Fixed console errors related with variables initialization

Author: ppelgmv

src/app/pages/assets/asset-viewer/asset-viewer.component.ts

@@ -17,7 +17,7 @@ import { Router } from '@angular/router';
 })
 export class AssetViewerComponent implements OnInit {
 
-  assets: Asset[];
+  assets: Asset[] = [];
 
   isTransferring = false;
   private fetch$ = new BehaviorSubject(null);

src/app/pages/catalog/catalog-browser/catalog-browser.component.ts

@@ -15,7 +15,7 @@ import { Router } from '@angular/router';
 })
 export class CatalogBrowserComponent implements OnInit {
 
-  dataOffers: DataOffer[];
+  dataOffers: DataOffer[] = [];
 
   // Pagination
   pageSize = 10;

src/app/pages/contract-definitions/contract-definition-viewer/contract-definition-viewer.component.ts

@@ -17,7 +17,7 @@ import { Router } from '@angular/router';
 })
 export class ContractDefinitionViewerComponent implements OnInit {
 
-  contractDefinitions: ContractDefinition[];
+  contractDefinitions: ContractDefinition[] = [];
   private fetch$ = new BehaviorSubject(null);
 
   // Pagination

src/app/pages/contracts/contract-viewer/contract-viewer.component.ts

@@ -29,7 +29,7 @@ interface RunningTransferProcess {
 })
 export class ContractViewerComponent implements OnInit {
 
-  contracts: ContractAgreement[];
+  contracts: ContractAgreement[] = [];
   private runningTransfers: RunningTransferProcess[] = [];
   private pollingHandleTransfer?: any;
   PARTICIPANT_ID = `${environment.runtime.participantId}`;

src/app/pages/policies/policy-view/policy-view.component.ts

@@ -23,7 +23,7 @@ export class PolicyViewComponent implements OnInit {
   deleteDone = new EventEmitter();
 
   policies: PolicyDefinition[];
-  policyCards: PolicyCard[];
+  policyCards: PolicyCard[] = [];
   private fetch$ = new BehaviorSubject(null);
   private readonly errorOrUpdateSubscriber: Observer<IdResponse>;
 

src/app/pages/vocabularies/vocabulary-viewer/vocabulary-viewer.component.ts

@@ -17,7 +17,7 @@ import { Router } from '@angular/router';
 })
 export class VocabularyViewerComponent implements OnInit {
 
-  vocabularies: Vocabulary[];
+  vocabularies: Vocabulary[] = [];
 
   isTransferring = false;
   private fetch$ = new BehaviorSubject(null);