15 lines
640 B
TypeScript
15 lines
640 B
TypeScript
// @target: es6
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// @strict: true
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declare function f(cb: (v: boolean) => [0] | PromiseLike<[0]>): void;
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f(v => v ? [0] : Promise.reject());
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f(async v => v ? [0] : Promise.reject());
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declare function g(cb: (v: boolean) => "contextuallyTypable" | PromiseLike<"contextuallyTypable">): void;
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g(v => v ? "contextuallyTypable" : Promise.reject());
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g(async v => v ? "contextuallyTypable" : Promise.reject());
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type MyCallback = (thing: string) => void;
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declare function h(cb: (v: boolean) => MyCallback | PromiseLike<MyCallback>): void;
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h(v => v ? (abc) => { } : Promise.reject());
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h(async v => v ? (def) => { } : Promise.reject());
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