#!/usr/bin/env node /** * Module dependencies. */ const app = require('../app') const http = require('http') const logger = require('../logger') /** * Get port from environment and store in Express. */ const port = normalizePort(process.env.PORT || '3000') app.set('port', port) /** * Create HTTP server. */ const 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. */ function normalizePort(val) { const port = parseInt(val, 10) if (isNaN(port)) { // named pipe return val } if (port >= 0) { // port number return port } return false } /** * Event listener for HTTP server "error" event. */ function onError(error) { if (error.syscall !== 'listen') { throw error } const bind = typeof port === 'string' ? 'Pipe ' + port : 'Port ' + port // handle specific listen errors with friendly messages switch (error.code) { case 'EACCES': logger.error(bind + ' requires elevated privileges') throw error case 'EADDRINUSE': logger.error(bind + ' is already in use') throw error default: throw error } } /** * Event listener for HTTP server "listening" event. */ function onListening() { const addr = server.address() const bind = typeof addr === 'string' ? 'pipe ' + addr : 'port ' + addr.port logger.info('Listening on ' + bind) }