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tests/cases/conformance/types/typeRelationships/typeInference/genericCallWithObjectTypeArgsAndConstraints5.ts(18,17): error TS2345: Argument of type 'C' is not assignable to parameter of type 'D'.
Property 'y' is missing in type 'C' but required in type 'D'.
tests/cases/conformance/types/typeRelationships/typeInference/genericCallWithObjectTypeArgsAndConstraints5.ts(19,23): error TS2345: Argument of type '() => void' is not assignable to parameter of type '() => number'.
Type 'void' is not assignable to type 'number'.
tests/cases/conformance/types/typeRelationships/typeInference/genericCallWithObjectTypeArgsAndConstraints5.ts(22,24): error TS2345: Argument of type 'C' is not assignable to parameter of type 'T'.
'T' could be instantiated with an arbitrary type which could be unrelated to 'C'.
==== tests/cases/conformance/types/typeRelationships/typeInference/genericCallWithObjectTypeArgsAndConstraints5.ts (3 errors) ====
// Generic call with constraints infering type parameter from object member properties
class C {
x: string;
}
class D {
x: string;
y: string;
}
function foo<T, U extends T>(t: T, t2: U) {
return (x: T) => t2;
}
var c: C;
var d: D;
var r2 = foo(d, c); // the constraints are self-referencing, no downstream error
~
!!! error TS2345: Argument of type 'C' is not assignable to parameter of type 'D'.
!!! error TS2345: Property 'y' is missing in type 'C' but required in type 'D'.
!!! related TS2728 tests/cases/conformance/types/typeRelationships/typeInference/genericCallWithObjectTypeArgsAndConstraints5.ts:9:5: 'y' is declared here.
var r9 = foo(() => 1, () => { }); // the constraints are self-referencing, no downstream error
~~~~~~~~~
!!! error TS2345: Argument of type '() => void' is not assignable to parameter of type '() => number'.
!!! error TS2345: Type 'void' is not assignable to type 'number'.
function other<T, U extends T>() {
var r5 = foo<T, U>(c, d); // error
~
!!! error TS2345: Argument of type 'C' is not assignable to parameter of type 'T'.
!!! error TS2345: 'T' could be instantiated with an arbitrary type which could be unrelated to 'C'.
}
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