29 lines
1,014 B
TypeScript
29 lines
1,014 B
TypeScript
// @strict: true
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// @declaration: true
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type A = { a: string };
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type B = { b: string };
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type T01 = keyof (A & B); // "a" | "b"
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type T02<T> = keyof (T & B); // "b" | keyof T
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type T03<U> = keyof (A & U); // "a" | keyof U
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type T04<T, U> = keyof (T & U); // keyof T | keyof U
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type T05 = T02<A>; // "a" | "b"
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type T06 = T03<B>; // "a" | "b"
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type T07 = T04<A, B>; // "a" | "b"
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// Repros from #22291
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type Example1<T extends string, U extends string> = keyof (Record<T, any> & Record<U, any>);
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type Result1 = Example1<'x', 'y'>; // "x" | "y"
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type Result2 = keyof (Record<'x', any> & Record<'y', any>); // "x" | "y"
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type Example3<T extends string> = keyof (Record<T, any>);
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type Result3 = Example3<'x' | 'y'>; // "x" | "y"
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type Example4<T extends string, U extends string> = (Record<T, any> & Record<U, any>);
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type Result4 = keyof Example4<'x', 'y'>; // "x" | "y"
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type Example5<T, U> = keyof (T & U);
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type Result5 = Example5<Record<'x', any>, Record<'y', any>>; // "x" | "y"
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