webpack-dev-server/client/utils/sendMessage.js

'use strict';
/* global __resourceQuery WorkerGlobalScope self */
// Send messages to the outside, so plugins can consume it.

function sendMsg(type, data) {
  if (typeof self !== 'undefined' && (typeof WorkerGlobalScope === 'undefined' || !(self instanceof WorkerGlobalScope))) {
    self.postMessage({
      type: "webpack".concat(type),
      data: data
    }, '*');
  }
}

module.exports = sendMsg;