title: npm error ELIFECYCLE on ctrl+c
body: <p>I've started a new socket.io project with heroku. The server runs fine locally on windows. I start it with npm start but when I shut it down with ctrl + c I get this error in the console:</p>
  
  <pre><code>npm ERR! Windows_NT 6.3.9600
  npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\
  node_modules\\npm\\bin\\npm-cli.js" "start"
  npm ERR! node v6.11.4
  npm ERR! npm  v3.10.10
  npm ERR! code ELIFECYCLE
  npm ERR! test1@1.0.0 start: `node index.js`
  npm ERR! Exit status 3221225786
  npm ERR!
  npm ERR! Failed at the test1@1.0.0 start script 'node index.js'.
  npm ERR! Make sure you have the latest version of node.js and npm installed.
  npm ERR! If you do, this is most likely a problem with the test1 package,
  npm ERR! not with npm itself.
  npm ERR! Tell the author that this fails on your system:
  npm ERR!     node index.js
  npm ERR! You can get information on how to open an issue for this project with:
  npm ERR!     npm bugs test1
  npm ERR! Or if that isn't available, you can get their info via:
  npm ERR!     npm owner ls test1
  npm ERR! There is likely additional logging output above.
  </code></pre>
  
  <p>I have searched for a solution but the very little I have been able to find has given no solution. I've tried updating npm and node, running npm install again, clearing the npm cache and probably some other actions I can't recall.</p>
  
  <p>Here is my index.js</p>
  
  <pre><code>const express = require('express');
  const socketIO = require('socket.io');
  const path = require('path');
  
  const PORT = process.env.PORT || 3000;
  
  const server = express()
    .use(express.static(__dirname + '/client'))
    .listen(PORT, () =&gt; console.log(`Listening on ${ PORT }`));
  
  const io = socketIO(server);
  
  const pg = require('pg');
  var connectionString = "postgres://jdirjtnfueksiw:823e80fbae9599f0d6797f82342d83bccf1caea764b8a1659356f3ee89r69f94@ec1-78-222-138-451.compute-1.amazonaws.com:5432/jf84jd75jgu26d5?ssl=true";
  
  pg.connect(connectionString, function(err, client, done) {
      if (err) {
          throw err;
      }
      else {
          console.log('Database connection test successful');
      }
  });
  
  io.on('connection', function (socket) {
          socket.emit('connected');
  
          console.log('New connection from ' + socket.request.connection.remoteAddress);
  
          socket.on('disconnect', function () {
              console.log('Player left');
          });
      });
  </code></pre>
  
  <p>my package.json</p>
  
  <pre><code>{
    "name": "test1",
    "version": "1.0.0",
    "engines": {
      "node": "6.11.4"
    },
    "main": "index.js",
    "scripts": {
      "start": "node index.js"
    },
    "keywords": [],
    "author": "",
    "license": "ISC",
    "dependencies": {
      "pg": "6.x",
      "express": "4.13.4",
      "socket.io": "1.4.6"
    },
    "devDependencies": {},
    "description": ""
  }
  </code></pre>
  
  <p>Thank you for any help.</p>