migrate to typescript

src/utils/redis.ts

@@ -0,0 +1,19 @@
+import {config} from '../config';
+import {Logger} from './logger';
+import redis, {Callback} from 'redis';
+
+let get, set;
+if (config.redis) {
+    Logger.info('Connected to redis');
+    const client = redis.createClient(config.redis);
+    get = client.get;
+    set = client.set;
+} else {
+    get = (key: string, callback?: Callback<string | null>) => callback(null, undefined);
+    set = (key: string, value: string, callback?: Callback<string | null>) => callback(null, undefined);
+}
+
+export {
+    get,
+    set,
+};