31 lines
1.5 KiB
TypeScript
31 lines
1.5 KiB
TypeScript
//// [taggedTemplateContextualTyping2.ts]
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type FuncType1 = (x: <T>(p: T) => T) => typeof x;
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type FuncType2 = (x: <S, T>(p: T) => T) => typeof x;
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function tempTag2(templateStrs: TemplateStringsArray, f: FuncType1, x: number): number;
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function tempTag2(templateStrs: TemplateStringsArray, f: FuncType2, h: FuncType2, x: string): string;
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function tempTag2(...rest: any[]): any {
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return undefined;
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}
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// If contextual typing takes place, these functions should work.
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// Otherwise, the arrow functions' parameters will be typed as 'any',
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// and it is an error to invoke an any-typed value with type arguments,
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// so this test will error.
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tempTag2 `${ x => { x<number>(undefined); return x; } }${ 0 }`;
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tempTag2 `${ x => { x<number, string>(undefined); return x; } }${ y => { y<string, number>(null); return y; } }${ "hello" }`;
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tempTag2 `${ x => { x<number, string>(undefined); return x; } }${ undefined }${ "hello" }`;
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//// [taggedTemplateContextualTyping2.js]
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function tempTag2(...rest) {
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return undefined;
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}
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// If contextual typing takes place, these functions should work.
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// Otherwise, the arrow functions' parameters will be typed as 'any',
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// and it is an error to invoke an any-typed value with type arguments,
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// so this test will error.
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tempTag2 `${x => { x(undefined); return x; }}${0}`;
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tempTag2 `${x => { x(undefined); return x; }}${y => { y(null); return y; }}${"hello"}`;
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tempTag2 `${x => { x(undefined); return x; }}${undefined}${"hello"}`;
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