Another error occurs in src/config.js, src/metadata/controller.js, and node_modules/webrtc-polyfill/lib/Blob.js

netlify/functions/api.js

import express from 'express';
import cors from 'cors';
import { envConfigFile, MONGODB_URL } from '../../src/config.js';
import validateEnvFile from '../../src/envValidation.js';
import connectToDatabase from '../../src/database.js';
import router from '../../src/routes.js';
import serverless from "serverless-http";

export const app = express();

const startServer = async () => {
    await validateEnvFile(envConfigFile, ['MONGODB_URL']);
    await connectToDatabase(MONGODB_URL);

    app.use(express.json({ limit: '5mb' }));
    app.use(cors());

    app.use('/api/v1', router);

    app.use((req, res, next) => {
        res.status(404).json('The requested resource was not found on this server');
    });
};

startServer();

export const handler = serverless(app);

src/config.js

   const __filename = fileURLToPath(import.meta.url); #9th line

src/metadata/controller.js (ignore)

   const __filename = fileURLToPath(import.meta.url);

node_modules/webrtc-polyfill/lib/Blob.js:1:34:

[ERROR] Top-level await is currently not supported with the "cjs" output format
4:50:54 PM:     node_modules/webrtc-polyfill/lib/Blob.js:1:34:
4:50:54 PM:       1 │ const _Blob = globalThis.Blob || (await import('node:buffer')).Blob