update mongoose options

config.json.example

@@ -32,7 +32,7 @@
   "LOGGLY_SUBDOMAIN": "example-subdomain",
   "LOGGLY_TOKEN": "example-token",
   "MAINTENANCE_MODE": "false",
-  "NODE_DB_URI": "mongodb://localhost/habitrpg",
+  "NODE_DB_URI": "mongodb://localhost:27017/habitrpg",
   "MONGODB_POOL_SIZE": "10",
   "NODE_ENV": "development",
   "PATH": "bin:node_modules/.bin:/usr/local/bin:/usr/bin:/bin",
@@ -70,7 +70,7 @@
   "SLACK_URL": "https://hooks.slack.com/services/some-url",
   "STRIPE_API_KEY": "aaaabbbbccccddddeeeeffff00001111",
   "STRIPE_PUB_KEY": "22223333444455556666777788889999",
-  "TEST_DB_URI": "mongodb://localhost/habitrpg_test",
+  "TEST_DB_URI": "mongodb://localhost:27017/habitrpg_test",
   "TRANSIFEX_SLACK_CHANNEL": "transifex",
   "WEB_CONCURRENCY": 1,
   "SKIP_SSL_CHECK_KEY": "key",

website/server/libs/setupMongoose.js

@@ -8,9 +8,15 @@ const POOL_SIZE = nconf.get('MONGODB_POOL_SIZE');
 
 // Do not connect to MongoDB when in maintenance mode
 if (MAINTENANCE_MODE !== 'true') {
-  const mongooseOptions = !IS_PROD ? {} : {
+  const commonOptions = {
+    useNewUrlParser: true,
+    useUnifiedTopology: true,
+  };
+
+  const mongooseOptions = !IS_PROD ? commonOptions : {
     keepAlive: 120,
     connectTimeoutMS: 30000,
+    ...commonOptions,
   };
 
   if (POOL_SIZE) mongooseOptions.poolSize = Number(POOL_SIZE);