如何从JavaScript到TypeScript？

const enum Directions {

Up,

Down,

Left,

Right

}

let directions = [Directions.Up, Directions.Down, Directions.Left, Directions.Right];

// 结果是 0 1 2 3

interface check {

name: string;

age: number;

hobby: Array<number>

fuck: number[]   //这两种写法是一样的

}

class exp implements check {

name: string

age: number

hobby:Array<number>

fuck: number[]

constructor(name, age, hobby, fuck) {

    this.name = name;

    this.age = age;

    this.hobby = hobby;

    this.fuck = fuck;

}

}

let app = new exp('hello', 18, [1, 2, 3], [2, 3, 4])

var exp = /* @class / (function () {

function exp(name, age, hobby, fuck) {

    this.name = name;

    this.age = age;

    this.hobby = hobby;

    this.fuck = fuck;

}

return exp;

}());

var app = new exp('hello', 18, [1, 2, 3], [2, 3, 4]);