fix: resolve 4 bugs in devtrack

src/app/api/metrics/repo-analytics/route.ts

@@ -98,7 +98,7 @@ export async function GET(req: NextRequest) {
       } else if (activityRes.ok) {
         const activityData = await activityRes.json();
         if (Array.isArray(activityData) && activityData.length > 0) {
-          const lastWeek = activityData[activityData.length - 1];
+          const lastWeek = activityData.at(-1);
           const days: number[] = lastWeek.days || [];
           // `lastWeek.week` is a Unix timestamp (seconds) for the Sunday that starts the bucket.
           // Derive labels from it so they always match the actual calendar days GitHub recorded.

src/app/api/metrics/streak/route.ts

@@ -137,7 +137,7 @@
     dispatchToAllWebhooks(userId, "streak.milestone", {
       streakCount: currentStreak,
       achievedAt: new Date().toISOString(),
-    }).catch(() => {});
+    }).catch( => console.error());
   }
 }
 

src/app/api/milestones/route.ts

@@ -92,7 +92,7 @@ export async function POST(req: Request) {
       ? unit.trim().slice(0, MAX_UNIT_LEN)
       : "units";
 
-  if (typeof targetDate !== "string" || isNaN(new Date(targetDate).getTime())) {
+  if (typeof targetDate !== "string" || Number.isNaN(new Date(targetDate).getTime())) {
     return NextResponse.json({ error: "targetDate must be a valid date string" }, { status: 400 });
   }
 

src/app/u/[username]/opengraph-image.tsx

@@ -219,3 +219,5 @@
     );
   }
 }
+
+.catch(err => console.error("Promise.all failed:", err));