//// [classSideInheritance3.ts] class A { constructor(public x: string) { } } class B extends A { constructor(x: string, public data: string) { super(x); } } class C extends A { constructor(x: string) { super(x); } } var r1: typeof A = B; // error var r2: new (x: string) => A = B; // error var r3: typeof A = C; // ok //// [classSideInheritance3.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; } d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); }; var A = (function () { function A(x) { this.x = x; } return A; })(); var B = (function (_super) { __extends(B, _super); function B(x, data) { _super.call(this, x); this.data = data; } return B; })(A); var C = (function (_super) { __extends(C, _super); function C(x) { _super.call(this, x); } return C; })(A); var r1 = B; // error var r2 = B; // error var r3 = C; // ok