80 lines
1.9 KiB
TypeScript
80 lines
1.9 KiB
TypeScript
//// [genericCallWithObjectTypeArgsAndConstraints2.ts]
|
|
// Generic call with constraints infering type parameter from object member properties
|
|
// No errors expected
|
|
|
|
class Base {
|
|
x: string;
|
|
}
|
|
class Derived extends Base {
|
|
y: string;
|
|
}
|
|
|
|
function f<T extends Base>(x: { foo: T; bar: T }) {
|
|
var r: T;
|
|
return r;
|
|
}
|
|
var r = f({ foo: new Base(), bar: new Derived() });
|
|
var r2 = f({ foo: new Derived(), bar: new Derived() });
|
|
|
|
|
|
interface I<T> {
|
|
a: T;
|
|
}
|
|
function f2<T extends Base>(x: I<T>) {
|
|
var r: T;
|
|
return r;
|
|
}
|
|
var i: I<Derived>;
|
|
var r3 = f2(i);
|
|
|
|
|
|
function f3<T extends Base>(x: T, y: (a: T) => T) {
|
|
return y(null);
|
|
}
|
|
var r4 = f3(new Base(), x => x);
|
|
var r5 = f3(new Derived(), x => x);
|
|
|
|
var r6 = f3(null, null); // any
|
|
var r7 = f3(null, x => x); // any
|
|
|
|
|
|
//// [genericCallWithObjectTypeArgsAndConstraints2.js]
|
|
// Generic call with constraints infering type parameter from object member properties
|
|
// No errors expected
|
|
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; }
|
|
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
|
|
};
|
|
var Base = (function () {
|
|
function Base() {
|
|
}
|
|
return Base;
|
|
})();
|
|
var Derived = (function (_super) {
|
|
__extends(Derived, _super);
|
|
function Derived() {
|
|
_super.apply(this, arguments);
|
|
}
|
|
return Derived;
|
|
})(Base);
|
|
function f(x) {
|
|
var r;
|
|
return r;
|
|
}
|
|
var r = f({ foo: new Base(), bar: new Derived() });
|
|
var r2 = f({ foo: new Derived(), bar: new Derived() });
|
|
function f2(x) {
|
|
var r;
|
|
return r;
|
|
}
|
|
var i;
|
|
var r3 = f2(i);
|
|
function f3(x, y) {
|
|
return y(null);
|
|
}
|
|
var r4 = f3(new Base(), function (x) { return x; });
|
|
var r5 = f3(new Derived(), function (x) { return x; });
|
|
var r6 = f3(null, null); // any
|
|
var r7 = f3(null, function (x) { return x; }); // any
|