typescript: Builder Pattern

/**
 * file: CarBuilderts.ts
 * TypeScript 实体类 Model
 * Builder Pattern
 * 生成器是一种创建型设计模式， 使你能够分步骤创建复杂对象。
 * https://stackoverflow.com/questions/12827266/get-and-set-in-typescript
 * https://github.com/Microsoft/TypeScript/wiki/Coding-guidelines
 */
class UserInfo {
    id!: number;
    userName!: string;
    email!: string;
  }


  /**
   * 车辆实体类
   */
  class Car { //export

    /**
     * 序号
     */
    id!: number;
    /**
     * 座位
     */
    seats!: number;
    /**
     * 发动机
     */
    engine!: string;

   /* constructor(id, seats,engine){
        this.id = id;
        this.seats = seats;
        this.engine=engine;
    }*/

    /**
     * 序号
     * @returns  返回序号
     */
    public  getId(): number { //get
        return this.id;
    }

    /**
     * 座位数
     * @returns 返回座位数
     */
    public  getSeats(): number { //get
        return this.seats;
    }
    /**
     * 发动机
     * @returns 返回发动机型号名称
     */
    public  getEngine(): string { //get
        return this.engine;
    }
    /**
     * 设置座位数
     * @param seats 输入数字座位数
     */
    public setSeats(seats: number) //set
    {
        this.seats=seats;
    }
    /**
     * 设置发动机型号
     * @param engine 输入型号名称
     */
    public setEngine(engine: string) //set
    {
        this.engine=engine;
    }
    /**
     * 
     * @param id 
     */
    public setId(id:number)
    {
      this.id=id;
    }

}
  
/**
 * 继承
 */
class Motorcycle extends Car
{
   /*  id!: number;
    seats!: number;
    engine!: string;

   constructor(id, seats,engine){
        this.id = id;
        this.seats = seats;
        this.engine=engine;
    }

    public  getId(): number { //get
        return this.id;
    }

    public  getSeats(): number { //get
        return this.seats;
    }

    public  getEngine(): string { //get
        return this.engine;
    }

    public setSeats(seats: number) //set
    {
        this.seats=seats;
    }

    public setEngine(engine: string) //set
    {
        this.engine=engine;
    }*/

}
/*
  interface DuBuilder()
    .id(1)
    .setSeats("")
    .setEngine("")
    .build();
*/

/**
 * 接口extends Car
 */
interface CBuilder {


    /**
     * 
     * @param seats 
     */
    setSeats(seats: number): this;
    /**
     * 
     * @param engine 
     */
    setEngine(engine: string): this;

    /**
     * 
     * @param id 
     */
    setId(id:number):this;

  }
  

/**
 * 继承 Builder
 */
class CarBuilder implements CBuilder {

    /**
     * 车信息类
     */
    private car: Car;
  
    /**
     * 实例化
     */
    constructor() {
      this.car = new Car();
    }
    /**
     * 设置座位数
     * @param seats 座位号
     * @returns 返回座位号
     */
    public setSeats(seats: number): this {
      //this.car.setSeats(seats);
    
      this.car.setSeats(seats);
      return this;
    }
    /**
     * 设置发动机型号
     * @param engine 发动机型号名称
     * @returns 
     */
    public setEngine(engine: string): this {
      this.car.setEngine(engine);
      return this;
    }
    /**
     * id 序号
     * @param id 
     * @returns 
     */
    public setId(id:number):this{
      this.car.setId(id);
      return this;
    }
    /**
     * 得到实体
     * @returns 返回车信息类
     */
    public getResult(): Car {
      return this.car;
    }
  }
  

/**
 * 
 *  */ 
class MotorcycleBuilder implements CBuilder {

    /**
     * 
     */
    private motorcycle: Motorcycle;
  
    /**
     * 
     */
    constructor() {
      this.motorcycle = new Motorcycle();
    }
    /**
     * 
     * @param seats 
     * @returns 
     */
    public setSeats(seats: number): this {
      this.motorcycle.setSeats(seats);
      return this;
    }
    /**
     * 
     * @param engine 
     * @returns 
     */
    public setEngine(engine: string): this {
      this.motorcycle.setEngine(engine);
      return this;
    }
    /**
     * 
     * @param id 
     * @returns 
     */
    public  setId(id: number): this {
        this.motorcycle.setId(id);
        return this;
    }
    /**
     * 
     * @returns 
     */
    public getResult(): Motorcycle {
      return this.motorcycle;
    }
  }
 
  /**
   * 
   */
  class DuDirector {

    /**
     * 
     * @returns 
     */
    public buildFerrari(): Car {
      return new CarBuilder().setId(1).setSeats(2).setEngine("V-12").getResult();
    }
    /**
     * 
     * @returns 
     */
    public buildToyota(): Car {
      return new CarBuilder().setId(2).setSeats(7).setEngine("V-6").getResult();
    }
    /**
     * 
     * @returns 
     */
    public buildHonda(): Motorcycle {
      return new MotorcycleBuilder().setId(3).setSeats(2).setEngine("V-4").getResult();
    }
    /**
     * 
     * @returns 
     */
    public buildYamaha(): Motorcycle {
      return new MotorcycleBuilder().setId(4).setSeats(1).setEngine("V-2").getResult();
    }
  }


/**
 * 
 */

const directorBu = new DuDirector();

directorBu.buildFerrari();
directorBu.buildToyota();

directorBu.buildHonda();
directorBu.buildYamaha();

const car = new CarBuilder().setSeats(2).setEngine("V-12").getResult();

const motorcycle = new MotorcycleBuilder()
  .setId(100)
  .setSeats(2)
  .setEngine("V-4")
  .getResult();

let pucarid=""+motorcycle.getId();
let pucar1=""+motorcycle.getSeats();
let pucar2=""+motorcycle.getEngine();

let messageCar: string = 'Hello World,This is a typescript!,涂聚文 Geovin Du Web';
document.body.innerHTML = messageCar+"
,id:"+pucarid+",座位数："+pucar1+",发动机型号："+pucar2+","+car.getSeats()+","+car.getEngine()+","+directorBu.buildFerrari().getEngine()+",TypeScript 生成器方法模式";
console.log(motorcycle.getId());
console.log(motorcycle.getSeats());
console.log(motorcycle.getEngine());

调用:

输出：

“The best strategy in life is diligence."         --Chinese Proverb