24 lines
1.3 KiB
Plaintext
24 lines
1.3 KiB
Plaintext
tests/cases/compiler/typeParameterArgumentEquivalence2.ts(4,5): error TS2322: Type '(item: T) => boolean' is not assignable to type '(item: U) => boolean'.
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Types of parameters 'item' and 'item' are incompatible.
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Type 'T' is not assignable to type 'U'.
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tests/cases/compiler/typeParameterArgumentEquivalence2.ts(5,5): error TS2322: Type '(item: U) => boolean' is not assignable to type '(item: T) => boolean'.
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Types of parameters 'item' and 'item' are incompatible.
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Type 'U' is not assignable to type 'T'.
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==== tests/cases/compiler/typeParameterArgumentEquivalence2.ts (2 errors) ====
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function foo<T,U>() {
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var x: (item: U) => boolean;
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var y: (item: T) => boolean;
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x = y; // Should be an error
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~
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!!! error TS2322: Type '(item: T) => boolean' is not assignable to type '(item: U) => boolean'.
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!!! error TS2322: Types of parameters 'item' and 'item' are incompatible.
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!!! error TS2322: Type 'T' is not assignable to type 'U'.
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y = x; // Shound be an error
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~
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!!! error TS2322: Type '(item: U) => boolean' is not assignable to type '(item: T) => boolean'.
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!!! error TS2322: Types of parameters 'item' and 'item' are incompatible.
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!!! error TS2322: Type 'U' is not assignable to type 'T'.
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}
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