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- import { Injectable } from '@angular/core';
- import { BehaviorSubject } from 'rxjs';
- @Injectable({
- providedIn: 'root'
- })
- export class DataService {
- private messageSource = new BehaviorSubject('');
- currentMessage = this.messageSource.asObservable();
- constructor() { }
- changeMessage(message: string) {
- this.messageSource.next(message)
- }
- }
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