Importing apiKeys.js and using it in other JavaScript file

app.js

import apiConfig from '../../apikeys';
...

  getShelfBooksURL() {
    // https://www.goodreads.com/api/index#reviews.list
    let goodReadsURL = ` https://www.goodreads.com/review/list`;
    let q = `v=2&key=${apiConfig.goodreadsKey}&id=${apiConfig.goodreadsUserID}&shelf=read&sort=date_started`;

    return {goodReadsURL, q};
  }