55 lines
835 B
TypeScript
55 lines
835 B
TypeScript
type A = { a: string };
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type B = { b: number };
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type C = { c: string };
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type D = { d: number };
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type F0 = () => void;
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// #31547
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type F1 = (this: A) => void;
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type F2 = (this: B) => void;
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declare var f1: F1 | F2;
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f1(); // error
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declare var f2: F0 | F1;
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f2(); // error
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interface F3 {
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(this: A): void;
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(this: B): void;
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}
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interface F4 {
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(this: C): void;
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(this: D): void;
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}
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interface F5 {
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(this: C): void;
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(this: B): void;
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}
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declare var x1: A & C & {
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f0: F0 | F3;
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f1: F1 | F3;
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f2: F1 | F4;
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f3: F3 | F4;
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f4: F3 | F5;
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}
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x1.f0();
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x1.f1();
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x1.f2();
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x1.f3(); // error
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x1.f4(); // error
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declare var x2: A & B & {
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f4: F3 | F5;
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}
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x2.f4();
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type F6 = (this: A & B) => void;
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declare var f3: F1 | F6;
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f3(); // error
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interface F7 {
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(this: A & B & C): void;
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(this: A & B): void;
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}
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declare var f4: F6 | F7;
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f4(); // error
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