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typeParametersShouldNotBeEqual2.ts(4,5): error TS2322: Type 'U' is not assignable to type 'T'.
'U' is assignable to the constraint of type 'T', but 'T' could be instantiated with a different subtype of constraint 'Date'.
typeParametersShouldNotBeEqual2.ts(5,5): error TS2322: Type 'V' is not assignable to type 'T'.
'T' could be instantiated with an arbitrary type which could be unrelated to 'V'.
typeParametersShouldNotBeEqual2.ts(6,5): error TS2322: Type 'T' is not assignable to type 'V'.
'V' could be instantiated with an arbitrary type which could be unrelated to 'T'.
typeParametersShouldNotBeEqual2.ts(7,5): error TS2322: Type 'V' is not assignable to type 'U'.
'U' could be instantiated with an arbitrary type which could be unrelated to 'V'.
typeParametersShouldNotBeEqual2.ts(8,5): error TS2322: Type 'U' is not assignable to type 'V'.
'V' could be instantiated with an arbitrary type which could be unrelated to 'U'.
typeParametersShouldNotBeEqual2.ts(9,5): error TS2322: Type 'Object' is not assignable to type 'T'.
'T' could be instantiated with an arbitrary type which could be unrelated to 'Object'.
==== typeParametersShouldNotBeEqual2.ts (6 errors) ====
function ff<T extends Date, U extends Date, V>(x: T, y: U, z: V) {
var zz: Object;
x = x; // Ok
x = y; // Ok
~
!!! error TS2322: Type 'U' is not assignable to type 'T'.
!!! error TS2322: 'U' is assignable to the constraint of type 'T', but 'T' could be instantiated with a different subtype of constraint 'Date'.
x = z; // Error
~
!!! error TS2322: Type 'V' is not assignable to type 'T'.
!!! error TS2322: 'T' could be instantiated with an arbitrary type which could be unrelated to 'V'.
!!! related TS2208 typeParametersShouldNotBeEqual2.ts:1:45: This type parameter might need an `extends T` constraint.
z = x; // Error
~
!!! 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'.
y = z; // Error
~
!!! error TS2322: Type 'V' is not assignable to type 'U'.
!!! error TS2322: 'U' could be instantiated with an arbitrary type which could be unrelated to 'V'.
!!! related TS2208 typeParametersShouldNotBeEqual2.ts:1:45: This type parameter might need an `extends U` constraint.
z = 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'.
x = zz; // Error
~
!!! error TS2322: Type 'Object' is not assignable to type 'T'.
!!! error TS2322: 'T' could be instantiated with an arbitrary type which could be unrelated to 'Object'.
zz = x; // Ok
}
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