33 lines
1.7 KiB
TypeScript
33 lines
1.7 KiB
TypeScript
//// [taggedTemplateContextualTyping1.ts]
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type FuncType = (x: <T>(p: T) => T) => typeof x;
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function tempTag1<T>(templateStrs: TemplateStringsArray, f: FuncType, x: T): T;
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function tempTag1<T>(templateStrs: TemplateStringsArray, f: FuncType, h: FuncType, x: T): T;
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function tempTag1<T>(...rest: any[]): T {
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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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tempTag1 `${ x => { x<number>(undefined); return x; } }${ 10 }`;
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tempTag1 `${ x => { x<number>(undefined); return x; } }${ y => { y<number>(undefined); return y; } }${ 10 }`;
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tempTag1 `${ x => { x<number>(undefined); return x; } }${ (y: <T>(p: T) => T) => { y<number>(undefined); return y } }${ undefined }`;
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tempTag1 `${ (x: <T>(p: T) => T) => { x<number>(undefined); return x; } }${ y => { y<number>(undefined); return y; } }${ undefined }`;
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//// [taggedTemplateContextualTyping1.js]
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function tempTag1(...rest) {
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return undefined;
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}
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// If contextual typing takes place, these functions should work.
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// Otherwise, the arrow functions' parameters will be typed as 'any',
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// and it is an error to invoke an any-typed value with type arguments,
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// so this test will error.
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tempTag1 `${x => { x(undefined); return x; }}${10}`;
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tempTag1 `${x => { x(undefined); return x; }}${y => { y(undefined); return y; }}${10}`;
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tempTag1 `${x => { x(undefined); return x; }}${(y) => { y(undefined); return y; }}${undefined}`;
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tempTag1 `${(x) => { x(undefined); return x; }}${y => { y(undefined); return y; }}${undefined}`;
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