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fix: trigger when adding new property with Vue.set #12972

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fix: trigger when adding new property with Vue.set #12972

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4d51702
fix: trigger when adding new property with Vue.seta and piWatch test
xiaowei-one Feb 28, 2023
49af00c
fix: should be call(source)
xiaowei-one Feb 28, 2023
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13 changes: 11 additions & 2 deletions src/v3/apiWatch.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -218,8 +218,17 @@ function doWatch(
})
} else if (isFunction(source)) {
if (cb) {
// getter with cb
getter = () => call(source, WATCHER_GETTER)
const ob = call(source, WATCHER_GETTER)
if (isReactive(ob)){
getter = () => {
;(ob as any).__ob__.dep.depend()
return ob
}
deep = true
} else {
// getter with cb
getter = () => call(source, WATCHER_GETTER)
}
} else {
// no cb -> simple effect
getter = () => {
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11 changes: 11 additions & 0 deletions test/unit/features/v3/apiWatch.spec.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -1200,4 +1200,15 @@ describe('api: watch', () => {
expect(parentSpy).toHaveBeenCalledTimes(1)
expect(childSpy).toHaveBeenCalledTimes(1)
})

// #12967
test('trigger when adding new property with Vue.set', async () => {
const spy = vi.fn()
const r = reactive({ exist: 5 })
watch(() => r, spy, { deep: true })
set(r, 'add', 1)

await nextTick()
expect(spy).toHaveBeenCalledTimes(1)
})
})