File upload (fastify)

I’m submitting a…

[ ] Regression 
[ ] Bug report
[ ] Feature request
[x] Documentation issue or request (new chapter/page)
[ ] Support request => Please do not submit support request here, instead post your question on Stack Overflow.

Current behavior

Expected behavior

https://github.com/nestjs/nest/issues/719

Minimal reproduction of the problem with instructions

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

Environment

For Tooling issues:
- Node version: XX  
- Platform:  

Others:

[Luby1917]

Just tried to “adapt” the fastify-multipart 😃 Thanks to @reyx for pointing out to the right direction

main.ts

  const fAdapt = new FastifyAdapter()
  fAdapt.register(require('fastify-multipart'))

  const app = await NestFactory.create<NestFastifyApplication>(
    AppModule,
    fAdapt,
  );

file.controller.ts

import * as fs from "fs";
import * as pump from "pump";
import { Controller, Post, Req, Res } from '@nestjs/common';

@Controller('files')
export class FilesController {
  @Post()
	upload(@Req() req, @Res() reply): void {		
		const mp = req.multipart(handler, function (err) {
			console.log('upload completed')
			reply.code(200).send()
		})
		function handler (field, file, filename, encoding, mimetype) {				
			pump(file, fs.createWriteStream('file')) //File path
		}
	}
}

[reyx]

Maybe this module can be adapted: https://github.com/fastify/fastify-multipart