheduler(scheduler) || (scheduler = defaultScheduler);
    var duration = +windowDuration || 0;
    if (duration <= 0) { throw new RangeError('windowDuration cannot be less or equal zero.'); }
    var source = this;
    return new AnonymousObservable(function (o) {
      var lastOnNext = 0;
      return source.subscribe(
        function (x) {
          var now = scheduler.now();
          if (lastOnNext === 0 || now - lastOnNext >= duration) {
            lastOnNext = now;
            o.onNext(x);
          }
        },function (e) { o.onError(e); }, function () { o.onCompleted(); }
      );
    }, source);
  };

  var TransduceObserver = (function (__super__) {
    inherits(TransduceObserver, __super__);
    function TransduceObserver(o, xform) {
      this._o = o;
      this._xform = xform;
      __super__.call(this);
    }

    TransduceObserver.prototype.next = function (x) {
      var res = tryCatch(this._xform['@@transducer/step']).call(this._xform, this._o, x);
      if (res === errorObj) { this._o.onError(res.e); }
    };

    TransduceObserver.prototype.error = function (e) { this._o.onError(e); };

    TransduceObserver.prototype.completed = function () {
      this._xform['@@transducer/result'](this._o);
    };

    return TransduceObserver;
  }(AbstractObserver));

  function transformForObserver(o) {
    return {
      '@@transducer/init': function() {
        return o;
      },
      '@@transducer/step': function(obs, input) {
        return obs.onNext(input);
      },
      '@@transducer/result': function(obs) {
        return obs.onCompleted();
      }
    };
  }

  /**
   * Executes a transducer to transform the observable sequence
   * @param {Transducer} transducer A transducer to execute
   * @returns {Observable} An Observable sequence containing the results from the transducer.
   */
  observableProto.transduce = function(transducer) {
    var source = this;
    return new AnonymousObservable(function(o) {
      var xform = transducer(transformForObserver(o));
      return source.subscribe(new TransduceObserver(o, xform));
    }, source);
  };

  var SwitchFirstObservable = (function (__super__) {
    inherits(SwitchFirstObservable, __super__);
    function SwitchFirstObservable(source) {
      this.source = source;
      __super__.call(this);
    }

    SwitchFirstObservable.prototype.subscribeCore = function (o) {
      var m = new SingleAssignmentDisposable(),
        g = new CompositeDisposable(),
        state = {
          hasCurrent: false,
          isStopped: false,
          o: o,
          g: g
        };

      g.add(m);
      m.setDisposable(this.source.subscribe(new SwitchFirstObserver(state)));
      return g;
    };

    return SwitchFirstObservable;
  }(ObservableBase));

  var SwitchFirstObserver = (function(__super__) {
    inherits(SwitchFirstObserver, __super__);
    function SwitchFirstObserver(state) {
      this._s = state;
      __super__.call(this);
    }

    SwitchFirstObserver.prototype.next = function (x) {
      if (!this._s.hasCurrent) {
        this._s.hasCurrent = true;
        isPromise(x) && (x = observableFromPromise(x));
        var inner = new SingleAssignmentDisposable();
        this._s.g.add(inner);
        inner.setDisposable(x.subscribe(new InnerObserver(this._s, inner)));
      }
    };

    SwitchFirstObserver.prototype.error = function (e) {
      this._s.o.onError(e);
    };

    SwitchFirstObserver.prototype.completed = function () {
      this._s.isStopped = true;
      !this._s.hasCurrent && this._s.g.length === 1 && this._s.o.onCompleted();
    };

    inherits(InnerObserver, __super__);
    function InnerObserver(state, inner) {
      this._s = state;
      this._i = inner;
      __super__.call(this);
    }

    InnerObserver.prototype.next = function (x) { this._s.o.onNext(x); };
    InnerObserver.prototype.error = function (e) { this._s.o.onError(e); };
    InnerObserver.prototype.completed = function () {
      this._s.g.remove(this._i);
      this._s.hasCurrent = false;
      this._s.isStopped && this._s.g.length === 1 && this._s.o.onCompleted();
    };

    return SwitchFirstObserver;
  }(AbstractObserver));

  /**
   * Performs a exclusive waiting for the first to finish before subscribing to another observable.
   * Observables that come in between subscriptions will be dropped on the floor.
   * @returns {Observable} A exclusive observable with only the results that happen when subscribed.
   */
  observableProto.switchFirst = function () {
    return new SwitchFirstObservable(this);
  };

observableProto.flatMapFirst = observableProto.exhaustMap = function(selector, resultSelector, thisArg) {
    return new FlatMapObservable(this, selector, resultSelector, thisArg).switchFirst();
};

observableProto.flatMapWithMaxConcurrent = observableProto.flatMapMaxConcurrent = function(limit, selector, resultSelector, thisArg) {
    return new FlatMapObservable(this, selector, resultSelector, thisArg).merge(limit);
};

  /** Provides a set of extension methods for virtual time scheduling. */
  var VirtualTimeScheduler = Rx.VirtualTimeScheduler = (function (__super__) {
    inherits(VirtualTimeScheduler, __super__);

    /**
     * Creates a new virtual time scheduler with the specified initial clock value and absolute time comparer.
     *
     * @constructor
     * @param {Number} initialClock Initial value for the clock.
     * @param {Function} comparer Comparer to determine causality of events based on absolute time.
     */
    function VirtualTimeScheduler(initialClock, comparer) {
      this.clock = initialClock;
      this.comparer = comparer;
      this.isEnabled = false;
      this.queue = new PriorityQueue(1024);
      __super__.call(this);
    }

    var VirtualTimeSchedulerPrototype = VirtualTimeScheduler.prototype;

    VirtualTimeSchedulerPrototype.now = function () {
      return this.toAbsoluteTime(this.clock);
    };

