My purpose is to upload file via nestjs application using package @types/multer.

But the problem is that official docs says:

As soon as i started to write my application, i decided to use FastifyAdaptor as primary engine.

const app = await NestFactory.create<NestFastifyApplication>(
    BackendAdminModule,
    new FastifyAdapter({
      logger: true
    }))

And all my routes working on fastify engine.

Is there any possible solution to use both platforms(fastify and express)

Or instanciate somehow for 1 particular route an express engine to make it possible to upload and validate file/files via @types/multer package?

Any possible solutions that might be useful in my case, thanks in advance!