toObserver ​
Sugar function to convert a ref
into an RxJS Observer. Available in the @vueuse/rxjs add-on.
Usage ​
ts
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))
)
js
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 ​
typescript
export declare function toObserver<T>(value: Ref<T>): NextObserver<T>
Source ​
Contributors ​
Anthony Fu
Theodros Zelleke
Curt Grimes
yang
Michel Betancourt