emailjs-tcp-socket
Version:
This shim brings the W3C Raw Socket API to node.js and Chromium. Its purpose is to enable apps to use the same api in Firefox OS, Chrome OS, and on the server.
47 lines (42 loc) • 1.18 kB
JavaScript
import { setTimeout } from 'core-js/library/web/timers'
// setZeroTimeout slightly adapted from
// https://github.com/shahyar/setZeroTimeout-js (CC BY 3.0).
// Provides a function similar to setImmediate() on Chrome.
const timeouts = []
const msgName = 'hackyVersionOfSetImmediate'
function postTimeout (fn) {
timeouts.push(fn)
postMessage(msgName, '*')
}
function handleMessage (event) {
if (event.source === window && event.data === msgName) {
if (event.stopPropagation) {
event.stopPropagation()
}
if (timeouts.length) {
try {
timeouts.shift()()
} catch (e) {
// Throw in an asynchronous closure to prevent setZeroTimeout from hanging due to error
setTimeout((function (e) {
return function () {
throw e.stack || e
}
}(e)), 0)
}
}
if (timeouts.length) { // more left?
postMessage(msgName, '*')
}
}
}
let fn
if (typeof setImmediate !== 'undefined') {
fn = setImmediate
} else if (typeof window !== 'undefined') {
window.addEventListener('message', handleMessage, true)
fn = postTimeout
} else {
fn = f => setTimeout(f, 0)
}
export default fn