    VirtualTimeSchedulerPrototype.schedule = function (state, action) {
      return this.scheduleAbsolute(state, this.clock, action);
    };

    VirtualTimeSchedulerPrototype.scheduleFuture = function (state, dueTime, action) {
      var dt = dueTime instanceof Date ?
        this.toRelativeTime(dueTime - this.now()) :
        this.toRelativeTime(dueTime);

      return this.scheduleRelative(state, dt, action);
    };

    /**
     * Adds a relative time value to an absolute time value.
     * @param {Number} absolute Absolute virtual time value.
     * @param {Number} relative Relative virtual time value to add.
     * @return {Number} Resulting absolute virtual time sum value.
     */
    VirtualTimeSchedulerPrototype.add = notImplemented;

    /**
     * Converts an absolute time to a number
     * @param {Any} The absolute time.
     * @returns {Number} The absolute time in ms
     */
    VirtualTimeSchedulerPrototype.toAbsoluteTime = notImplemented;

    /**
     * Converts the TimeSpan value to a relative virtual time value.
     * @param {Number} timeSpan TimeSpan value to convert.
     * @return {Number} Corresponding relative virtual time value.
     */
    VirtualTimeSchedulerPrototype.toRelativeTime = notImplemented;

    /**
     * Schedules a periodic piece of work by dynamically discovering the scheduler's capabilities. The periodic task will be emulated using recursive scheduling.
     * @param {Mixed} state Initial state passed to the action upon the first iteration.
     * @param {Number} period Period for running the work periodically.
     * @param {Function} action Action to be executed, potentially updating the state.
     * @returns {Disposable} The disposable object used to cancel the scheduled recurring action (best effort).
     */
    VirtualTimeSchedulerPrototype.schedulePeriodic = function (state, period, action) {
      var s = new SchedulePeriodicRecursive(this, state, period, action);
      return s.start();
    };

    /**
     * Schedules an action to be executed after dueTime.
     * @param {Mixed} state State passed to the action to be executed.
     * @param {Number} dueTime Relative time after which to execute the action.
     * @param {Function} action Action to be executed.
     * @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).
     */
    VirtualTimeSchedulerPrototype.scheduleRelative = function (state, dueTime, action) {
      var runAt = this.add(this.clock, dueTime);
      return this.scheduleAbsolute(state, runAt, action);
    };

    /**
     * Starts the virtual time scheduler.
     */
    VirtualTimeSchedulerPrototype.start = function () {
      if (!this.isEnabled) {
        this.isEnabled = true;
        do {
          var next = this.getNext();
          if (next !== null) {
            this.comparer(next.dueTime, this.clock) > 0 && (this.clock = next.dueTime);
            next.invoke();
          } else {
            this.isEnabled = false;
          }
        } while (this.isEnabled);
      }
    };

    /**
     * Stops the virtual time scheduler.
     */
    VirtualTimeSchedulerPrototype.stop = function () {
      this.isEnabled = false;
    };

    /**
     * Advances the scheduler's clock to the specified time, running all work till that point.
     * @param {Number} time Absolute time to advance the scheduler's clock to.
     */
    VirtualTimeSchedulerPrototype.advanceTo = function (time) {
      var dueToClock = this.comparer(this.clock, time);
      if (this.comparer(this.clock, time) > 0) { throw new ArgumentOutOfRangeError(); }
      if (dueToClock === 0) { return; }
      if (!this.isEnabled) {
        this.isEnabled = true;
        do {
          var next = this.getNext();
          if (next !== null && this.comparer(next.dueTime, time) <= 0) {
            this.comparer(next.dueTime, this.clock) > 0 && (this.clock = next.dueTime);
            next.invoke();
          } else {
            this.isEnabled = false;
          }
        } while (this.isEnabled);
        this.clock = time;
      }
    };

    /**
     * Advances the scheduler's clock by the specified relative time, running all work scheduled for that timespan.
     * @param {Number} time Relative time to advance the scheduler's clock by.
     */
    VirtualTimeSchedulerPrototype.advanceBy = function (time) {
      var dt = this.add(this.clock, time),
          dueToClock = this.comparer(this.clock, dt);
      if (dueToClock > 0) { throw new ArgumentOutOfRangeError(); }
      if (dueToClock === 0) {  return; }

      this.advanceTo(dt);
    };

    /**
     * Advances the scheduler's clock by the specified relative time.
     * @param {Number} time Relative time to advance the scheduler's clock by.
     */
    VirtualTimeSchedulerPrototype.sleep = function (time) {
      var dt = this.add(this.clock, time);
      if (this.comparer(this.clock, dt) >= 0) { throw new ArgumentOutOfRangeError(); }

      this.clock = dt;
    };

    /**
     * Gets the next scheduled item to be executed.
     * @returns {ScheduledItem} The next scheduled item.
     */
    VirtualTimeSchedulerPrototype.getNext = function () {
      while (this.queue.length > 0) {
        var next = this.queue.peek();
        if (next.isCancelled()) {
          this.queue.dequeue();
        } else {
          return next;
        }
      }
      return null;
    };

    /**
     * Schedules an action to be executed at dueTime.
     * @param {Mixed} state State passed to the action to be executed.
     * @param {Number} dueTime Absolute time at which to execute the action.
     * @param {Function} action Action to be executed.
     * @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).
     */
    VirtualTimeSchedulerPrototype.scheduleAbsolute = function (state, dueTime, action) {
      var self = this;

      function run(scheduler, state1) {
        self.queue.remove(si);
        return action(scheduler, state1);
      }

      var si = new ScheduledItem(this, state, run, dueTime, this.comparer);
      this.queue.enqueue(si);

      return si.disposable;
    };

    return VirtualTimeScheduler;
  }(Scheduler));

  /** Provides a virtual time scheduler that uses Date for absolute time and number for relative time. */
  Rx.HistoricalScheduler = (function (__super__) {
    inherits(HistoricalScheduler, __super__);

