startWith does not exist on type Subject<unknow>

[Paulo Silva]

I got this code below

resetTimer$ = new Subject();

  ngOnInit() {

    this.resetTimer$

      startWith(null)

      .takeUntil(this.destroyed$)

      .switchMap(t => Observable.timer(5000, 5000))

      .subscribe(() => this.next())

  }

I'm using  Angular 10 and i'm getting this error:

startWith does not exist on type Subject<unknow>

How can i solve this problem? 

[bastien lemaire]

this.resetTimer$.pipe(

  startWith(),

  takeUntil(),

  ...

)

Bastien Lemaire

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[Paulo Silva]

I made this way but remain the same error like this

[bastien lemaire]

Ok you need to import the functions:

import {startWith, takeUntil, switchMap} from 'rxjs/operators';

class Component {

  public ngOnInit(): void {

    this.resetTimers$.pipe(

      startWith(10),

      switchMap(),

      takeUntil()

    )

    .subscribe()

    ;

  }

}

I typed this up quickly there could be some typos.

NOTE subscribe goes after the closing bracket of the pipe() function

Bastien Lemaire

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[Paulo Silva]

Ok, @Bastien Lemaire, your approach worked! Thank you

 I'm getting started with Angular. 

Em quarta-feira, 29 de julho de 2020 12:25:10 UTC-3, Paulo Silva escreveu:

[Paulo Silva]

Hi, i wrote that is worked, but not. The line 

switchMap(t => Observable.timer(5000, 5000)))

says Property timer does not exist on type ' typeof Observable

Em quarta-feira, 29 de julho de 2020 12:25:10 UTC-3, Paulo Silva escreveu:

[Paulo Silva]

I imported timer as wich import { Observable, timer } from rxjs and i removed Observable from t => Observable.timer  and now i will run

Em quarta-feira, 29 de julho de 2020 12:25:10 UTC-3, Paulo Silva escreveu:

[Paulo Silva]

Not worked

Em quarta-feira, 29 de julho de 2020 12:25:10 UTC-3, Paulo Silva escreveu:

[Scott Logsdon]

You don't have to use RXJS.  

https://stackblitz.com/edit/angular-ivy-2trhnm

Best Regards,

 

Scott Logsdon, Web Developer
Ser.vi Worldwide LLC USA & Ser.vi BV Europe
Email: sc...@ser.vi

 

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