[CST-3088] Fixed lint errors

src/app/core/submission/vocabularies/vocabulary.service.spec.ts

@@ -607,7 +607,6 @@ describe('VocabularyService', () => {
       });
     });
 
-
     describe('searchByTop', () => {
       it('should proxy the call to vocabularyEntryDetailDataService.searchBy', () => {
         const options: VocabularyFindOptions = new VocabularyFindOptions(

src/app/shared/form/builder/ds-dynamic-form-ui/models/onebox/dynamic-onebox.component.spec.ts

@@ -65,7 +65,7 @@ describe('DsDynamicOneboxComponent test suite', () => {
   let vocabularyServiceStub: any;
   let html;
   let modal;
-  let vocabulary = {
+  const vocabulary = {
     id: 'vocabulary',
     name: 'vocabulary',
     scrollable: true,
@@ -82,7 +82,7 @@ describe('DsDynamicOneboxComponent test suite', () => {
     }
   }
 
-  let hierarchicalVocabulary = {
+  const hierarchicalVocabulary = {
     id: 'hierarchicalVocabulary',
     name: 'hierarchicalVocabulary',
     scrollable: true,

src/app/shared/vocabulary-treeview/vocabulary-treeview.service.ts

@@ -230,7 +230,7 @@ export class VocabularyTreeviewService {
     const entryDetail: VocabularyEntryDetail = Object.assign(new VocabularyEntryDetail(), entry, {
       id: entryId
     });
-    const hasChildren = entry.hasOtherInformation() && (entry.otherInformation as any)!.hasChildren == 'true';
+    const hasChildren = entry.hasOtherInformation() && (entry.otherInformation as any)!.hasChildren === 'true';
     const pageInfo: PageInfo = this.pageInfo;
     const isInInitValueHierarchy = this.initValueHierarchy.includes(entryId);
     const result = new TreeviewNode(