I am learning about classes in Typescript and extend. Once I compiled .ts file and looked into .js. The code for class and extend in js is quite different. In .js class is made with function not with class.
My TS code
class User4 { private city: string = "xyx"; protected number: number = 123123; constructor(public name: string) {} } class additional extends User4 { method1() { console.log(this.number); } } export {}; While the code in **.js ** is
"use strict"; 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 __()); }; })(); exports.__esModule = true; var User4 = /** @class */ (function () { function User4(name) { this.name = name; this.city = "xyx"; this.number = 123123; } return User4; }()); var additional = /** @class */ (function (_super) { __extends(additional, _super); function additional() { return _super !== null && _super.apply(this, arguments) || this; } additional.prototype.method1 = function () { console.log(this.number); }; return additional; }(User4)); I am wondering, if there is any issue with my system or its something else because the code in .js file is really crazy
classkeyword