file upload controller.ts

  @Post('upload')
  @UseInterceptors(FileInterceptor('file'))
  async uploadFile(
    @UploadedFile() file: Express.Multer.File,
    @Request() req,
  ): Promise<any> {
    const result = await this.fileservice.uploadPublicFile(
      file.buffer,
      file.originalname,
    );
    return new ResponseModel(result); 
  }