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fix(types): ensure correct oldValue typing based on lazy option

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close #719
This commit is contained in:
Evan You
2020-02-13 12:08:21 -05:00
parent 8e19424c04
commit c6a9787941
3 changed files with 88 additions and 15 deletions
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13
packages/runtime-core/__tests__/apiWatch.spec.ts
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@@ -63,7 +63,9 @@ describe('api: watch', () => {
dummy = [count, prevCount]
// assert types
count + 1
prevCount + 1
if (prevCount) {
prevCount + 1
}
}
)
await nextTick()
@@ -81,7 +83,9 @@ describe('api: watch', () => {
dummy = [count, prevCount]
// assert types
count + 1
prevCount + 1
if (prevCount) {
prevCount + 1
}
})
await nextTick()
expect(dummy).toMatchObject([0, undefined])
@@ -99,7 +103,9 @@ describe('api: watch', () => {
dummy = [count, prevCount]
// assert types
count + 1
prevCount + 1
if (prevCount) {
prevCount + 1
}
})
await nextTick()
expect(dummy).toMatchObject([1, undefined])
@@ -377,6 +383,7 @@ describe('api: watch', () => {
it('ignore lazy option when using simple callback', async () => {
const count = ref(0)
let dummy
// @ts-ignore
watch(
() => {
dummy = count.value