25 lines
469 B
TypeScript
25 lines
469 B
TypeScript
interface A {
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foo(): string;
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}
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interface B extends A {
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bar(): number;
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}
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interface C extends A {
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baz(): number;
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}
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var a: A;
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var b: B;
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var c: C;
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function foo2<T extends A>(x: T) {
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var y = x;
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y = a; // error: cannot convert A to T
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y = b; // error: cannot convert B to T
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y = c; // error: cannot convert C to T
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y = <T>a;
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y = <T>b; // error: cannot convert B to T
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y = <T>c; // error: cannot convert C to T
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} |