135 lines
8.2 KiB
Plaintext
135 lines
8.2 KiB
Plaintext
=== tests/cases/compiler/awaitedTypeStrictNull.ts ===
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type T1 = Awaited<number>;
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>T1 : number
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type T2 = Awaited<Promise<number>>;
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>T2 : number
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type T3 = Awaited<number | Promise<number>>;
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>T3 : number
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type T4 = Awaited<number | Promise<string>>;
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>T4 : T4
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type T5 = Awaited<{ then: number }>;
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>T5 : { then: number; }
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>then : number
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type T6 = Awaited<{ then(): void }>; // never (non-promise "thenable")
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>T6 : never
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>then : () => void
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type T7 = Awaited<{ then(x: number): void }>; // never (non-promise "thenable")
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>T7 : never
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>then : (x: number) => void
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>x : number
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type T8 = Awaited<{ then(x: () => void): void }>; // unknown
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>T8 : unknown
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>then : (x: () => void) => void
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>x : () => void
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type T9 = Awaited<any>;
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>T9 : any
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type T10 = Awaited<never>;
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>T10 : never
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type T11 = Awaited<unknown>;
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>T11 : unknown
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type T12 = Awaited<Promise<Promise<number>>>;
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>T12 : number
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type T13 = _Expect<Awaited<Promise<Promise<number>> | string | null>, /*expected*/ string | number | null>; // otherwise just prints T13 in types tests, which isn't very helpful
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>T13 : string | number | null
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>null : null
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>null : null
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type T14 = _Expect<Awaited<Promise<Promise<number>> | string | undefined>, /*expected*/ string | number | undefined>; // otherwise just prints T14 in types tests, which isn't very helpful
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>T14 : string | number | undefined
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type T15 = _Expect<Awaited<Promise<Promise<number>> | string | null | undefined>, /*expected*/ string | number | null | undefined>; // otherwise just prints T15 in types tests, which isn't very helpful
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>T15 : string | number | null | undefined
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>null : null
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>null : null
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interface BadPromise { then(cb: (value: BadPromise) => void): void; }
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>then : (cb: (value: BadPromise) => void) => void
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>cb : (value: BadPromise) => void
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>value : BadPromise
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type T16 = Awaited<BadPromise>; // error
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>T16 : any
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interface BadPromise1 { then(cb: (value: BadPromise2) => void): void; }
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>then : (cb: (value: BadPromise2) => void) => void
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>cb : (value: BadPromise2) => void
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>value : BadPromise2
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interface BadPromise2 { then(cb: (value: BadPromise1) => void): void; }
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>then : (cb: (value: BadPromise1) => void) => void
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>cb : (value: BadPromise1) => void
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>value : BadPromise1
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type T17 = Awaited<BadPromise1>; // error
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>T17 : any
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// https://github.com/microsoft/TypeScript/issues/33562
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type MaybePromise<T> = T | Promise<T> | PromiseLike<T>
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>MaybePromise : MaybePromise<T>
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declare function MaybePromise<T>(value: T): MaybePromise<T>;
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>MaybePromise : <T>(value: T) => MaybePromise<T>
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>value : T
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async function main() {
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>main : () => Promise<void>
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let aaa: number;
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>aaa : number
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let bbb: string;
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>bbb : string
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[
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>[ aaa, bbb, ] = await Promise.all([ MaybePromise(1), MaybePromise('2'), MaybePromise(true), ]) : [number, string, boolean]