    /**
     * Creates a new historical scheduler with the specified initial clock value.
     * @constructor
     * @param {Number} initialClock Initial value for the clock.
     * @param {Function} comparer Comparer to determine causality of events based on absolute time.
     */
    function HistoricalScheduler(initialClock, comparer) {
      var clock = initialClock == null ? 0 : initialClock;
      var cmp = comparer || defaultSubComparer;
      __super__.call(this, clock, cmp);
    }

    var HistoricalSchedulerProto = HistoricalScheduler.prototype;

    /**
     * Adds a relative time value to an absolute time value.
     * @param {Number} absolute Absolute virtual time value.
     * @param {Number} relative Relative virtual time value to add.
     * @return {Number} Resulting absolute virtual time sum value.
     */
    HistoricalSchedulerProto.add = function (absolute, relative) {
      return absolute + relative;
    };

    HistoricalSchedulerProto.toAbsoluteTime = function (absolute) {
      return new Date(absolute).getTime();
    };

    /**
     * Converts the TimeSpan value to a relative virtual time value.
     * @memberOf HistoricalScheduler
     * @param {Number} timeSpan TimeSpan value to convert.
     * @return {Number} Corresponding relative virtual time value.
     */
    HistoricalSchedulerProto.toRelativeTime = function (timeSpan) {
      return timeSpan;
    };

    return HistoricalScheduler;
  }(Rx.VirtualTimeScheduler));

function OnNextPredicate(predicate) {
    this.predicate = predicate;
}

OnNextPredicate.prototype.equals = function (other) {
  if (other === this) { return true; }
  if (other == null) { return false; }
  if (other.kind !== 'N') { return false; }
  return this.predicate(other.value);
};

function OnErrorPredicate(predicate) {
  this.predicate = predicate;
}

OnErrorPredicate.prototype.equals = function (other) {
  if (other === this) { return true; }
  if (other == null) { return false; }
  if (other.kind !== 'E') { return false; }
  return this.predicate(other.error);
};

var ReactiveTest = Rx.ReactiveTest = {
  /** Default virtual time used for creation of observable sequences in unit tests. */
  created: 100,
  /** Default virtual time used to subscribe to observable sequences in unit tests. */
  subscribed: 200,
  /** Default virtual time used to dispose subscriptions in unit tests. */
  disposed: 1000,

  /**
   * Factory method for an OnNext notification record at a given time with a given value or a predicate function.
   *
   * 1 - ReactiveTest.onNext(200, 42);
   * 2 - ReactiveTest.onNext(200, function (x) { return x.length == 2; });
   *
   * @param ticks Recorded virtual time the OnNext notification occurs.
   * @param value Recorded value stored in the OnNext notification or a predicate.
   * @return Recorded OnNext notification.
   */
  onNext: function (ticks, value) {
    return typeof value === 'function' ?
      new Recorded(ticks, new OnNextPredicate(value)) :
      new Recorded(ticks, Notification.createOnNext(value));
  },
  /**
   * Factory method for an OnError notification record at a given time with a given error.
   *
   * 1 - ReactiveTest.onNext(200, new Error('error'));
   * 2 - ReactiveTest.onNext(200, function (e) { return e.message === 'error'; });
   *
   * @param ticks Recorded virtual time the OnError notification occurs.
   * @param exception Recorded exception stored in the OnError notification.
   * @return Recorded OnError notification.
   */
  onError: function (ticks, error) {
    return typeof error === 'function' ?
      new Recorded(ticks, new OnErrorPredicate(error)) :
      new Recorded(ticks, Notification.createOnError(error));
  },
  /**
   * Factory method for an OnCompleted notification record at a given time.
   *
   * @param ticks Recorded virtual time the OnCompleted notification occurs.
   * @return Recorded OnCompleted notification.
   */
  onCompleted: function (ticks) {
    return new Recorded(ticks, Notification.createOnCompleted());
  },
  /**
   * Factory method for a subscription record based on a given subscription and disposal time.
   *
   * @param start Virtual time indicating when the subscription was created.
   * @param end Virtual time indicating when the subscription was disposed.
   * @return Subscription object.
   */
  subscribe: function (start, end) {
    return new Subscription(start, end);
  }
};

  /**
   * Creates a new object recording the production of the specified value at the given virtual time.
   *
   * @constructor
   * @param {Number} time Virtual time the value was produced on.
   * @param {Mixed} value Value that was produced.
   * @param {Function} comparer An optional comparer.
   */
  var Recorded = Rx.Recorded = function (time, value, comparer) {
    this.time = time;
    this.value = value;
    this.comparer = comparer || defaultComparer;
  };

  /**
   * Checks whether the given recorded object is equal to the current instance.
   *
   * @param {Recorded} other Recorded object to check for equality.
   * @returns {Boolean} true if both objects are equal; false otherwise.
   */
  Recorded.prototype.equals = function (other) {
    return this.time === other.time && this.comparer(this.value, other.value);
  };

  /**
   * Returns a string representation of the current Recorded value.
   *
   * @returns {String} String representation of the current Recorded value.
   */
  Recorded.prototype.toString = function () {
    return this.value.toString() + '@' + this.time;
  };

  /**
   * Creates a new subscription object with the given virtual subscription and unsubscription time.
   *
   * @constructor
   * @param {Number} subscribe Virtual time at which the subscription occurred.
   * @param {Number} unsubscribe Virtual time at which the unsubscription occurred.
   */
  var Subscription = Rx.Subscription = function (start, end) {
    this.subscribe = start;
    this.unsubscribe = end || Number.MAX_VALUE;
  };

  /**
   * Checks whether the given subscription is equal to the current instance.
   * @param other Subscription object to check for equality.
   * @returns {Boolean} true if both objects are equal; false otherwise.
   */
  Subscription.prototype.equals = function (other) {
    return this.subscribe === other.subscribe && this.unsubscribe === other.unsubscribe;
  };

