react-native/Libraries/Image/NativeImageLoader.js

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow
 * @format
 */

'use strict';

import type {TurboModule} from '../TurboModule/RCTExport';
import * as TurboModuleRegistry from '../TurboModule/TurboModuleRegistry';

export interface Spec extends TurboModule {
  +getConstants: () => {||};
  // Return [width, height] of image uri
  +getSize: (uri: string) => Promise<$ReadOnlyArray<number>>;
  +getSizeWithHeaders: (
    uri: string,
    headers: {[string]: string},
  ) => Promise<$ReadOnly<{width: number, height: number}>>;
  +prefetchImage: (uri: string) => Promise<boolean>;
  +queryCache: (
    uris: Array<string>,
  ) => Promise<{[string]: 'memory' | 'disk' | 'disk/memory'}>;
}

export default (TurboModuleRegistry.getEnforcing<Spec>('ImageLoader'): Spec);