toObserver

Category

@RxJS

Export Size

88 B

Package

@vueuse/rxjs

Last Changed

4 years ago

Sugar function to convert a ref into an RxJS Observer. Available in the @vueuse/rxjs add-on.

Usage

TypeScript

import { ref } from 'vue'
import { from, fromEvent, toObserver, useSubscription } from '@vueuse/rxjs'
import { interval } from 'rxjs'
import { map, mapTo, startWith, takeUntil, withLatestFrom } from 'rxjs/operators'

const count = ref(0)
const button = ref<HTMLButtonElement>(null)

useSubscription(
  interval(1000)
    .pipe(
      mapTo(1),
      takeUntil(fromEvent(button, 'click')),
      withLatestFrom(from(count).pipe(startWith(0))),
      map(([curr, total]) => curr + total),
    )
    .subscribe(toObserver(count)), // same as ).subscribe(val => (count.value = val))
)

import { ref } from 'vue'
import { from, fromEvent, toObserver, useSubscription } from '@vueuse/rxjs'
import { interval } from 'rxjs'
import {
  map,
  mapTo,
  startWith,
  takeUntil,
  withLatestFrom,
} from 'rxjs/operators'
const count = ref(0)
const button = ref(null)
useSubscription(
  interval(1000)
    .pipe(
      mapTo(1),
      takeUntil(fromEvent(button, 'click')),
      withLatestFrom(from(count).pipe(startWith(0))),
      map(([curr, total]) => curr + total),
    )
    .subscribe(toObserver(count)),
)

Type Declarations

export declare function toObserver<T>(value: Ref<T>): NextObserver<T>

Source

Source • Docs

Contributors

Anthony Fu

Theodros Zelleke

Curt Grimes

yang

Michel Betancourt

Changelog

No recent changes