  /**
   * Returns a string representation of the current Subscription value.
   * @returns {String} String representation of the current Subscription value.
   */
  Subscription.prototype.toString = function () {
    return '(' + this.subscribe + ', ' + (this.unsubscribe === Number.MAX_VALUE ? 'Infinite' : this.unsubscribe) + ')';
  };

  var MockDisposable = Rx.MockDisposable = function (scheduler) {
    this.scheduler = scheduler;
    this.disposes = [];
    this.disposes.push(this.scheduler.clock);
  };

  MockDisposable.prototype.dispose = function () {
    this.disposes.push(this.scheduler.clock);
  };

  var MockObserver = (function (__super__) {
    inherits(MockObserver, __super__);

    function MockObserver(scheduler) {
      __super__.call(this);
      this.scheduler = scheduler;
      this.messages = [];
    }

    var MockObserverPrototype = MockObserver.prototype;

    MockObserverPrototype.onNext = function (value) {
      this.messages.push(new Recorded(this.scheduler.clock, Notification.createOnNext(value)));
    };

    MockObserverPrototype.onError = function (e) {
      this.messages.push(new Recorded(this.scheduler.clock, Notification.createOnError(e)));
    };

    MockObserverPrototype.onCompleted = function () {
      this.messages.push(new Recorded(this.scheduler.clock, Notification.createOnCompleted()));
    };

    return MockObserver;
  })(Observer);

  function MockPromise(scheduler, messages) {
    var self = this;
    this.scheduler = scheduler;
    this.messages = messages;
    this.subscriptions = [];
    this.observers = [];
    for (var i = 0, len = this.messages.length; i < len; i++) {
      var message = this.messages[i],
          notification = message.value;
      (function (innerNotification) {
        scheduler.scheduleAbsolute(null, message.time, function () {
          var obs = self.observers.slice(0);

          for (var j = 0, jLen = obs.length; j < jLen; j++) {
            innerNotification.accept(obs[j]);
          }
          return disposableEmpty;
        });
      })(notification);
    }
  }

  MockPromise.prototype.then = function (onResolved, onRejected) {
    var self = this;

    this.subscriptions.push(new Subscription(this.scheduler.clock));
    var index = this.subscriptions.length - 1;

    var newPromise;

    var observer = Rx.Observer.create(
      function (x) {
        var retValue = onResolved(x);
        if (retValue && typeof retValue.then === 'function') {
          newPromise = retValue;
        } else {
          var ticks = self.scheduler.clock;
          newPromise = new MockPromise(self.scheduler, [Rx.ReactiveTest.onNext(ticks, undefined), Rx.ReactiveTest.onCompleted(ticks)]);
        }
        var idx = self.observers.indexOf(observer);
        self.observers.splice(idx, 1);
        self.subscriptions[index] = new Subscription(self.subscriptions[index].subscribe, self.scheduler.clock);
      },
      function (err) {
        onRejected(err);
        var idx = self.observers.indexOf(observer);
        self.observers.splice(idx, 1);
        self.subscriptions[index] = new Subscription(self.subscriptions[index].subscribe, self.scheduler.clock);
      }
    );
    this.observers.push(observer);

    return newPromise || new MockPromise(this.scheduler, this.messages);
  };

  var HotObservable = (function (__super__) {
    inherits(HotObservable, __super__);

    function HotObservable(scheduler, messages) {
      __super__.call(this);
      var message, notification, observable = this;
      this.scheduler = scheduler;
      this.messages = messages;
      this.subscriptions = [];
      this.observers = [];
      for (var i = 0, len = this.messages.length; i < len; i++) {
        message = this.messages[i];
        notification = message.value;
        (function (innerNotification) {
          scheduler.scheduleAbsolute(null, message.time, function () {
            var obs = observable.observers.slice(0);

            for (var j = 0, jLen = obs.length; j < jLen; j++) {
              innerNotification.accept(obs[j]);
            }
            return disposableEmpty;
          });
        })(notification);
      }
    }

    HotObservable.prototype._subscribe = function (o) {
      var observable = this;
      this.observers.push(o);
      this.subscriptions.push(new Subscription(this.scheduler.clock));
      var index = this.subscriptions.length - 1;
      return disposableCreate(function () {
        var idx = observable.observers.indexOf(o);
        observable.observers.splice(idx, 1);
        observable.subscriptions[index] = new Subscription(observable.subscriptions[index].subscribe, observable.scheduler.clock);
      });
    };

    return HotObservable;
  })(Observable);

  var ColdObservable = (function (__super__) {
    inherits(ColdObservable, __super__);

    function ColdObservable(scheduler, messages) {
      __super__.call(this);
      this.scheduler = scheduler;
      this.messages = messages;
      this.subscriptions = [];
    }

    ColdObservable.prototype._subscribe = function (o) {
      var message, notification, observable = this;
      this.subscriptions.push(new Subscription(this.scheduler.clock));
      var index = this.subscriptions.length - 1;
      var d = new CompositeDisposable();
      for (var i = 0, len = this.messages.length; i < len; i++) {
        message = this.messages[i];
        notification = message.value;
        (function (innerNotification) {
          d.add(observable.scheduler.scheduleRelative(null, message.time, function () {
            innerNotification.accept(o);
            return disposableEmpty;
          }));
        })(notification);
      }
      return disposableCreate(function () {
        observable.subscriptions[index] = new Subscription(observable.subscriptions[index].subscribe, observable.scheduler.clock);
        d.dispose();
      });
    };

    return ColdObservable;
  })(Observable);

