Small change

src/configs/env.config.ts

@@ -1,8 +1,6 @@
 import { config } from 'dotenv';
 
 export class EnvConfig {
-  private static _instance: EnvConfig;
-
   constructor() {
     config({ path: '.env' });
   }

src/configs/firebase.config.ts

@@ -7,4 +7,4 @@ firebaseAdmin.initializeApp({
   storageBucket: FIREBASE_STORAGE_BUCKET_LINK
 });
 
-export default firebaseAdmin;
+export { firebaseAdmin };

src/modules/file/file.service.ts

@@ -1,7 +1,7 @@
-import firebaseAdmin from 'src/configs/firebase.config';
 import { File } from 'multer';
 import { Injectable } from '@nestjs/common';
 import { STORAGE_FILE_EXPIRE_DAY } from 'src/constants';
+import { firebaseAdmin } from 'src/configs/firebase.config';
 
 @Injectable()
 export class FileService {