ES6多继承

• 被继承类1

const BaseClass = (superClass = null) => {
  superClass = superClass || class Empty {}
  return class extends superClass {
    constructor() {
      super();
    }
  }
}

• 被继承类2

const BaseClass2 = (superClass = null) => {
  superClass = superClass || class Empty {}
  return class extends superClass {
    constructor() {
      super();
 
    }
  }
}

• 继承类

class MainClass extends BaseClass2(BaseClass1()){
   constructor() {
      super();
    }
}