22 lines
1 KiB
Plaintext
22 lines
1 KiB
Plaintext
tests/cases/compiler/typeParameterOrderReversal.ts(6,17): error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.
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tests/cases/compiler/typeParameterOrderReversal.ts(7,20): error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.
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==== tests/cases/compiler/typeParameterOrderReversal.ts (2 errors) ====
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interface X<T> {
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n: T;
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}
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// Only difference here is order of type parameters
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function uFirst<U extends X<T>, T>(x: U) { }
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~~~~~~~~~~~~~~
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!!! error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.
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function tFirst<T, U extends X<T>>(x: U) { }
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~~~~~~~~~~~~~~
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!!! error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.
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var z: X<number> = null;
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// Both of these should be allowed
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uFirst(z);
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tFirst(z);
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