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tests/cases/compiler/extendAndImplementTheSameBaseType2.ts(7,7): error TS2720: Class 'D' incorrectly implements class 'C<number>'. Did you mean to extend 'C<number>' and inherit its members as a subclass?
The types returned by 'bar()' are incompatible between these types.
Type 'string' is not assignable to type 'number'.
tests/cases/compiler/extendAndImplementTheSameBaseType2.ts(12,5): error TS2322: Type 'number' is not assignable to type 'string'.
tests/cases/compiler/extendAndImplementTheSameBaseType2.ts(16,5): error TS2322: Type 'string' is not assignable to type 'number'.
==== tests/cases/compiler/extendAndImplementTheSameBaseType2.ts (3 errors) ====
class C<T> {
foo: number
bar(): T {
return null;
}
}
class D extends C<string> implements C<number> {
~
!!! error TS2720: Class 'D' incorrectly implements class 'C<number>'. Did you mean to extend 'C<number>' and inherit its members as a subclass?
!!! error TS2720: The types returned by 'bar()' are incompatible between these types.
!!! error TS2720: Type 'string' is not assignable to type 'number'.
baz() { }
}
var d: D = new D();
var r: string = d.foo;
~
!!! error TS2322: Type 'number' is not assignable to type 'string'.
var r2: number = d.foo;
var r3: string = d.bar();
var r4: number = d.bar();
~~
!!! error TS2322: Type 'string' is not assignable to type 'number'.
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