Heroku Node.js错误R10（引导超时）-> Web进程在启动后60秒内未能绑定到$ PORT

经过大量谷歌搜索后，我决定

npm install express

var express = require('express');var app     = express();app.set('port', (process.env.PORT || 5000));//For avoidong Heroku $PORT errorapp.get('/', function(request, response) {    var result = 'App is running'    response.send(result);}).listen(app.get('port'), function() {    console.log('App is running, server is listening on port ', app.get('port'));});

即使我不喜欢添加express只是为了避免一个错误，这也修复了错误。如果有人找到更好的解决方案，请告诉我。