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index.js
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index.js
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const app = require('./app')
const http = require('http')
const normalizePort = (val) => {
const port = parseInt(val, 10)
if (isNaN(port)) {
return val
}
if (port >= 0) {
return port
}
return false
}
const port = normalizePort(process.env.PORT || '3000')
app.set('port', port);
/**
* Create HTTP server.
*/
var server = http.createServer(app);
/**
* Listen on provided port, on all network interfaces.
*/
server.listen(port);
server.on('error', onError);
server.on('listening', onListening);
/**
* Normalize a port into a number, string, or false.
*/
/**
* Event listener for HTTP server "error" event.
*/
function onError(error) {
if (error.syscall !== 'listen') {
throw error;
}
var bind = typeof port === 'string'
? 'Pipe ' + port
: 'Port ' + port;
// handle specific listen errors with friendly messages
switch (error.code) {
case 'EACCES':
console.error(bind + ' requires elevated privileges');
process.exit(1);
break;
case 'EADDRINUSE':
console.error(bind + ' is already in use');
process.exit(1);
break;
default:
throw error;
}
}
/**
* Event listener for HTTP server "listening" event.
*/
function onListening() {
var addr = server.address();
console.info('Environment:', process.env.NODE_ENV)
console.info("==> 🌎 Listening on port %s. Open up http://localhost:%s/ in your browser.", addr.port, addr.port)
}