use promise.all for fs operations

src/app.service.ts

@@ -106,8 +106,12 @@ export class AppService extends ConsoleLogger {
       this.log(`Moving files.`);
       for (const file of files) {
         file.branchId = checkoutResult.branchId;
-        await fs.rename(file.savePath, path.join(this.repoPath, file.filename));
       }
+      await Promise.all(
+        files.map((file) =>
+          fs.rename(file.savePath, path.join(this.repoPath, file.filename)),
+        ),
+      );
       this.log(`Committing files.`);
       await this.git
         .add(files.map((f) => f.filename))
@@ -121,13 +125,15 @@ export class AppService extends ConsoleLogger {
       }
     } catch (e) {
       this.error(`Errored processing files: ${e.toString()}`);
+      const filesToDelete: string[] = [];
       for (const file of files) {
-        try {
-          await fs.unlink(file.savePath);
-          await fs.unlink(path.join(this.repoPath, file.filename));
-        } catch (e) {}
+        filesToDelete.push(file.savePath);
+        filesToDelete.push(path.join(this.repoPath, file.filename));
         file.reject(new ReturnMessageDto(500, 'upload failed').toException());
       }
+      try {
+        await Promise.all(filesToDelete.map((path) => fs.unlink(path)));
+      } catch (e) {}
     } finally {
       for (const file of files) {
         this.queueHashmap.delete(file.filename);