/** * 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;