Answer 1

强烈建议大佬把博客文章整理一下搞个类似阮一峰老师的ES6微信小程序

Answer 2

可以，interface 能够描述 JavaScript 对象的任何形式，包括函数

// 函数类型
interface SearchFunc {
  (source: string, subString: string): boolean;
}
let mySearch: SearchFunc;
mySearch = function(source: string, subString: string) {
  let result = source.search(subString);
  return result > -1;
}

// Array
interface StringArray {
  [index: number]: string;
}

let myArray: StringArray;
myArray = ["Bob", "Fred"];

// Class, constructor存在于类的静态部分，所以不会检查
interface ClockInterface {
    currentTime: Date;
    setTime(d: Date);
}

class Clock implements ClockInterface {
    currentTime: Date;
    setTime(d: Date) {
        this.currentTime = d;
    }
    constructor(h: number, m: number) { }
}