  /** Virtual time scheduler used for testing applications and libraries built using Reactive Extensions. */
  Rx.TestScheduler = (function (__super__) {
    inherits(TestScheduler, __super__);

    function baseComparer(x, y) {
      return x > y ? 1 : (x < y ? -1 : 0);
    }

    function TestScheduler() {
      __super__.call(this, 0, baseComparer);
    }

    /**
     * Schedules an action to be executed at the specified virtual time.
     *
     * @param state State passed to the action to be executed.
     * @param dueTime Absolute virtual time at which to execute the action.
     * @param action Action to be executed.
     * @return Disposable object used to cancel the scheduled action (best effort).
     */
    TestScheduler.prototype.scheduleAbsolute = function (state, dueTime, action) {
      dueTime <= this.clock && (dueTime = this.clock + 1);
      return __super__.prototype.scheduleAbsolute.call(this, state, dueTime, action);
    };
    /**
     * Adds a relative virtual time to an absolute virtual time value.
     *
     * @param absolute Absolute virtual time value.
     * @param relative Relative virtual time value to add.
     * @return Resulting absolute virtual time sum value.
     */
    TestScheduler.prototype.add = function (absolute, relative) {
      return absolute + relative;
    };
    /**
     * Converts the absolute virtual time value to a DateTimeOffset value.
     *
     * @param absolute Absolute virtual time value to convert.
     * @return Corresponding DateTimeOffset value.
     */
    TestScheduler.prototype.toAbsoluteTime = function (absolute) {
      return new Date(absolute).getTime();
    };
    /**
     * Converts the TimeSpan value to a relative virtual time value.
     *
     * @param timeSpan TimeSpan value to convert.
     * @return Corresponding relative virtual time value.
     */
    TestScheduler.prototype.toRelativeTime = function (timeSpan) {
      return timeSpan;
    };
    /**
     * Starts the test scheduler and uses the specified virtual times to invoke the factory function, subscribe to the resulting sequence, and dispose the subscription.
     *
     * @param create Factory method to create an observable sequence.
     * @param created Virtual time at which to invoke the factory to create an observable sequence.
     * @param subscribed Virtual time at which to subscribe to the created observable sequence.
     * @param disposed Virtual time at which to dispose the subscription.
     * @return Observer with timestamped recordings of notification messages that were received during the virtual time window when the subscription to the source sequence was active.
     */
    TestScheduler.prototype.startScheduler = function (createFn, settings) {
      settings || (settings = {});
      settings.created == null && (settings.created = ReactiveTest.created);
      settings.subscribed == null && (settings.subscribed = ReactiveTest.subscribed);
      settings.disposed == null && (settings.disposed = ReactiveTest.disposed);

      var observer = this.createObserver(), source, subscription;

      this.scheduleAbsolute(null, settings.created, function () {
        source = createFn();
        return disposableEmpty;
      });

      this.scheduleAbsolute(null, settings.subscribed, function () {
        subscription = source.subscribe(observer);
        return disposableEmpty;
      });

      this.scheduleAbsolute(null, settings.disposed, function () {
        subscription.dispose();
        return disposableEmpty;
      });

      this.start();

      return observer;
    };

    /**
     * Creates a hot observable using the specified timestamped notification messages either as an array or arguments.
     * @param messages Notifications to surface through the created sequence at their specified absolute virtual times.
     * @return Hot observable sequence that can be used to assert the timing of subscriptions and notifications.
     */
    TestScheduler.prototype.createHotObservable = function () {
      var len = arguments.length, args;
      if (Array.isArray(arguments[0])) {
        args = arguments[0];
      } else {
        args = new Array(len);
        for (var i = 0; i < len; i++) { args[i] = arguments[i]; }
      }
      return new HotObservable(this, args);
    };

    /**
     * Creates a cold observable using the specified timestamped notification messages either as an array or arguments.
     * @param messages Notifications to surface through the created sequence at their specified virtual time offsets from the sequence subscription time.
     * @return Cold observable sequence that can be used to assert the timing of subscriptions and notifications.
     */
    TestScheduler.prototype.createColdObservable = function () {
      var len = arguments.length, args;
      if (Array.isArray(arguments[0])) {
        args = arguments[0];
      } else {
        args = new Array(len);
        for (var i = 0; i < len; i++) { args[i] = arguments[i]; }
      }
      return new ColdObservable(this, args);
    };

    /**
     * Creates a resolved promise with the given value and ticks
     * @param {Number} ticks The absolute time of the resolution.
     * @param {Any} value The value to yield at the given tick.
     * @returns {MockPromise} A mock Promise which fulfills with the given value.
     */
    TestScheduler.prototype.createResolvedPromise = function (ticks, value) {
      return new MockPromise(this, [Rx.ReactiveTest.onNext(ticks, value), Rx.ReactiveTest.onCompleted(ticks)]);
    };

    /**
     * Creates a rejected promise with the given reason and ticks
     * @param {Number} ticks The absolute time of the resolution.
     * @param {Any} reason The reason for rejection to yield at the given tick.
     * @returns {MockPromise} A mock Promise which rejects with the given reason.
     */
    TestScheduler.prototype.createRejectedPromise = function (ticks, reason) {
      return new MockPromise(this, [Rx.ReactiveTest.onError(ticks, reason)]);
    };

    /**
     * Creates an observer that records received notification messages and timestamps those.
     * @return Observer that can be used to assert the timing of received notifications.
     */
    TestScheduler.prototype.createObserver = function () {
      return new MockObserver(this);
    };

    return TestScheduler;
  })(VirtualTimeScheduler);

  var AnonymousObservable = Rx.AnonymousObservable = (function (__super__) {
    inherits(AnonymousObservable, __super__);

    // Fix subscriber to check for undefined or function returned to decorate as Disposable
    function fixSubscriber(subscriber) {
      return subscriber && isFunction(subscriber.dispose) ? subscriber :
        isFunction(subscriber) ? disposableCreate(subscriber) : disposableEmpty;
    }

    function setDisposable(s, state) {
      var ado = state[0], self = state[1];
      var sub = tryCatch(self.__subscribe).call(self, ado);
      if (sub === errorObj && !ado.fail(errorObj.e)) { thrower(errorObj.e); }
      ado.setDisposable(fixSubscriber(sub));
    }

    function AnonymousObservable(subscribe, parent) {
      this.source = parent;
      this.__subscribe = subscribe;
      __super__.call(this);
    }

