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tests/cases/compiler/typeParameterAssignmentCompat1.ts(8,5): error TS2322: Type 'Foo<U>' is not assignable to type 'Foo<T>'.
Type 'U' is not assignable to type 'T'.
tests/cases/compiler/typeParameterAssignmentCompat1.ts(9,12): error TS2322: Type 'Foo<T>' is not assignable to type 'Foo<U>'.
Type 'T' is not assignable to type 'U'.
tests/cases/compiler/typeParameterAssignmentCompat1.ts(16,9): error TS2322: Type 'Foo<U>' is not assignable to type 'Foo<T>'.
Type 'U' is not assignable to type 'T'.
tests/cases/compiler/typeParameterAssignmentCompat1.ts(17,16): error TS2322: Type 'Foo<T>' is not assignable to type 'Foo<U>'.
Type 'T' is not assignable to type 'U'.
==== tests/cases/compiler/typeParameterAssignmentCompat1.ts (4 errors) ====
interface Foo<T> {
frobble(value: T): T;
}
function f<T, U>(): Foo<U> {
var x: Foo<T>;
var y: Foo<U>;
x = y; // should be an error
~
!!! error TS2322: Type 'Foo<U>' is not assignable to type 'Foo<T>'.
!!! error TS2322: Type 'U' is not assignable to type 'T'.
return x;
~
!!! error TS2322: Type 'Foo<T>' is not assignable to type 'Foo<U>'.
!!! error TS2322: Type 'T' is not assignable to type 'U'.
}
class C<T> {
f<U>(): Foo<U> {
var x: Foo<T>;
var y: Foo<U>;
x = y; // should be an error
~
!!! error TS2322: Type 'Foo<U>' is not assignable to type 'Foo<T>'.
!!! error TS2322: Type 'U' is not assignable to type 'T'.
return x;
~
!!! error TS2322: Type 'Foo<T>' is not assignable to type 'Foo<U>'.
!!! error TS2322: Type 'T' is not assignable to type 'U'.
}
}
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