diff --git a/services/notifications/app.js b/services/notifications/app.js
index 7d5b007e22..d12686976b 100644
--- a/services/notifications/app.js
+++ b/services/notifications/app.js
@@ -1,48 +1,60 @@
-metrics = require("metrics-sharelatex")
-metrics.initialize("notifications")
-Settings = require 'settings-sharelatex'
-logger = require 'logger-sharelatex'
-logger.initialize("notifications-sharelatex")
-express = require('express')
-app = express()
-controller = require("./app/js/NotificationsController")
-mongojs = require('mongojs')
-db = mongojs(Settings.mongo.url, ['notifications'])
-Path = require("path")
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * DS103: Rewrite code to no longer use __guard__
+ * DS207: Consider shorter variations of null checks
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+const metrics = require("metrics-sharelatex");
+metrics.initialize("notifications");
+const Settings = require('settings-sharelatex');
+const logger = require('logger-sharelatex');
+logger.initialize("notifications-sharelatex");
+const express = require('express');
+const app = express();
+const controller = require("./app/js/NotificationsController");
+const mongojs = require('mongojs');
+const db = mongojs(Settings.mongo.url, ['notifications']);
+const Path = require("path");
 
-metrics.memory.monitor(logger)
+metrics.memory.monitor(logger);
 
-HealthCheckController = require("./app/js/HealthCheckController")
+const HealthCheckController = require("./app/js/HealthCheckController");
 
-app.configure ()->
-	app.use express.methodOverride()
-	app.use express.bodyParser()
-	app.use metrics.http.monitor(logger)
-	app.use express.errorHandler()
+app.configure(function(){
+	app.use(express.methodOverride());
+	app.use(express.bodyParser());
+	app.use(metrics.http.monitor(logger));
+	return app.use(express.errorHandler());
+});
 
-metrics.injectMetricsRoute(app)
+metrics.injectMetricsRoute(app);
 
-app.post '/user/:user_id', controller.addNotification
-app.get '/user/:user_id', controller.getUserNotifications
-app.del '/user/:user_id/notification/:notification_id', controller.removeNotificationId
-app.del '/user/:user_id', controller.removeNotificationKey
-app.del '/key/:key', controller.removeNotificationByKeyOnly
+app.post('/user/:user_id', controller.addNotification);
+app.get('/user/:user_id', controller.getUserNotifications);
+app.del('/user/:user_id/notification/:notification_id', controller.removeNotificationId);
+app.del('/user/:user_id', controller.removeNotificationKey);
+app.del('/key/:key', controller.removeNotificationByKeyOnly);
 
-app.get '/status', (req, res)->
-	res.send('notifications sharelatex up')
+app.get('/status', (req, res)=> res.send('notifications sharelatex up'));
 
-app.get '/health_check', (req, res)->
-	HealthCheckController.check (err)->
-		if err?
-			logger.err err:err, "error performing health check"
-			res.send 500
-		else
-			res.send 200
+app.get('/health_check', (req, res)=>
+	HealthCheckController.check(function(err){
+		if (err != null) {
+			logger.err({err}, "error performing health check");
+			return res.send(500);
+		} else {
+			return res.send(200);
+		}
+	})
+);
 
-app.get '*', (req, res)->
-	res.send 404
+app.get('*', (req, res)=> res.send(404));
 
-host = Settings.internal?.notifications?.host || "localhost"
-port = Settings.internal?.notifications?.port || 3042
-app.listen port, host, ->
-	logger.info "notifications starting up, listening on #{host}:#{port}"
+const host = __guard__(Settings.internal != null ? Settings.internal.notifications : undefined, x => x.host) || "localhost";
+const port = __guard__(Settings.internal != null ? Settings.internal.notifications : undefined, x1 => x1.port) || 3042;
+app.listen(port, host, () => logger.info(`notifications starting up, listening on ${host}:${port}`));
+
+function __guard__(value, transform) {
+  return (typeof value !== 'undefined' && value !== null) ? transform(value) : undefined;
+}
\ No newline at end of file
diff --git a/services/notifications/config/settings.defaults.js b/services/notifications/config/settings.defaults.js
index 3baacee60f..5307d600a4 100644
--- a/services/notifications/config/settings.defaults.js
+++ b/services/notifications/config/settings.defaults.js
@@ -1,8 +1,13 @@
-module.exports = Settings =
-	internal:
-		notifications:
-			port: 3042
-			host: process.env["LISTEN_ADDRESS"] or "localhost"
+let Settings;
+module.exports = (Settings = {
+	internal: {
+		notifications: {
+			port: 3042,
+			host: process.env["LISTEN_ADDRESS"] || "localhost"
+		}
+	},
 
-	mongo:
-		url: process.env['MONGO_CONNECTION_STRING'] or "mongodb://#{process.env["MONGO_HOST"] or "localhost"}/sharelatex"
+	mongo: {
+		url: process.env['MONGO_CONNECTION_STRING'] || `mongodb://${process.env["MONGO_HOST"] || "localhost"}/sharelatex`
+	}
+});