index.js

const Twitter = require("twitter");
const config = require("./config.js");
const T = new Twitter(config);

// Set up your search parameters
const params = {
  q: "#reactjs",
  count: 10,
  result_type: "recent",
  lang: "en"
};

// Initiate your search using the above paramaters
T.get("search/tweets", params, (err, data, response) => {
  console.log("search");
  // If there is no error, proceed
  if (err) {
    return console.log(err);
  }
  // Loop through the returned tweets
  const tweetsId = data.statuses.map(tweet => ({ id: tweet.id_str }));

  tweetsId.map(tweetId => {
    T.post("favorites/create", tweetId, (err, response) => {
      if (err) {
        return console.log(err[0].message);
      }

      const username = response.user.screen_name;
      const favoritedTweetId = response.id_str;
      console.log(
        `Favorited: https://twitter.com/${username}/status/${favoritedTweetId}`
      );
    });
  });
});