RunKit + npm: wait.for

var wait = require("wait.for") var contents = 'write("You must wait 5 seconds before page loads...<br/>");\ var a = wait.for(function(callback1){\ setTimeout(function(){\ callback1(null, "Hell O MFs");\ }, 5000);\ });\ exit(null, a);'; function route(){ eval('function page(write,exit){' + contents + '}'); var fakewrite = function(a){console.log(a)}; wait.for(page,fakewrite); } wait.launchFiber(route);