//// [recursiveBaseCheck3.ts] class A extends C { } class C extends A { } (new C).blah; //// [recursiveBaseCheck3.js] var __extends = this.__extends || function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; function __() { this.constructor = d; } __.prototype = b.prototype; d.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;