code: function ws(uri, protocols, opts) {
    var instance;
    if (protocols) {
      instance = new WebSocket(uri, protocols);
    } else {
      instance = new WebSocket(uri);
    }
    return instance;
  }
docs: WebSocket constructor.
  
  The third `opts` options object gets ignored in web browsers, since it's
  non-standard, and throws a TypeError if passed to the constructor.
  See: https://github.com/einaros/ws/issues/227
  
  @param {String} uri
  @param {Array} protocols (optional)
  @param {Object} opts (optional)
  @api public