20 lines
1.2 KiB
Plaintext
20 lines
1.2 KiB
Plaintext
tests/cases/compiler/typeArgInference2.ts(12,10): error TS2453: The type argument for type parameter 'T' cannot be inferred from the usage. Consider specifying the type arguments explicitly.
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Type argument candidate '{ name: string; a: number; }' is not a valid type argument because it is not a supertype of candidate '{ name: string; b: number; }'.
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==== tests/cases/compiler/typeArgInference2.ts (1 errors) ====
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interface Item {
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name: string;
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}
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declare function foo<T extends Item>(x?: T, y?: T): T;
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var z1 = foo(null); // any
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var z2 = foo(); // Item
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var z3 = foo({ name: null }); // { name: any }
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var z4 = foo({ name: "abc" }); // { name: string }
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var z5 = foo({ name: "abc", a: 5 }); // { name: string; a: number }
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var z6 = foo({ name: "abc", a: 5 }, { name: "def", b: 5 }); // error
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~~~
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!!! error TS2453: The type argument for type parameter 'T' cannot be inferred from the usage. Consider specifying the type arguments explicitly.
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!!! error TS2453: Type argument candidate '{ name: string; a: number; }' is not a valid type argument because it is not a supertype of candidate '{ name: string; b: number; }'. |