title: Not allow to require by using variable?
body: <pre><code>    const specialHandleLanguage = {
        en: 'en-au',
        pt: 'pt-br',
        tl: 'tl-ph',
        cn: 'zh-cn',
        hk: 'zh-hk',
        tw: 'zh-tw'
      };
  
      const lang = specialHandleLanguage['en'] || 'en';
      require(`moment/locale/${lang}`);
      moment.updateLocale(lang, {});
  </code></pre>
  
  <p>Due to <code>momentJS</code> has different file name, so I have to "require" the file base on specific language. I'm wondering how to achieve it as I'm hitting below exception</p>
  
  <blockquote>
    <p>error: bundling failed: Error: src/screen.js:Invalid call at line 449: require("moment/locale/" + lang)</p>
  </blockquote>