So my application is Node, Express, GraphQL and MongoDB and is written in TS.
I’m triggering the vercel deployment using a github action. The deployment seems to working fine but it is not getting the serverless function to run.
Entry point of my application is src/server.ts
and in the build it is dist/src/server.js

But on the vercel dashboard it is not picking the serverless function but showing statis assets.

My vercel.json file

{
  "version": 2,
  "builds": [
    {
        "src": "dist/src/server.js",
        "use": "@vercel/node",
        "config": { "includeFiles": ["dist/**"] }
    }
    ],
    "routes": [
        {
            "src": "/(.*)",
            "dest": "dist/src/server.js"
        }
    ]
}

and my src/server.ts is attached as a file

//imports here

//some TS interfaces here

function createServer(): ServerSetup {
  const app = express() // Express server

  // * Middlewares here
 

  const expressServer = http.createServer(app)

  const apolloServer = new ApolloServer<CustomContext>({
    typeDefs: typeDefs,
    resolvers: resolvers,
    cache: 'bounded',
  })

  return { app, expressServer, apolloServer }
}

async function startServer() {
  const { app, expressServer, apolloServer } = createServer()

  await connectDatabase()

  // * Start Apollo servers
  await apolloServer.start()

  // * Apply middleware after the servers have started
  // app.get('/', (_, res: Response) => {
  //   const routes = [process.env.BASE_URL + ':' + PORT + '/public', process.env.BASE_URL + ':' + PORT + '/protected']

  //   res.status(200).send(`<p>Server is up and running</p> <br> ${routes.map((el) => `<p>Route to <a href="${el}">${el}</a></p>`)} `)
  // })

  app.use(
    '/graphql',
    authMiddleware,
    expressMiddleware(apolloServer, {
      context: async ({ req, res }: { req: CustomRequest; res: Response }) => ({
        req,
        res,
        user: req.user,
      }),
    }),
  )

  expressServer.listen(PORT, () => {
    console.log(`[???? server] Server is running at http://localhost:${PORT}`)
  })

  const socketServer = new SocketServer(expressServer)
  console.log('[???? socket] SocketServer has been started.')

  return { expressServer, socketServer }
}

export { createServer, startServer }

startServer()

export default startServer