Sending Files

[jmcdo29]

Feature Request

I didn't see any old/closed issues referring to supporting sending files other than support requests that were directed towards Discord.

I'd like to see Nest support sending files out of the box, by making a check in the reply method of the ExpressAdapter and FastifyAdapter and using the proper method accordingly (it looked like Fastify can actually handle this under its hood, so we'd just need to support it with Express.

Is your feature request related to a problem? Please describe.

Not really a problem, but sending files is somewhat common, and having to use @Res() to do it is a major buzzkill for me in the Nest world. Losing the use of post-request interceptor functionality is really annoying, especially when it comes to logging.

Describe the solution you'd like

I'd like to see Nest support the returning of a Buffer or a stream and calling the appropriate method from Express stream.pipe(res) or Fastify reply.send(stream) to send the file back successfully.

Teachability, Documentation, Adoption, Migration Strategy

Add to the docs that sending files is supported. Shouldn't need much more teachability, and it shouldn't cause any breaking changes.

What is the motivation / use case for changing the behavior?

Sending files 📁 because there's definitely a use case for that.

I'd be more than happy to get to work on this and add it in, but I'd love to hear some feedback first.

[kamilmysliwiec]

Would you like to create a PR for this? :)

[jmcdo29]

You bet! I'll see what I can have by the end of the weekend

[kamilmysliwiec]

Let's track this in a single place, here #5278