import { Injectable } from '@angular/core' ; import { ControlContainer } from '@angular/forms' ; import { NgbNav } from '@ng-bootstrap/ng-bootstrap' ; @ Injectable ( ) export class ObMockUnsavedChangesTabsService { watch ( formId , form ) { } unWatch ( formId ) { } listenTo ( ngbTabset ) { } unListenTo ( ngbTabset ) { } canDeactivate ( ) { return true ; } ignoreChanges ( formIds ) { return true ; } }