Multer media

Installation

$ yarn add multer-media

Usage

  const upload = multer({
      storage: multerMedia({
        algorithm: 'md5',
        
        destination: (
          req: ExpressRequest,
          file: Express.Multer.File,
          callback: (error: Error | null, path: string) => void,
        ) => {
          callback(null, '/tmp/my-uploads');
        },
        
        filename: (
          req: ExpressRequest,
          file: Express.Multer.File,
          callback: (error: Error | null, path: string) => void,
        ) => {
          const uniqueSuffix = Date.now() + '-' + Math.round(Math.random() * 1E9)
          callback(null, file.fieldname + '-' + uniqueSuffix);
        },

        /**
         * A function that will be executed on start
         *
         * @param req The Express `Request` object.
         * @param file Object containing information about the processed file.
         * @param src Stream Readable
         */
        start?: (
          req: Request,
          file: Express.Multer.File,
          outStream?: stream.Writable,
          chunk?: any,
          encoding?: BufferEncoding,
        ) => {},

        /**
         * A function that will be executed on write events
         *
         * @param req The Express `Request` object.
         * @param file Object containing information about the processed file.
         * @param src Stream Readable
         */
        write?: (
          req: Request,
          file: Express.Multer.File,
          outStream?: stream.Writable,
          chunk?: any,
          encoding?: BufferEncoding,
        ) => {},

        /**
         * A function that will be executed on write events
         *
         * @param req The Express `Request` object.
         * @param file Object containing information about the processed file.
         * @param src Stream Readable
         */
        finish?: (
          req: Request,
          file: Express.Multer.File,
          outStream?: stream.Writable,
          chunk?: any,
          encoding?: BufferEncoding,
        ) => {},
      }),
  });

API

File information

Each file contains the following information:

Key | Type | Description --- | --- | --- fieldname | string | Field name specified in the form | originalname | string | Name of the file on the user's computer | encoding | string | Encoding type of the file | mimetype | string | Mime type of the file | size | number | Size of the file in bytes | destination | string | The folder to which the file has been saved | filename | string | The name of the file within the destination path | string | The full path to the uploaded file hash | string | Hash with algorithm the file media | FfprobeData | Media probe of this file, using ffmpeg-static