90 lines
2.5 KiB
TypeScript
90 lines
2.5 KiB
TypeScript
//// [genericCallWithObjectTypeArgsAndConstraints2.ts]
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// Generic call with constraints infering type parameter from object member properties
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// No errors expected
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class Base {
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x: string;
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}
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class Derived extends Base {
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y: string;
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}
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function f<T extends Base>(x: { foo: T; bar: T }) {
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var r: T;
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return r;
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}
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var r = f({ foo: new Base(), bar: new Derived() });
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var r2 = f({ foo: new Derived(), bar: new Derived() });
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interface I<T> {
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a: T;
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}
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function f2<T extends Base>(x: I<T>) {
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var r: T;
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return r;
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}
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var i: I<Derived>;
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var r3 = f2(i);
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function f3<T extends Base>(x: T, y: (a: T) => T) {
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return y(null);
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}
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var r4 = f3(new Base(), x => x);
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var r5 = f3(new Derived(), x => x);
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var r6 = f3(null, null); // any
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var r7 = f3(null, x => x); // any
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//// [genericCallWithObjectTypeArgsAndConstraints2.js]
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// Generic call with constraints infering type parameter from object member properties
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// No errors expected
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
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return extendStatics(d, b);
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};
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return function (d, b) {
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if (typeof b !== "function" && b !== null)
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throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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var Base = /** @class */ (function () {
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function Base() {
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}
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return Base;
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}());
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var Derived = /** @class */ (function (_super) {
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__extends(Derived, _super);
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function Derived() {
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return _super !== null && _super.apply(this, arguments) || this;
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}
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return Derived;
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}(Base));
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function f(x) {
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var r;
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return r;
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}
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var r = f({ foo: new Base(), bar: new Derived() });
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var r2 = f({ foo: new Derived(), bar: new Derived() });
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function f2(x) {
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var r;
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return r;
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}
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var i;
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var r3 = f2(i);
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function f3(x, y) {
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return y(null);
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}
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var r4 = f3(new Base(), function (x) { return x; });
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var r5 = f3(new Derived(), function (x) { return x; });
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var r6 = f3(null, null); // any
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var r7 = f3(null, function (x) { return x; }); // any
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