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(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.PromiseWorker = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
'use strict'
var messageIds = 0
function onMessage (self, e) {
var message = e.data
if (!Array.isArray(message) || message.length < 2) {
// Ignore - this message is not for us.
return
}
var messageId = message[0]
var error = message[1]
var result = message[2]
var callback = self._callbacks[messageId]
if (!callback) {
// Ignore - user might have created multiple PromiseWorkers.
// This message is not for us.
return
}
delete self._callbacks[messageId]
callback(error, result)
}
function PromiseWorker (worker) {
var self = this
self._worker = worker
self._callbacks = {}
worker.addEventListener('message', function (e) {
onMessage(self, e)
})
}
PromiseWorker.prototype.postMessage = function (userMessage) {
var self = this
var messageId = messageIds++
var messageToSend = [messageId, userMessage]
return new Promise(function (resolve, reject) {
self._callbacks[messageId] = function (error, result) {
if (error) {
return reject(new Error(error.message))
}
resolve(result)
}
/* istanbul ignore if */
if (typeof self._worker.controller !== 'undefined') {
// service worker, use MessageChannels because e.source is broken in Chrome < 51:
// https://bugs.chromium.org/p/chromium/issues/detail?id=543198
var channel = new MessageChannel()
channel.port1.onmessage = function (e) {
onMessage(self, e)
}
self._worker.controller.postMessage(messageToSend, [channel.port2])
} else {
// web worker
self._worker.postMessage(messageToSend)
}
})
}
module.exports = PromiseWorker
},{}]},{},[1])(1)
});
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