// t2-1.ts enum Transportations { motorcycle, car, truck } abstract class T { abstract type: Transportations; abstract run(): void; } class T1 extends T { type = Transportations.motorcycle as const; constructor(public make: number) { super(); } run() { console.log(`Running motorcycle with make ${this.make}`); } } class T2 extends T { type = Transportations.car as const; constructor( public transmission: string, public pow: number, public id = 'T2' as const ) { super(); } run() { console.log(`Running car with transmission ${this.transmission} and power ${this.pow}`); } } class T3 extends T { type = Transportations.truck as const; constructor(public capacity: number) { super(); } run() { console.log(`Running truck with capacity ${this.capacity}`); } } type Transporter = T; class MyController { run(x: Transporter) { x.run(); } } // CASE1：使用一个平台（单例）来为所有的transporter提供服务 class Platform { static transporters = new Array<Transporter>(); static controller = new MyController(); static runAll() { this.transporters.forEach((transporter) => { this.controller.run(transporter); }); } } // CASE2：平台将为每一个transporter配备一个独立的控制器 class Platform2 extends Array<[MyController, Transporter]> { runAll() { this.forEach(([controller, transporter]) => { controller.run(transporter); }); } } // let x1 = new T1(2021); // let x2 = new T2('Automatic', 150, 'T2'); // let x3 = new T3(1000); // Platform.transporters.push(x1, x2, x3); // Platform.runAll(); export { T1, T2, T3, Transportations };