30 lines
1.3 KiB
Plaintext
30 lines
1.3 KiB
Plaintext
==== tests/cases/conformance/types/typeRelationships/typeInference/genericCallWithConstructorTypedArguments5.ts (2 errors) ====
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// Generic call with parameter of object type with member of function type of n args passed object whose associated member is call signature with n+1 args
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function foo<T, U>(arg: { cb: new(t: T) => U }) {
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return new arg.cb(null);
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}
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var arg: { cb: new<T>(x: T) => string };
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var r = foo(arg); // {}
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// more args not allowed
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var arg2: { cb: new <T>(x: T, y: T) => string };
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var r2 = foo(arg2); // error
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~~~~
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!!! Argument of type '{ cb: new <T>(x: T, y: T) => string; }' is not assignable to parameter of type '{ cb: new (t: any) => string; }'.
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var arg3: { cb: new (x: string, y: number) => string };
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var r3 = foo(arg3); // error
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~~~~
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!!! Argument of type '{ cb: new (x: string, y: number) => string; }' is not assignable to parameter of type '{ cb: new (t: string) => string; }'.
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function foo2<T, U>(arg: { cb: new(t: T, t2: T) => U }) {
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return new arg.cb(null, null);
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}
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// fewer args ok
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var r4 = foo(arg); // {}
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var arg4: { cb: new (x: string) => string };
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var r6 = foo(arg4); // string
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var arg5: { cb: new () => string };
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var r7 = foo(arg5); // string
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