diff --git a/lib/Redis.ts b/lib/Redis.ts
index a459b1a..d36cc2e 100644
--- a/lib/Redis.ts
+++ b/lib/Redis.ts
@@ -6,82 +6,83 @@
  */
 
 import IORedis from 'ioredis';
-import {debug} from './debug';
-import {LabelledKey} from './Key';
+import { debug } from './debug';
+import { LabelledKey } from './Key';
 
-const logger = debug('redis');
+const logger = debug ('redis');
 
 export class Redis {
   private _redis: IORedis | null = null;
 
-  public connect(url: string): void {
-    const log = logger.extend('connect');
-    log('connecting to redis instance %s', url);
+  public connect (url: string): void {
+    const log = logger.extend ('connect');
+    log ('connecting to redis instance %s', url);
     if (this._redis !== null) {
-      log('disconnecting existing redis client');
-      this.disconnect();
+      log ('disconnecting existing redis client');
+      this.disconnect ();
     }
 
-    this._redis = new IORedis(url);
-    this._redis.on('connect', () => {
-      log('connected');
+    this._redis = new IORedis (url);
+    this._redis.on ('connect', () => {
+      log ('connected');
     });
-    this._redis.on('ready', () => {
-      log('ready');
+    this._redis.on ('ready', () => {
+      log ('ready');
     });
-    this._redis.on('error', (err) => {
-      log('error %o', err);
+    this._redis.on ('error', (err) => {
+      log ('error %o', err);
     });
-    this._redis.on('reconnecting', () => {
-      log('reconnecting');
+    this._redis.on ('reconnecting', () => {
+      log ('reconnecting');
     });
-    this._redis.on('end', () => {
-      log('connection ended');
+    this._redis.on ('end', () => {
+      log ('connection ended');
     });
   }
 
-  public disconnect(): void {
-    const log = logger.extend('disconnect');
-    log('disconnecting redis client');
+  public disconnect (): void {
+    const log = logger.extend ('disconnect');
+    log ('disconnecting redis client');
     if (this._redis === null) {
-      log('redis is inactive, skipping');
+      log ('redis is inactive, skipping');
       return;
     }
-    this._redis.quit();
+    this._redis.quit ();
     this._redis = null;
-    log('done');
+    log ('done');
   }
 
-  public async set_key(key: LabelledKey): Promise<void> {
-    const log = logger.extend('set_key');
-    log('trying to set key %s to redis', key.index);
+  public async set_key (key: LabelledKey): Promise<void> {
+    const log = logger.extend ('set_key');
+    log ('trying to set key %s to redis', key.index);
     if (this._redis === null) {
-      log('redis is inactive, skipping');
+      log ('redis is inactive, skipping');
       return;
     }
-    const valid_for = Math.floor(
-      (key.valid_until - new Date().getTime()) / 1000
+    const valid_for = Math.floor (
+      (key.valid_until - (new Date)
+        .getTime ()) / 1000
     );
-    log('key is valid for %d seconds', valid_for);
-    await this._redis.setex(key.index, valid_for, JSON.stringify(key));
-    log('saved key');
+    log ('key is valid for %d seconds', valid_for);
+    await this._redis.setex (key.index, valid_for, JSON.stringify (key));
+    log ('saved key');
   }
 
-  public async get_key(index: string): Promise<LabelledKey | null> {
-    const log = logger.extend('get_key');
-    log('trying to get key %s from redis', index);
+  public async get_key (index: string): Promise<LabelledKey | null> {
+    const log = logger.extend ('get_key');
+    log ('trying to get key %s from redis', index);
     if (this._redis === null) {
-      log('redis is inactive, skipping');
+      log ('redis is inactive, skipping');
       return null;
     }
-    const res = await this._redis.get(index);
+    const res = await this._redis.get (index);
     if (res === null) {
-      log('key not found in redis');
+      log ('key not found in redis');
       return null;
     }
-    log('key found');
-    return JSON.parse(res);
+    log ('key found');
+    return JSON.parse (res);
   }
 }
 
-export const redis = new Redis();
+export const redis = (new Redis);