[자바스크립트] 클래스를 반환하는걸 상속하는 함수

var calculatorMixin = Base => class extends Base {
    calc() {

        console.log('haha');

    }
};

var randomizerMixin = Base => class extends Base {
    randomize() {
        console.log('sibar');
    }
};



class Foo { }
class Bar extends calculatorMixin(randomizerMixin(Foo)) { }


const bar  = new Bar();
bar.calc();
bar.randomize();