38 lines
1.6 KiB
Plaintext
38 lines
1.6 KiB
Plaintext
==== tests/cases/compiler/overloadresolutionWithConstraintCheckingDeferred.ts (6 errors) ====
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interface A { x }
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interface B { x; y }
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interface C { z }
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interface D { q }
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class G<T extends A> {
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constructor(x: T) { }
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}
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declare function foo(arg: (x: D) => number): string;
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declare function foo(arg: (x: C) => any): string;
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declare function foo(arg: (x: B) => any): number;
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var result: number = foo(x => new G(x)); // No error, returns number
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~~~~~~
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!!! Type 'string' is not assignable to type 'number'.
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~
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!!! Argument of type 'D' is not assignable to parameter of type 'A'.
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var result2: number = foo(x => new G<typeof x>(x)); // No error, returns number
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~~~~~~~~~~~~~~~~~~~~~~~
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!!! Argument of type '(x: D) => G<D>' is not assignable to parameter of type '(x: B) => any'.
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~~~~~~~~
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!!! Type 'D' does not satisfy the constraint 'A'.
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var result3: string = foo(x => { // returns string because the C overload is picked
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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var y: G<typeof x>; // error that C does not satisfy constraint
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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~~~~~~~~~~~
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!!! Type 'D' does not satisfy the constraint 'A'.
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return y;
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~~~~~~~~~~~~~
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});
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~
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!!! Argument of type '(x: D) => G<D>' is not assignable to parameter of type '(x: B) => any'.
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