//// [missingPropertiesOfClassExpression.ts] class George extends class { reset() { return this.y; } } { constructor() { super(); } } //// [missingPropertiesOfClassExpression.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 George = (function (_super) { __extends(George, _super); function George() { _super.call(this); } return George; })((function () { function class_1() { } class_1.prototype.reset = function () { return this.y; }; return class_1; })());