    AnonymousObservable.prototype._subscribe = function (o) {
      var ado = new AutoDetachObserver(o), state = [ado, this];

      if (currentThreadScheduler.scheduleRequired()) {
        currentThreadScheduler.schedule(state, setDisposable);
      } else {
        setDisposable(null, state);
      }
      return ado;
    };

    return AnonymousObservable;

  }(Observable));

  var AutoDetachObserver = (function (__super__) {
    inherits(AutoDetachObserver, __super__);

    function AutoDetachObserver(observer) {
      __super__.call(this);
      this.observer = observer;
      this.m = new SingleAssignmentDisposable();
    }

    var AutoDetachObserverPrototype = AutoDetachObserver.prototype;

    AutoDetachObserverPrototype.next = function (value) {
      var result = tryCatch(this.observer.onNext).call(this.observer, value);
      if (result === errorObj) {
        this.dispose();
        thrower(result.e);
      }
    };

    AutoDetachObserverPrototype.error = function (err) {
      var result = tryCatch(this.observer.onError).call(this.observer, err);
      this.dispose();
      result === errorObj && thrower(result.e);
    };

    AutoDetachObserverPrototype.completed = function () {
      var result = tryCatch(this.observer.onCompleted).call(this.observer);
      this.dispose();
      result === errorObj && thrower(result.e);
    };

    AutoDetachObserverPrototype.setDisposable = function (value) { this.m.setDisposable(value); };
    AutoDetachObserverPrototype.getDisposable = function () { return this.m.getDisposable(); };

    AutoDetachObserverPrototype.dispose = function () {
      __super__.prototype.dispose.call(this);
      this.m.dispose();
    };

    return AutoDetachObserver;
  }(AbstractObserver));

  var UnderlyingObservable = (function (__super__) {
    inherits(UnderlyingObservable, __super__);
    function UnderlyingObservable(m, u) {
      this._m = m;
      this._u = u;
      __super__.call(this);
    }

    UnderlyingObservable.prototype.subscribeCore = function (o) {
      return new BinaryDisposable(this._m.getDisposable(), this._u.subscribe(o));
    };

    return UnderlyingObservable;
  }(ObservableBase));

  var GroupedObservable = (function (__super__) {
    inherits(GroupedObservable, __super__);
    function GroupedObservable(key, underlyingObservable, mergedDisposable) {
      __super__.call(this);
      this.key = key;
      this.underlyingObservable = !mergedDisposable ?
        underlyingObservable :
        new UnderlyingObservable(mergedDisposable, underlyingObservable);
    }

    GroupedObservable.prototype._subscribe = function (o) {
      return this.underlyingObservable.subscribe(o);
    };

    return GroupedObservable;
  }(Observable));

  /**
   *  Represents an object that is both an observable sequence as well as an observer.
   *  Each notification is broadcasted to all subscribed observers.
   */
  var Subject = Rx.Subject = (function (__super__) {
    inherits(Subject, __super__);
    function Subject() {
      __super__.call(this);
      this.isDisposed = false;
      this.isStopped = false;
      this.observers = [];
      this.hasError = false;
    }

    addProperties(Subject.prototype, Observer.prototype, {
      _subscribe: function (o) {
        checkDisposed(this);
        if (!this.isStopped) {
          this.observers.push(o);
          return new InnerSubscription(this, o);
        }
        if (this.hasError) {
          o.onError(this.error);
          return disposableEmpty;
        }
        o.onCompleted();
        return disposableEmpty;
      },
      /**
       * Indicates whether the subject has observers subscribed to it.
       * @returns {Boolean} Indicates whether the subject has observers subscribed to it.
       */
      hasObservers: function () { checkDisposed(this); return this.observers.length > 0; },
      /**
       * Notifies all subscribed observers about the end of the sequence.
       */
      onCompleted: function () {
        checkDisposed(this);
        if (!this.isStopped) {
          this.isStopped = true;
          for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
            os[i].onCompleted();
          }

          this.observers.length = 0;
        }
      },
      /**
       * Notifies all subscribed observers about the exception.
       * @param {Mixed} error The exception to send to all observers.
       */
      onError: function (error) {
        checkDisposed(this);
        if (!this.isStopped) {
          this.isStopped = true;
          this.error = error;
          this.hasError = true;
          for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
            os[i].onError(error);
          }

          this.observers.length = 0;
        }
      },
      /**
       * Notifies all subscribed observers about the arrival of the specified element in the sequence.
       * @param {Mixed} value The value to send to all observers.
       */
      onNext: function (value) {
        checkDisposed(this);
        if (!this.isStopped) {
          for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
            os[i].onNext(value);
          }
        }
      },
      /**
       * Unsubscribe all observers and release resources.
       */
      dispose: function () {
        this.isDisposed = true;
        this.observers = null;
      }
    });

    /**
     * Creates a subject from the specified observer and observable.
     * @param {Observer} observer The observer used to send messages to the subject.
     * @param {Observable} observable The observable used to subscribe to messages sent from the subject.
     * @returns {Subject} Subject implemented using the given observer and observable.
     */
    Subject.create = function (observer, observable) {
      return new AnonymousSubject(observer, observable);
    };

    return Subject;
  }(Observable));

  /**
   *  Represents the result of an asynchronous operation.
   *  The last value before the OnCompleted notification, or the error received through OnError, is sent to all subscribed observers.
   */
  var AsyncSubject = Rx.AsyncSubject = (function (__super__) {
    inherits(AsyncSubject, __super__);

