react-native/Libraries/Image/RCTImageLoader.h

/**
 * Copyright (c) 2015-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

#import <Foundation/Foundation.h>

@class ALAssetsLibrary;
@class UIImage;

@interface RCTImageLoader : NSObject

+ (ALAssetsLibrary *)assetsLibrary;

/**
 * Can be called from any thread.
 * Will always call callback on main thread.
 */
+ (void)loadImageWithTag:(NSString *)tag
                callback:(void (^)(NSError *error, id /* UIImage or CAAnimation */ image))callback;

@end