29 lines
1.5 KiB
Plaintext
29 lines
1.5 KiB
Plaintext
tests/cases/compiler/defaultBestCommonTypesHaveDecls.ts(2,6): error TS2339: Property 'length' does not exist on type '{}'.
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tests/cases/compiler/defaultBestCommonTypesHaveDecls.ts(5,6): error TS2339: Property 'length' does not exist on type 'Object'.
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tests/cases/compiler/defaultBestCommonTypesHaveDecls.ts(8,14): 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 'number' is not a valid type argument because it is not a supertype of candidate 'string'.
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==== tests/cases/compiler/defaultBestCommonTypesHaveDecls.ts (3 errors) ====
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var obj1: {};
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obj1.length;
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~~~~~~
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!!! error TS2339: Property 'length' does not exist on type '{}'.
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var obj2: Object;
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obj2.length;
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~~~~~~
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!!! error TS2339: Property 'length' does not exist on type 'Object'.
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function concat<T>(x: T, y: T): T { return null; }
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var result = concat(1, ""); // 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 'number' is not a valid type argument because it is not a supertype of candidate 'string'.
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var elementCount = result.length;
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function concat2<T, U>(x: T, y: U) { return null; }
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var result2 = concat2(1, ""); // result2 will be number|string
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var elementCount2 = result.length;
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