index.js

const GitHub = require('gh.js');

/**
 * sortByStarredSize
 * Sort your personal starred repos by size.
 *
 * @name sortByStarredSize
 * @function
 * @param {String} username The GitHub username.
 * @param {String} lang A specific language.
 * @param {Function} callback The callback function.
 * @return {gh.js} The `gh.js` instance.
 */
function sortByStarredSize(username, lang, callback) {
  if (typeof lang === 'function') {
    callback = lang;
    lang = undefined;
  }

  const gh = new GitHub();
  gh.get(`users/${username}/starred`, { all: true }, (err, repos) => {
    if (err) {
      return callback(err);
    }

    if (lang) {
      repos = repos.filter(x => x.language === standardLang(lang));
    }
    repos.sort((a, b) => {
      return a.size > b.size ? 1 : -1;
    });
    callback(null, repos);
  });

  return gh;
}

const standardLang = lang => {
  // js
  if (['js', 'javascript', 'JavaScript'].includes(lang)) {
    return 'JavaScript';
  }

  // py
  if (['py', 'python', 'Python'].includes(lang)) {
    return 'Python';
  }

  // ts
  if (['ts', 'tsc', 'typescript', 'Typescript', 'TypeScript'].includes(lang)) {
    return 'TypeScript';
  }

  // sh
  if (['sh', 'shell', 'Shell'].includes(lang)) {
    return 'Shell';
  }

  // md
  if (['md', 'markdown', 'MarkDown', 'null'].includes(lang)) {
    return null;
  }

  // c
  if (['c', 'C'].includes(lang)) {
    return 'C';
  }

  // c++
  if (['c++', 'C++'].includes(lang)) {
    return 'C++';
  }
};

module.exports = sortByStarredSize;