stack/v1/packages/mosaic/framework/skills/vueuse-functions/references/toObserver.md

category

category
@RxJS

toObserver

Sugar function to convert a ref into an RxJS Observer.

Usage

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

const count = shallowRef(0);
const button = useTemplateRef('buttonRef');

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))
);

Type Declarations

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