tests/cases/conformance/types/typeRelationships/assignmentCompatibility/genericCallWithObjectTypeArgsAndInitializers.ts(5,33): error TS2322: Type 'number' is not assignable to type 'T'.
  'number' is assignable to the constraint of type 'T', but 'T' could be instantiated with a different subtype of constraint 'Number'.
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/genericCallWithObjectTypeArgsAndInitializers.ts(6,37): error TS2322: Type 'T' is not assignable to type 'U'.
  'U' could be instantiated with an arbitrary type which could be unrelated to 'T'.
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/genericCallWithObjectTypeArgsAndInitializers.ts(8,56): error TS2322: Type 'U' is not assignable to type 'V'.
  'V' could be instantiated with an arbitrary type which could be unrelated to 'U'.
    Type 'T' is not assignable to type 'V'.
      'V' could be instantiated with an arbitrary type which could be unrelated to 'T'.


==== tests/cases/conformance/types/typeRelationships/assignmentCompatibility/genericCallWithObjectTypeArgsAndInitializers.ts (3 errors) ====
    // Generic typed parameters with initializers
    
    function foo<T>(x: T = null) { return x; } // ok
    function foo2<T>(x: T = undefined) { return x; } // ok
    function foo3<T extends Number>(x: T = 1) { } // error
                                    ~~~~~~~~
!!! error TS2322: Type 'number' is not assignable to type 'T'.
!!! error TS2322:   'number' is assignable to the constraint of type 'T', but 'T' could be instantiated with a different subtype of constraint 'Number'.
    function foo4<T, U extends T>(x: T, y: U = x) { } // error
                                        ~~~~~~~~
!!! error TS2322: Type 'T' is not assignable to type 'U'.
!!! error TS2322:   'U' could be instantiated with an arbitrary type which could be unrelated to 'T'.
    function foo5<T, U extends T>(x: U, y: T = x) { } // ok
    function foo6<T, U extends T, V extends U>(x: T, y: U, z: V = y) { } // error
                                                           ~~~~~~~~
!!! error TS2322: Type 'U' is not assignable to type 'V'.
!!! error TS2322:   'V' could be instantiated with an arbitrary type which could be unrelated to 'U'.
!!! error TS2322:     Type 'T' is not assignable to type 'V'.
!!! error TS2322:       'V' could be instantiated with an arbitrary type which could be unrelated to 'T'.
    function foo7<T, U extends T, V extends U>(x: V, y: U = x) { } // should be ok