如何使用胖箭头 es6 语法重写此嵌套调用以设置？

Question

In https://github.com/yeahoffline/redis-mock/blob/master/test/client/redis-mock.keys.test.js :

  beforeEach(function (done) {
    r.set("hello", "test", function () {
      r.set("hallo", "test", function () {
        r.set("hxlo", "test", done);
      });
    });
  });

What is the way to convert this to ES6 fat arrow syntax? I tried looking for an online converter but failed to find one.

Answer 1

  beforeEach((done) => {
    r.set("hello", "test", () => {
      r.set("hallo", "test", () => {
        r.set("hxlo", "test", done);
      });
    });
  });

If it was a standalone function you would write

const setHellos = (done) => {.... }