wamr-87.ts

import { HttpClient } from '@angular/common/http';
import { Component, OnInit } from '@angular/core';
import { interval } from 'rxjs';
import { map, takeUntil } from 'rxjs/operators';
import { BaseComponent } from './base-component';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent extends BaseComponent implements OnInit {

  constructor(private _http: HttpClient) {
    super();
  }

  public ngOnInit() {
    interval(1000)
      .pipe(
        takeUntil(this.destroy$),
        map(() => this._http.put('http://localhost:3000/documents/1', { lastUpdate: new Date() }))
      )
      .subscribe(() => console.log('Document saved!'));
  }

}