refactor: 🐛 값이 0일때를 고려해 null처리 변경 || -> ??, push에서 스프레드연산자로 변경

- #416
42Statistics · Mar 12, 2024 · 7a5e8e6 · 7a5e8e6
1 parent e8550b5
commit 7a5e8e6
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/app/src/feed/feed.cache.service.ts b/app/src/feed/feed.cache.service.ts
@@ -8,16 +8,16 @@ export class FeedCacheService {
   private feedCache = new Map<number, (typeof FeedUnion)[]>();
 
   async get(userId: number): Promise<(typeof FeedUnion)[]> {
-    return this.feedCache.get(userId) || [];
+    return this.feedCache.get(userId) ?? [];
   }
 
   async set(userId: number, feed: (typeof FeedUnion)[]): Promise<void> {
     this.feedCache.set(userId, feed);
   }
 
   async writeFeed(userId: number, feed: typeof FeedUnion): Promise<void> {
-    const cachedFeedList = await this.get(userId);
-    cachedFeedList.push(feed);
-    await this.set(userId, cachedFeedList);
+    const prev = await this.get(userId);
+
+    await this.set(userId, [...prev, feed]);
   }
 }