//// [generics4.ts]
class C<T> { private x: T; }
interface X { f(): string; }
interface Y { f(): boolean; }
var a: C<X>;
var b: C<Y>;

a = b; // Not ok - return types of "f" are different

//// [generics4.js]
var C = (function () {
    function C() {
    }
    return C;
})();
var a;
var b;
a = b;