//// [inheritanceMemberPropertyOverridingMethod.ts] class a { x() { return "20"; } } class b extends a { x: () => string; } //// [inheritanceMemberPropertyOverridingMethod.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; } __.prototype = b.prototype; d.prototype = new __(); }; var a = (function () { function a() { } a.prototype.x = function () { return "20"; }; return a; })(); var b = (function (_super) { __extends(b, _super); function b() { _super.apply(this, arguments); } return b; })(a);