react-express-mongodb: lint sources

to fix some syntax issues in the existing code, the commit
put in place prettier and format the code

Signed-off-by: Jérémie Drouet <jeremie.drouet@gmail.com>

react-express-mongodb/backend/db/index.js

@@ -1,30 +1,32 @@
 /**
  * Created by Syed Afzal
  */
-const mongoose = require('mongoose');
-const {log} = require('../utils/helpers/logger');
+const mongoose = require("mongoose");
 
 exports.connect = (app) => {
-    const options = {
-        useNewUrlParser: true,
-        autoIndex: false, // Don't build indexes
-        reconnectTries: 30, // Retry up to 30 times
-        reconnectInterval: 500, // Reconnect every 500ms
-        poolSize: 10, // Maintain up to 10 socket connections
-        // If not connected, return errors immediately rather than waiting for reconnect
-        bufferMaxEntries: 0
-    }
+  const options = {
+    useNewUrlParser: true,
+    autoIndex: false, // Don't build indexes
+    reconnectTries: 30, // Retry up to 30 times
+    reconnectInterval: 500, // Reconnect every 500ms
+    poolSize: 10, // Maintain up to 10 socket connections
+    // If not connected, return errors immediately rather than waiting for reconnect
+    bufferMaxEntries: 0,
+  };
 
-    const connectWithRetry = () => {
-        mongoose.Promise = global.Promise;
-        console.log('MongoDB connection with retry')
-        mongoose.connect(process.env.MONGODB_URI, options).then(()=>{
-            console.log('MongoDB is connected');
-            app.emit('ready');
-        }).catch(err=>{
-            console.log('MongoDB connection unsuccessful, retry after 2 seconds.')
-            setTimeout(connectWithRetry, 2000)
-        })
-    }
-    connectWithRetry();
+  const connectWithRetry = () => {
+    mongoose.Promise = global.Promise;
+    console.log("MongoDB connection with retry");
+    mongoose
+      .connect(process.env.MONGODB_URI, options)
+      .then(() => {
+        console.log("MongoDB is connected");
+        app.emit("ready");
+      })
+      .catch((err) => {
+        console.log("MongoDB connection unsuccessful, retry after 2 seconds.");
+        setTimeout(connectWithRetry, 2000);
+      });
+  };
+  connectWithRetry();
 };