rxjs6地图未打印期望值

Question

我希望在控制台窗口中打印以下值：

0 10 20 30 40

我越来越 0 1个 2 3 4

import { Component } from '@angular/core';
import { interval, timer  } from 'rxjs'
import { take, map } from 'rxjs/operators';

@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})

导出类AppComponent {       mySubject $       ngOnInit（）{     //每1秒发射一次值     const source = interval（1000）;

//when timer emits after 5s, complete source
const numbers$ = source.pipe(take(5));

numbers$
.pipe(map(x => x * 10))
.subscribe(x =>
  console.log(x));
}

ngOnDestroy(){
  this.mySubject$.unsubscribe();
}
}