module.exports = function () { const server = require('http').createServer(this.nuxt.renderer.app) const io = require('socket.io')(server) // overwrite nuxt.listen() this.nuxt.listen = (port, host) => new Promise((resolve) => server.listen(port || 3000, host || 'localhost', resolve)) // close this server on 'close' event this.nuxt.hook('close', () => new Promise((resolve) => server.close(resolve))) // Add socket.io events let messages = [] io.on('connection', (socket) => { socket.on('last-messages', function (fn) { fn(messages.slice(-50)) }) socket.on('send-message', function (message) { messages.push(message) socket.broadcast.emit('new-message', message) }) }) }