@polkadot/api-provider/ws/polyfill.js

"use strict";

// Copyright 2017-2018 @polkadot/api-provider authors & contributors
// This software may be modified and distributed under the terms
// of the ISC license. See the LICENSE file for details.
// tslint:disable-next-line
if (typeof WebSocket === 'undefined') {
  // @ts-ignore
  global.WebSocket = require('websocket').w3cwebsocket;
}