code: function getPlugins(plugins) {
    if (typeof plugins !== 'object' || !Array.isArray(plugins)) return undefined;
  
    return plugins
      .filter(Boolean)
      .map(plugin => {
        if (Array.isArray(plugin)) {
          // The array should have at least one item, which should be the
          // plugin package name.
          if (!plugin[0]) return undefined;
  
          return requireFromString(plugin[0], plugin.slice(1));
        } else if (typeof plugin === 'string') {
          return requireFromString(plugin);
        }
        return plugin;
      })
      .filter(plugin => typeof plugin !== 'undefined');
  }
docs: /*
  Returns plugins, instantiating with arguments if provided.