22 lines
608 B
TypeScript
22 lines
608 B
TypeScript
interface A { a: string; }
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interface B extends A { b: string; }
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interface C extends B { c: string; }
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interface G<T, U extends B> {
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x: T;
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y: U;
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}
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var v1: {
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x: { a: string; }
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y: { a: string; b: string; c: string };
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}; // Ok
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var v2: G<{ a: string }, C>; // Ok, equivalent to G<A, C>
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var v3: G<A, A>; // Error, A not valid argument for U
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var v4: G<G<A, B>, C>; // Ok
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var v5: G<any, any>; // Error, any does not satisfy constraint B
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var v6: G<any>; // Error, wrong number of arguments
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var v7: G; // Error, no type arguments
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