fbjs/lib/PhotosMimeType.js.flow

A collection of utility libraries used by other Facebook JS projects

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @providesModule PhotosMimeType
 */
const PhotosMimeType = {
  isImage(mimeString) {
    return getParts(mimeString)[0] === 'image';
  },

  isJpeg(mimeString) {
    const parts = getParts(mimeString);
    return PhotosMimeType.isImage(mimeString) && ( // see http://fburl.com/10972194
    parts[1] === 'jpeg' || parts[1] === 'pjpeg');
  }

};

function getParts(mimeString) {
  return mimeString.split('/');
}

module.exports = PhotosMimeType;