update with-react-i18next sample with latest dependencies (#3835)

examples/with-react-i18next/package.json

@@ -11,15 +11,15 @@
   "author": "",
   "license": "MIT",
   "dependencies": {
-    "express": "4.15.3",
-    "i18next": "8.4.2",
-    "i18next-browser-languagedetector": "2.0.0",
-    "i18next-express-middleware": "1.0.5",
+    "express": "4.16.2",
+    "i18next": "10.4.1",
+    "i18next-browser-languagedetector": "2.1.0",
+    "i18next-express-middleware": "1.0.10",
     "i18next-node-fs-backend": "1.0.0",
-    "i18next-xhr-backend": "1.4.2",
-    "next": "latest",
+    "i18next-xhr-backend": "1.5.1",
+    "next": "5.0.0",
     "react": "16.2.0",
     "react-dom": "16.2.0",
-    "react-i18next": "4.6.3"
+    "react-i18next": "7.3.6"
   }
 }

examples/with-react-i18next/server.js

@@ -2,7 +2,6 @@ const express = require('express')
 const path = require('path')
 const next = require('next')
 
-const port = parseInt(process.env.PORT, 10) || 3000
 const dev = process.env.NODE_ENV !== 'production'
 const app = next({ dev })
 const handle = app.getRequestHandler()
@@ -17,6 +16,7 @@ i18n
   .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: {
@@ -41,9 +41,9 @@ i18n
         // use next.js
         server.get('*', (req, res) => handle(req, res))
 
-        server.listen(port, (err) => {
+        server.listen(3000, (err) => {
           if (err) throw err
-          console.log(`> Ready on http://localhost:${port}`)
+          console.log('> Ready on http://localhost:3000')
         })
       })
   })