Chapter-5.md

Define resolve method

// ==========================
//   Inside fetch.js module
// ==========================

var fetchResult = {
  // data: null,
  resolve: function(data) {
    this.callback(data);
  },
  done: function(callback) {
    // callback(this.data);
    this.callback = callback;
  }
};

fetchData(function (data) {
  // fetchResult.data = data;
  fetchResult.resolve(data);
});

module.exports = fetchResult;

We don’t need the data property anymore, and because the fetchResult is just a simple object, we need some way to share the callback between the done method and the resolve method which here we chose to set the callback as a method of the object (here this refers to the fetchResult object). You also can assign it to a variable in the parent scope of the object and also there might be some other ways).

And the App.js file remains the same as before.

In my opinion, at this point, we should refactor our code to have a better view of what we have done.