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==== tests/cases/conformance/types/typeRelationships/typeInference/genericCallWithConstructorTypedArguments5.ts (2 errors) ====
// 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
function foo<T, U>(arg: { cb: new(t: T) => U }) {
return new arg.cb(null);
}
var arg: { cb: new<T>(x: T) => string };
var r = foo(arg); // {}
// more args not allowed
var arg2: { cb: new <T>(x: T, y: T) => string };
var r2 = foo(arg2); // error
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~~~~
!!! Argument type '{ cb: new <T>(x: T, y: T) => string; }' is not assignable to parameter type '{ cb: new (t: any) => string; }'.
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var arg3: { cb: new (x: string, y: number) => string };
var r3 = foo(arg3); // error
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~~~~
!!! Argument type '{ cb: new (x: string, y: number) => string; }' is not assignable to parameter type '{ cb: new (t: string) => string; }'.
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function foo2<T, U>(arg: { cb: new(t: T, t2: T) => U }) {
return new arg.cb(null, null);
}
// fewer args ok
var r4 = foo(arg); // {}
var arg4: { cb: new (x: string) => string };
var r6 = foo(arg4); // string
var arg5: { cb: new () => string };
var r7 = foo(arg5); // string