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fix(type): fix prop type infer #4530

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merged 2 commits into from Sep 6, 2021
Merged

fix(type): fix prop type infer #4530

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027045b
fix(type): fix prop type infer
Sep 6, 2021
3d66e65
update
Sep 6, 2021
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8 changes: 4 additions & 4 deletions packages/runtime-core/src/componentProps.ts
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Expand Up @@ -109,10 +109,10 @@ type InferPropType<T> = [T] extends [null]
? boolean
: [T] extends [DateConstructor | { type: DateConstructor }]
? Date
: [T] extends [
(DateConstructor | infer U)[] | { type: (DateConstructor | infer U)[] }
]
? Date | InferPropType<U>
: [T] extends [(infer U)[] | { type: (infer U)[] }]
? U extends DateConstructor
? Date | InferPropType<U>
: InferPropType<U>
: [T] extends [Prop<infer V, infer D>]
? unknown extends V
? D
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5 changes: 4 additions & 1 deletion test-dts/defineComponent.test-d.tsx
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Expand Up @@ -44,6 +44,7 @@ describe('with object props', () => {
date?: Date
l?: Date
ll?: Date | number
lll?: string | number
}

type GT = string & { __brand: unknown }
Expand Down Expand Up @@ -135,7 +136,8 @@ describe('with object props', () => {
},
date: Date,
l: [Date],
ll: [Date, Number]
ll: [Date, Number],
lll: [String, Number]
},
setup(props) {
// type assertion. See https://github.com/SamVerschueren/tsd
Expand Down Expand Up @@ -170,6 +172,7 @@ describe('with object props', () => {
expectType<ExpectedProps['date']>(props.date)
expectType<ExpectedProps['l']>(props.l)
expectType<ExpectedProps['ll']>(props.ll)
expectType<ExpectedProps['lll']>(props.lll)

// @ts-expect-error props should be readonly
expectError((props.a = 1))
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