fix(watch): type inference for computed refs

2019-10-14 12:15:09 -04:00
parent 6bd26636c3
commit 6b3ad95fa4
2 changed files with 14 additions and 1 deletions
--- a/packages/runtime-core/src/apiWatch.ts
+++ b/packages/runtime-core/src/apiWatch.ts
@@ -3,6 +3,7 @@ import {
  stop,
  isRef,
  Ref,
+  ComputedRef,
  ReactiveEffectOptions
 } from '@vue/reactivity'
 import { queueJob } from './scheduler'
@@ -32,7 +33,7 @@ export interface WatchOptions {

 type StopHandle = () => void

-type WatcherSource<T = any> = Ref<T> | (() => T)
+type WatcherSource<T = any> = Ref<T> | ComputedRef<T> | (() => T)

 type MapSources<T> = {
  [K in keyof T]: T[K] extends WatcherSource<infer V> ? V : never