better error handling

server/index.js

@@ -12,13 +12,21 @@ app.listen(process.env.PORT, () => {
 })
 
 let db
-const mongoUrl = `mongodb://${process.env.MONGO_SERVER}:27017`
-MongoClient.connect(mongoUrl, { useNewUrlParser: true }).then(client => {
-  db = client.db(process.env.MONGO_DB)
-  console.log('Connected succesfully to server')
-}).catch(err => console.log(err))
+async function connectToMongo() {
+  try {
+    const mongoUrl = `mongodb://${process.env.MONGO_SERVER}:27017`
+    const client = await MongoClient.connect(mongoUrl, { useNewUrlParser: true })
+    db = client.db(process.env.MONGO_DB)
+    console.log('Connected succesfully to server')
+  } catch (e) {
+    console.log(e)
+    setTimeout(connectToMongo, 5000)
+  }
+}
 
-app.use(function(req, res, next) {
+connectToMongo()
+
+app.use(function (req, res, next) {
   res.header('Access-Control-Allow-Origin', '*')
   res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept')
   next()
@@ -61,7 +69,7 @@ function dateFromObjectId(objectId) {
 
 app.use(express.static(path.join(__dirname, '../dist')))
 
-app.get('/*', function(req, res) {
+app.get('/*', function (req, res) {
   res.sendFile(path.join(__dirname, '../dist/index.html'))
 })