63 lines
2.1 KiB
Plaintext
63 lines
2.1 KiB
Plaintext
==== tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithConstructSignaturesWithOptionalParameters.ts (5 errors) ====
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// call signatures in derived types must have the same or fewer optional parameters as the base type
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interface Base {
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a: new () => number;
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a2: new (x?: number) => number;
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a3: new (x: number) => number;
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a4: new (x: number, y?: number) => number;
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a5: new (x?: number, y?: number) => number;
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a6: new (x: number, y: number) => number;
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}
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var b: Base;
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var a: new () => number;
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a = b.a; // ok
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a = b.a2; // ok
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a = b.a3; // error
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~
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!!! Type 'new (x: number) => number' is not assignable to type 'new () => number'.
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a = b.a4; // error
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~
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!!! Type 'new (x: number, y?: number) => number' is not assignable to type 'new () => number'.
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a = b.a5; // ok
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a = b.a6; // error
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~
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!!! Type 'new (x: number, y: number) => number' is not assignable to type 'new () => number'.
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var a2: new (x?: number) => number;
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a2 = b.a; // ok
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a2 = b.a2; // ok
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a2 = b.a3; // ok
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a2 = b.a4; // ok
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a2 = b.a5; // ok
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a2 = b.a6; // error
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~~
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!!! Type 'new (x: number, y: number) => number' is not assignable to type 'new (x?: number) => number'.
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var a3: new (x: number) => number;
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a3 = b.a; // ok
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a3 = b.a2; // ok
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a3 = b.a3; // ok
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a3 = b.a4; // ok
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a3 = b.a5; // ok
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a3 = b.a6; // error
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~~
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!!! Type 'new (x: number, y: number) => number' is not assignable to type 'new (x: number) => number'.
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var a4: new (x: number, y?: number) => number;
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a4 = b.a; // ok
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a4 = b.a2; // ok
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a4 = b.a3; // ok
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a4 = b.a4; // ok
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a4 = b.a5; // ok
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a4 = b.a6; // ok
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var a5: new (x?: number, y?: number) => number;
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a5 = b.a; // ok
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a5 = b.a2; // ok
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a5 = b.a3; // ok
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a5 = b.a4; // ok
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a5 = b.a5; // ok
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a5 = b.a6; // ok
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