feat: Convert helpers to use JS files

packages/backend/src/helpers/check-worker-readiness.js

@@ -0,0 +1,11 @@
+import Redis from 'ioredis';
+import logger from './logger';
+import redisConfig from '../config/redis';
+
+const redisClient = new Redis(redisConfig);
+
+redisClient.on('ready', () => {
+  logger.info(`Workers are ready!`);
+
+  redisClient.disconnect();
+});