44 lines
1.1 KiB
TypeScript
44 lines
1.1 KiB
TypeScript
//// [genericTypeAssertions2.ts]
|
|
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
|
|
|
|
//// [genericTypeAssertions2.js]
|
|
var __extends = (this && this.__extends) || function (d, b) {
|
|
for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
|
|
function __() { this.constructor = d; }
|
|
__.prototype = b.prototype;
|
|
d.prototype = new __();
|
|
};
|
|
var A = (function () {
|
|
function A() {
|
|
}
|
|
A.prototype.foo = function (x) { };
|
|
return A;
|
|
})();
|
|
var B = (function (_super) {
|
|
__extends(B, _super);
|
|
function B() {
|
|
_super.apply(this, arguments);
|
|
}
|
|
B.prototype.bar = function () {
|
|
return null;
|
|
};
|
|
return B;
|
|
})(A);
|
|
var foo = new A();
|
|
var r = new B();
|
|
var r2 = new B(); // error
|
|
var r3 = new B(); // error
|
|
var r4 = new A();
|
|
var r5 = []; // error
|