VSCode运行TypeScript

1.文档
https://www.tslang.cn/docs/handbook/advanced-types.html
http://ts.xcatliu.com/

2.步骤
全局安装ts-node包
javascript npm install typescript ts-node @types/node@* -g

直接运行自己的ts文件  tsc index.ts

然后可能会报错

可能是vscode策略受限制，那么以管理员身份重新打开vscode，到控制台依次输入：

get-ExecutionPolicy       显示restricted：表示是受限制的
set-ExecutionPolicy RemoteSigned
get-ExecutionPolicy        显示RemoteSigned

解决完报错之后，回到这一步，控制台输入

tsc index.ts

会在当前文件夹生成相应js文件，这个时候可以通过node greeter.js 运行这个文件
或者在vscode上安装Code Runner插件，直接找到生成的js，右键选择 run code运行。

3.策略模式的一个例子

类图

文件目录结构

//duck.ts
import IFlyBehavior from './IFlyBehavior'
import IQuackBehavior from  './IQuackBehavior'
  abstract class Duck{
    
    
    protected flyBehavior:IFlyBehavior;
    protected quackBehavior:IQuackBehavior;
    public Swim() :string{
    
    
      return '所有鸭子都可以游泳！'
    }
    public performQuack():string {
    
    
      return this.quackBehavior.Quack()
    }
    public performFly():string {
    
    
      return this.flyBehavior.Fly()
    }
    public setQuackBehavior(qck :IQuackBehavior) {
    
    
      this.quackBehavior = qck
    }
    public setFlyBehavior(fly:IFlyBehavior) {
    
    
      this.flyBehavior = fly
    }
    public abstract Display()
  }
  export default Duck;


//redheadDuck.ts
import Duck from './duck'
import FlyWithWings from './FlyWithWings'
import Quack1 from './Quack1'
class RedheadDuck extends Duck{
    
    
  constructor() {
    
    
    super()
    super.setQuackBehavior(new Quack1())
    super.setFlyBehavior(new FlyWithWings())
  }
  public Display():string {
    
    
      return '我是一只红头鸭'
  }
}
export default RedheadDuck


//IQuackBehavior.ts
interface IQuackBehavior
	{
    
    
		 Quack():string;
	}
export default IQuackBehavior


//IFlyBehavior.ts
interface IFlyBehavior
	{
    
    
		 Fly():string;
	}
export default IFlyBehavior


//FlyWithWings.ts
import IFlyBehavior from './IFlyBehavior'
class FlyWithWings implements IFlyBehavior{
    
    
  public FlyWithWings() {
    
    }
  public Fly():string {
    
    
    return '我飞啦';
  }
}
export default FlyWithWings

//Quack1.ts
import IQuackBehavior from  './IQuackBehavior'
class Quack1 implements IQuackBehavior{
    
    
  public Quack():string {
    
    
    return '呷呷';
  }
}
export default Quack1



//index.ts
import RedheadDuck from "./redheadDuck";
class Program {
    
    
  public static Main(args:string[]):void{
    
    
    let redheadDuck:RedheadDuck = new RedheadDuck()
    console.log(redheadDuck.Display() + '#' + redheadDuck.Swim() + '#' + redheadDuck.performFly() + '#' + redheadDuck.performQuack());
  }
}
Program.Main([])

输出：