1'use strict'; 2class MessageEvent { 3 constructor(data, target) { 4 this.data = data; 5 this.target = target; 6 } 7} 8 9exports.emitMessage = function(data) { 10 if (typeof this.onmessage === 'function') 11 this.onmessage(new MessageEvent(data, this)); 12}; 13