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26 lines
1.2 KiB
TypeScript
26 lines
1.2 KiB
TypeScript
// @target: ES6
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// @noEmitHelpers: true
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declare class Thenable { then(): void; }
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declare let a: any;
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declare let obj: { then: string; };
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declare let thenable: Thenable;
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async function fn1() { } // valid: Promise<void>
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async function fn2(): { } { } // error
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async function fn3(): any { } // error
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async function fn4(): number { } // error
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async function fn5(): PromiseLike<void> { } // error
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async function fn6(): Thenable { } // error
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async function fn7() { return; } // valid: Promise<void>
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async function fn8() { return 1; } // valid: Promise<number>
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async function fn9() { return null; } // valid: Promise<any>
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async function fn10() { return undefined; } // valid: Promise<any>
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async function fn11() { return a; } // valid: Promise<any>
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async function fn12() { return obj; } // valid: Promise<{ then: string; }>
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async function fn13() { return thenable; } // error
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async function fn14() { await 1; } // valid: Promise<void>
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async function fn15() { await null; } // valid: Promise<void>
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async function fn16() { await undefined; } // valid: Promise<void>
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async function fn17() { await a; } // valid: Promise<void>
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async function fn18() { await obj; } // valid: Promise<void>
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async function fn19() { await thenable; } // error
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