    /**
     * Creates a subject that can only receive one value and that value is cached for all future observations.
     * @constructor
     */
    function AsyncSubject() {
      __super__.call(this);
      this.isDisposed = false;
      this.isStopped = false;
      this.hasValue = false;
      this.observers = [];
      this.hasError = false;
    }

    addProperties(AsyncSubject.prototype, Observer.prototype, {
      _subscribe: function (o) {
        checkDisposed(this);

        if (!this.isStopped) {
          this.observers.push(o);
          return new InnerSubscription(this, o);
        }

        if (this.hasError) {
          o.onError(this.error);
        } else if (this.hasValue) {
          o.onNext(this.value);
          o.onCompleted();
        } else {
          o.onCompleted();
        }

        return disposableEmpty;
      },
      /**
       * Indicates whether the subject has observers subscribed to it.
       * @returns {Boolean} Indicates whether the subject has observers subscribed to it.
       */
      hasObservers: function () { checkDisposed(this); return this.observers.length > 0; },
      /**
       * Notifies all subscribed observers about the end of the sequence, also causing the last received value to be sent out (if any).
       */
      onCompleted: function () {
        var i, len;
        checkDisposed(this);
        if (!this.isStopped) {
          this.isStopped = true;
          var os = cloneArray(this.observers), len = os.length;

          if (this.hasValue) {
            for (i = 0; i < len; i++) {
              var o = os[i];
              o.onNext(this.value);
              o.onCompleted();
            }
          } else {
            for (i = 0; i < len; i++) {
              os[i].onCompleted();
            }
          }

          this.observers.length = 0;
        }
      },
      /**
       * Notifies all subscribed observers about the error.
       * @param {Mixed} error The Error to send to all observers.
       */
      onError: function (error) {
        checkDisposed(this);
        if (!this.isStopped) {
          this.isStopped = true;
          this.hasError = true;
          this.error = error;

          for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
            os[i].onError(error);
          }

          this.observers.length = 0;
        }
      },
      /**
       * Sends a value to the subject. The last value received before successful termination will be sent to all subscribed and future observers.
       * @param {Mixed} value The value to store in the subject.
       */
      onNext: function (value) {
        checkDisposed(this);
        if (this.isStopped) { return; }
        this.value = value;
        this.hasValue = true;
      },
      /**
       * Unsubscribe all observers and release resources.
       */
      dispose: function () {
        this.isDisposed = true;
        this.observers = null;
        this.error = null;
        this.value = null;
      }
    });

    return AsyncSubject;
  }(Observable));

  /**
   *  Represents a value that changes over time.
   *  Observers can subscribe to the subject to receive the last (or initial) value and all subsequent notifications.
   */
  var BehaviorSubject = Rx.BehaviorSubject = (function (__super__) {
    inherits(BehaviorSubject, __super__);
    function BehaviorSubject(value) {
      __super__.call(this);
      this.value = value;
      this.observers = [];
      this.isDisposed = false;
      this.isStopped = false;
      this.hasError = false;
    }

    addProperties(BehaviorSubject.prototype, Observer.prototype, {
      _subscribe: function (o) {
        checkDisposed(this);
        if (!this.isStopped) {
          this.observers.push(o);
          o.onNext(this.value);
          return new InnerSubscription(this, o);
        }
        if (this.hasError) {
          o.onError(this.error);
        } else {
          o.onCompleted();
        }
        return disposableEmpty;
      },
      /**
       * Gets the current value or throws an exception.
       * Value is frozen after onCompleted is called.
       * After onError is called always throws the specified exception.
       * An exception is always thrown after dispose is called.
       * @returns {Mixed} The initial value passed to the constructor until onNext is called; after which, the last value passed to onNext.
       */
      getValue: function () {
        checkDisposed(this);
        if (this.hasError) { thrower(this.error); }
        return this.value;
      },
      /**
       * Indicates whether the subject has observers subscribed to it.
       * @returns {Boolean} Indicates whether the subject has observers subscribed to it.
       */
      hasObservers: function () { checkDisposed(this); return this.observers.length > 0; },
      /**
       * Notifies all subscribed observers about the end of the sequence.
       */
      onCompleted: function () {
        checkDisposed(this);
        if (this.isStopped) { return; }
        this.isStopped = true;
        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
          os[i].onCompleted();
        }

        this.observers.length = 0;
      },
      /**
       * Notifies all subscribed observers about the exception.
       * @param {Mixed} error The exception to send to all observers.
       */
      onError: function (error) {
        checkDisposed(this);
        if (this.isStopped) { return; }
        this.isStopped = true;
        this.hasError = true;
        this.error = error;

        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
          os[i].onError(error);
        }

        this.observers.length = 0;
      },
      /**
       * Notifies all subscribed observers about the arrival of the specified element in the sequence.
       * @param {Mixed} value The value to send to all observers.
       */
      onNext: function (value) {
        checkDisposed(this);
        if (this.isStopped) { return; }
        this.value = value;
        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
          os[i].onNext(value);
        }
      },
      /**
       * Unsubscribe all observers and release resources.
       */
      dispose: function () {
        this.isDisposed = true;
        this.observers = null;
        this.value = null;
        this.error = null;
      }
    });

    return BehaviorSubject;
  }(Observable));

  /**
   * Represents an object that is both an observable sequence as well as an observer.
   * Each notification is broadcasted to all subscribed and future observers, subject to buffer trimming policies.
   */
  var ReplaySubject = Rx.ReplaySubject = (function (__super__) {

    var maxSafeInteger = Math.pow(2, 53) - 1;

    function createRemovableDisposable(subject, observer) {
      return disposableCreate(function () {
        observer.dispose();
        !subject.isDisposed && subject.observers.splice(subject.observers.indexOf(observer), 1);
      });
    }

    inherits(ReplaySubject, __super__);

