const express = require('express') const path = require('path') const next = require('next') const dev = process.env.NODE_ENV !== 'production' const app = next({ dev }) const handle = app.getRequestHandler() const i18nextMiddleware = require('i18next-express-middleware') const Backend = require('i18next-node-fs-backend') const { i18nInstance } = require('./i18n') // init i18next with serverside settings // using i18next-express-middleware i18nInstance .use(Backend) .use(i18nextMiddleware.LanguageDetector) .init({ fallbackLng: 'en', preload: ['en', 'de'], // preload all langages ns: ['common', 'home', 'page2'], // need to preload all the namespaces backend: { loadPath: path.join(__dirname, '/locales/{{lng}}/{{ns}}.json'), addPath: path.join(__dirname, '/locales/{{lng}}/{{ns}}.missing.json') } }, () => { // loaded translations we can bootstrap our routes app.prepare() .then(() => { const server = express() // enable middleware for i18next server.use(i18nextMiddleware.handle(i18nInstance)) // serve locales for client server.use('/locales', express.static(path.join(__dirname, '/locales'))) // missing keys server.post('/locales/add/:lng/:ns', i18nextMiddleware.missingKeyHandler(i18nInstance)) // use next.js server.get('*', (req, res) => handle(req, res)) server.listen(3000, (err) => { if (err) throw err console.log('> Ready on http://localhost:3000') }) }) })