TypeScript/tests/cases/compiler/genericTypeAssertions2.ts

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2014-07-13 01:04:16 +02:00
class A<T> { foo(x: T) { } }
class B<T> extends A<T> {
bar(): T {
return null;
}
}
var foo = new A<number>();
var r: A<string> = <B<string>>new B();
var r2: A<number> = <B<string>>new B(); // error
var r3: B<number> = <A<number>>new B(); // error
var r4: A<number> = <A<number>>new A();
var r5: A<number> = <A<number>>[]; // error