code: function resolvePluginsForBrowsers(browsers) {
    const plugins = [];
  
    if (!Array.isArray(browsers)) browsers = [browsers];
  
    browsers.forEach(browser => {
      const name = Object.keys(browser)[0];
      const version = browser[name];
  
      for (const pluginName in babelPluginsByEnvironmentVersion) {
        if (
          !babelPluginsByEnvironmentVersion[pluginName][name] ||
          babelPluginsByEnvironmentVersion[pluginName][name] > version
        ) {
          plugins.push(`babel-plugin-${pluginName}`);
        }
      }
    });
  
    return plugins;
  }
docs: Resolve Babel plugins for all 'browsers'
  @param {Array} browsers
  @returns {Array}