CODEWITHSUNDEEP
angularrxjsrxjs5
Amir Ghezelbash
Amir Ghezelbash

Reputation: 2415

angular 2 - Property 'skipLast' does not exist on type 'Observable<number>'

i'm using Behavior Subject in a angular 2 component and i want the second emitted value before last one , RxJs document says i should use skipLast method on my stream to ignore them but i get an error while using it that says :

Property 'skipLast' does not exist on type 'Observable'

Angular version : 2.3.1 Rx.js version : 5.0.3

here is my code : 

import 'rxjs'
import { BehaviorSubject } from 'rxjs/BehaviorSubject'

@Component({
  ...
})

export class FilesComponent {
  folderId: BehaviorSubject<number> = new BehaviorSubject(0)

  constructor() {
    this.folderId.skipLast(2).subscribe(
      value => { console.log(value) }
    )
  }    

  clickHandler(fileId: number): void {
      this.folderId.next(fileId)
  }

}

Upvotes: 2

Views: 717

Answers (2)

Amir Ghezelbash
Amir Ghezelbash

Reputation: 2415

skip last operator is now added to RxJS 5 https://github.com/ReactiveX/rxjs/pull/2316

Upvotes: 3

G&#252;nter Z&#246;chbauer
G&#252;nter Z&#246;chbauer

Reputation: 657741

Add

import 'rxjs/add/operator/skipLast'

Actually, there is no skipLast operator.

https://github.com/ReactiveX/rxjs/blob/eb462bf8836d1bc27db5d11a9ea7cb4fa4b90f19/MIGRATION.md

skipLast | No longer implemented

Upvotes: 2

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