    /**
     *  Initializes a new instance of the ReplaySubject class with the specified buffer size, window size and scheduler.
     *  @param {Number} [bufferSize] Maximum element count of the replay buffer.
     *  @param {Number} [windowSize] Maximum time length of the replay buffer.
     *  @param {Scheduler} [scheduler] Scheduler the observers are invoked on.
     */
    function ReplaySubject(bufferSize, windowSize, scheduler) {
      this.bufferSize = bufferSize == null ? maxSafeInteger : bufferSize;
      this.windowSize = windowSize == null ? maxSafeInteger : windowSize;
      this.scheduler = scheduler || currentThreadScheduler;
      this.q = [];
      this.observers = [];
      this.isStopped = false;
      this.isDisposed = false;
      this.hasError = false;
      this.error = null;
      __super__.call(this);
    }

    addProperties(ReplaySubject.prototype, Observer.prototype, {
      _subscribe: function (o) {
        checkDisposed(this);
        var so = new ScheduledObserver(this.scheduler, o), subscription = createRemovableDisposable(this, so);

        this._trim(this.scheduler.now());
        this.observers.push(so);

        for (var i = 0, len = this.q.length; i < len; i++) {
          so.onNext(this.q[i].value);
        }

        if (this.hasError) {
          so.onError(this.error);
        } else if (this.isStopped) {
          so.onCompleted();
        }

        so.ensureActive();
        return subscription;
      },
      /**
       * Indicates whether the subject has observers subscribed to it.
       * @returns {Boolean} Indicates whether the subject has observers subscribed to it.
       */
      hasObservers: function () { checkDisposed(this); return this.observers.length > 0; },
      _trim: function (now) {
        while (this.q.length > this.bufferSize) {
          this.q.shift();
        }
        while (this.q.length > 0 && (now - this.q[0].interval) > this.windowSize) {
          this.q.shift();
        }
      },
      /**
       * Notifies all subscribed observers about the arrival of the specified element in the sequence.
       * @param {Mixed} value The value to send to all observers.
       */
      onNext: function (value) {
        checkDisposed(this);
        if (this.isStopped) { return; }
        var now = this.scheduler.now();
        this.q.push({ interval: now, value: value });
        this._trim(now);

        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
          var observer = os[i];
          observer.onNext(value);
          observer.ensureActive();
        }
      },
      /**
       * Notifies all subscribed observers about the exception.
       * @param {Mixed} error The exception to send to all observers.
       */
      onError: function (error) {
        checkDisposed(this);
        if (this.isStopped) { return; }
        this.isStopped = true;
        this.error = error;
        this.hasError = true;
        var now = this.scheduler.now();
        this._trim(now);
        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
          var observer = os[i];
          observer.onError(error);
          observer.ensureActive();
        }
        this.observers.length = 0;
      },
      /**
       * Notifies all subscribed observers about the end of the sequence.
       */
      onCompleted: function () {
        checkDisposed(this);
        if (this.isStopped) { return; }
        this.isStopped = true;
        var now = this.scheduler.now();
        this._trim(now);
        for (var i = 0, os = cloneArray(this.observers), len = os.length; i < len; i++) {
          var observer = os[i];
          observer.onCompleted();
          observer.ensureActive();
        }
        this.observers.length = 0;
      },
      /**
       * Unsubscribe all observers and release resources.
       */
      dispose: function () {
        this.isDisposed = true;
        this.observers = null;
      }
    });

    return ReplaySubject;
  }(Observable));

  var AnonymousSubject = Rx.AnonymousSubject = (function (__super__) {
    inherits(AnonymousSubject, __super__);
    function AnonymousSubject(observer, observable) {
      this.observer = observer;
      this.observable = observable;
      __super__.call(this);
    }

    addProperties(AnonymousSubject.prototype, Observer.prototype, {
      _subscribe: function (o) {
        return this.observable.subscribe(o);
      },
      onCompleted: function () {
        this.observer.onCompleted();
      },
      onError: function (error) {
        this.observer.onError(error);
      },
      onNext: function (value) {
        this.observer.onNext(value);
      }
    });

    return AnonymousSubject;
  }(Observable));

  /**
  * Used to pause and resume streams.
  */
  Rx.Pauser = (function (__super__) {
    inherits(Pauser, __super__);
    function Pauser() {
      __super__.call(this);
    }

    /**
     * Pauses the underlying sequence.
     */
    Pauser.prototype.pause = function () { this.onNext(false); };

    /**
    * Resumes the underlying sequence.
    */
    Pauser.prototype.resume = function () { this.onNext(true); };

    return Pauser;
  }(Subject));

  if (true) {
    root.Rx = Rx;

    !(__WEBPACK_AMD_DEFINE_RESULT__ = (function() {
      return Rx;
    }).call(exports, __webpack_require__, exports, module),
				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
  } else if (freeExports && freeModule) {
    // in Node.js or RingoJS
    if (moduleExports) {
      (freeModule.exports = Rx).Rx = Rx;
    } else {
      freeExports.Rx = Rx;
    }
  } else {
    // in a browser or Rhino
    root.Rx = Rx;
  }

  // All code before this point will be filtered from stack traces.
  var rEndingLine = captureLine();

}.call(this));

/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(8)(module), __webpack_require__(5), __webpack_require__(22)))

/***/ }),

/***/ 8:
/***/ (function(module, exports) {

module.exports = function(module) {
	if(!module.webpackPolyfill) {
		module.deprecate = function() {};
		module.paths = [];
		// module.parent = undefined by default
		if(!module.children) module.children = [];
		Object.defineProperty(module, "loaded", {
			enumerable: true,
			get: function() {
				return module.l;
			}
		});
		Object.defineProperty(module, "id", {
			enumerable: true,
			get: function() {
				return module.i;
			}
		});
		module.webpackPolyfill = 1;
	}
	return module;
};


/***/ })

/******/ });
});