经过大量的谷歌搜索，我决定 npm install express 并添加

  var express = require（'express'）; 
 var app = express（）; 

 app.set（'port'，（process.env.PORT || 5000））; 

 //为避免Heroku $ PORT错误
 app.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'））; 
}）; 
 

这样可以解决错误，尽管我不喜欢为了避免一个错误而添加express。如果有人找到更好的解决方案，请告诉我。

I found a dozen solutions for Express powered apps with setting port to listen on. But I have an app that doesn't use Express and doesn't in fact listens anything. And after 60 seconds of it successfully running I get a Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch message. How I can get around it? Thanks.

After lots of googling I decided to npm install express and add

var express = require('express');
var app     = express();

app.set('port', (process.env.PORT || 5000));

//For avoidong Heroku $PORT error
app.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'));
});

This fixed the error, even though I don't like adding express just to avoid one error. If someone finds a better solution, please let me know.