//// [recursiveBaseCheck3.ts] class A extends C { } class C extends A { } (new C).blah; //// [recursiveBaseCheck3.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 (_super) { __extends(A, _super); function A() { _super.apply(this, arguments); } return A; })(C); var C = (function (_super) { __extends(C, _super); function C() { _super.apply(this, arguments); } return C; })(A); (new C).blah;