gistfile1.ts

@Middleware()
export class MulterMiddleware implements NestMiddleware {
    resolve(): (req, res, next) => void {
        const upload = multer({ dest: "" });
        return upload.any();
    }
}

@Module({
    modules: [DatabaseModule, HttpExceptionModule, LoggerModule, StorageModule],
    controllers: [CatController],
    components: [
        CatService,
        { provide: CAT_REPOSITORY_TOKEN, useClass: CatMongodbRepository },
        ...catProviders
    ],
})
export class CatModule implements NestModule {
    configure(consumer: MiddlewaresConsumer): void {
        consumer.apply(MulterMiddleware).forRoutes(
            { path: '/cat/:id/cover', method: RequestMethod.POST }
        );
    }
}

@Controller('cat')
export class CatController {
    @Post(':id/cover')
    uploadCover(@Req() req, @Param('id') id){
        console.log(id);
        console.log(req.files);
    }
}