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>[ aaa, bbb, ] : [number, string]
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aaa,
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>aaa : number
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bbb,
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>bbb : string
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] = await Promise.all([
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>await Promise.all([ MaybePromise(1), MaybePromise('2'), MaybePromise(true), ]) : [number, string, boolean]
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>Promise.all([ MaybePromise(1), MaybePromise('2'), MaybePromise(true), ]) : Promise<[number, string, boolean]>
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>Promise.all : { <T>(values: Iterable<T | PromiseLike<T>>): Promise<Awaited<T>[]>; <T extends readonly unknown[] | []>(values: T): Promise<{ -readonly [P in keyof T]: Awaited<T[P]>; }>; <T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>, T4 | PromiseLike<T4>, T5 | PromiseLike<T5>, T6 | PromiseLike<T6>, T7 | PromiseLike<T7>, T8 | PromiseLike<T8>, T9 | PromiseLike<T9>, T10 | PromiseLike<T10>]): Promise<[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10]>; <T1, T2, T3, T4, T5, T6, T7, T8, T9>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>, T4 | PromiseLike<T4>, T5 | PromiseLike<T5>, T6 | PromiseLike<T6>, T7 | PromiseLike<T7>, T8 | PromiseLike<T8>, T9 | PromiseLike<T9>]): Promise<[T1, T2, T3, T4, T5, T6, T7, T8, T9]>; <T1, T2, T3, T4, T5, T6, T7, T8>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>, T4 | PromiseLike<T4>, T5 | PromiseLike<T5>, T6 | PromiseLike<T6>, T7 | PromiseLike<T7>, T8 | PromiseLike<T8>]): Promise<[T1, T2, T3, T4, T5, T6, T7, T8]>; <T1, T2, T3, T4, T5, T6, T7>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>, T4 | PromiseLike<T4>, T5 | PromiseLike<T5>, T6 | PromiseLike<T6>, T7 | PromiseLike<T7>]): Promise<[T1, T2, T3, T4, T5, T6, T7]>; <T1, T2, T3, T4, T5, T6>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>, T4 | PromiseLike<T4>, T5 | PromiseLike<T5>, T6 | PromiseLike<T6>]): Promise<[T1, T2, T3, T4, T5, T6]>; <T1, T2, T3, T4, T5>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>, T4 | PromiseLike<T4>, T5 | PromiseLike<T5>]): Promise<[T1, T2, T3, T4, T5]>; <T1, T2, T3, T4>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>, T4 | PromiseLike<T4>]): Promise<[T1, T2, T3, T4]>; <T1, T2, T3>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>]): Promise<[T1, T2, T3]>; <T1, T2>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>]): Promise<[T1, T2]>; }
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>Promise : PromiseConstructor
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>all : { <T>(values: Iterable<T | PromiseLike<T>>): Promise<Awaited<T>[]>; <T extends readonly unknown[] | []>(values: T): Promise<{ -readonly [P in keyof T]: Awaited<T[P]>; }>; <T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>, T4 | PromiseLike<T4>, T5 | PromiseLike<T5>, T6 | PromiseLike<T6>, T7 | PromiseLike<T7>, T8 | PromiseLike<T8>, T9 | PromiseLike<T9>, T10 | PromiseLike<T10>]): Promise<[T1, T2, T3, T4, T5, T6, T7, T8, T9, T10]>; <T1, T2, T3, T4, T5, T6, T7, T8, T9>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>, T4 | PromiseLike<T4>, T5 | PromiseLike<T5>, T6 | PromiseLike<T6>, T7 | PromiseLike<T7>, T8 | PromiseLike<T8>, T9 | PromiseLike<T9>]): Promise<[T1, T2, T3, T4, T5, T6, T7, T8, T9]>; <T1, T2, T3, T4, T5, T6, T7, T8>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>, T4 | PromiseLike<T4>, T5 | PromiseLike<T5>, T6 | PromiseLike<T6>, T7 | PromiseLike<T7>, T8 | PromiseLike<T8>]): Promise<[T1, T2, T3, T4, T5, T6, T7, T8]>; <T1, T2, T3, T4, T5, T6, T7>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>, T4 | PromiseLike<T4>, T5 | PromiseLike<T5>, T6 | PromiseLike<T6>, T7 | PromiseLike<T7>]): Promise<[T1, T2, T3, T4, T5, T6, T7]>; <T1, T2, T3, T4, T5, T6>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>, T4 | PromiseLike<T4>, T5 | PromiseLike<T5>, T6 | PromiseLike<T6>]): Promise<[T1, T2, T3, T4, T5, T6]>; <T1, T2, T3, T4, T5>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>, T4 | PromiseLike<T4>, T5 | PromiseLike<T5>]): Promise<[T1, T2, T3, T4, T5]>; <T1, T2, T3, T4>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>, T4 | PromiseLike<T4>]): Promise<[T1, T2, T3, T4]>; <T1, T2, T3>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>, T3 | PromiseLike<T3>]): Promise<[T1, T2, T3]>; <T1, T2>(values: readonly [T1 | PromiseLike<T1>, T2 | PromiseLike<T2>]): Promise<[T1, T2]>; }
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>[ MaybePromise(1), MaybePromise('2'), MaybePromise(true), ] : [number | Promise<1> | PromiseLike<1>, string | Promise<"2"> | PromiseLike<"2">, MaybePromise<true>]
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MaybePromise(1),
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>MaybePromise(1) : 1 | Promise<1> | PromiseLike<1>
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>MaybePromise : <T>(value: T) => MaybePromise<T>
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>1 : 1
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MaybePromise('2'),
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>MaybePromise('2') : "2" | Promise<"2"> | PromiseLike<"2">
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>MaybePromise : <T>(value: T) => MaybePromise<T>
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>'2' : "2"
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MaybePromise(true),
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>MaybePromise(true) : true | Promise<true> | PromiseLike<true>
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>MaybePromise : <T>(value: T) => MaybePromise<T>
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>true : true
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])
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}
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// helps with tests where '.types' just prints out the type alias name
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type _Expect<TActual extends TExpected, TExpected> = TActual;
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>_Expect : TActual
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