Upload files with Multer & NestJS

multer.midleware.ts

import { Middleware, NestMiddleware } from '@nestjs/common';
import { ExpressMiddleware } from '@nestjs/common/interfaces';
import * as multer from 'multer';

@Middleware(fields?)
export class MulterMiddleware implements NestMiddleware {
  resolve() {
    const storage = multer.diskStorage({
      destination(req, file, cb) {
        cb(null, './public/images');
      },
      filename(req, file, cb) {
        cb(null, file.originalname);
      },
    });

    const fileFilter = (req, file, cb) => {
      let extension = (file.originalname.split('.').pop())
      //Put here your custom validation for file extensións.
      // To accept the file pass `true`, like so:
      cb(null, true)
      // To reject this file pass `false` or throw Exception, like so:
      //cb(new HttpException ("File format is not valid", HttpStatus.BAD_REQUEST), false)
    }
    return multer({
      storage: storage,
      limits: {
        fileSize: 2097152//2 Megabytes
      },
      fileFilter: fileFilter
    }).fields(fields)
  }
}

ProfileModule.ts

import { Module, RequestMethod } from '@nestjs/common';
import { MiddlewaresConsumer, NestModule } from '@nestjs/common/interfaces';
import { TypeOrmModule } from '@nestjs/typeorm';
import { MulterMiddleware } from './../common/middleware/multer.middleware';

@Module({
  controllers: [..],
  components: [..]
})
export class ProfileModule implements NestModule {
  public configure(consumer: MiddlewaresConsumer) {
    consumer
      .apply(MulterMiddleware)
      .with([{ name: 'picture' }])
      .forRoutes(
        { path: '/profile', method: RequestMethod.POST },
        { path: '/profile/:id', method: RequestMethod.PUT }
      );
  }
}

Any example of using this please?

https://github.com/brocoders/nestjs-boilerplate