//// [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 () { var extendStatics = function (d, b) { extendStatics = Object.setPrototypeOf || ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) || function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; }; return extendStatics(d, b); }; return function (d, b) { if (typeof b !== "function" && b !== null) throw new TypeError("Class extends value " + String(b) + " is not a constructor or null"); extendStatics(d, b); function __() { this.constructor = d; } d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); }; })(); var A = /** @class */ (function () { function A(x) { this.x = x; } return A; }()); var B = /** @class */ (function (_super) { __extends(B, _super); function B(x, data) { var _this = _super.call(this, x) || this; _this.data = data; return _this; } return B; }(A)); var C = /** @class */ (function (_super) { __extends(C, _super); function C(x) { return _super.call(this, x) || this; } return C; }(A)); var r1 = B; // error var r2 = B; // error var r3 = C; // ok