import type { HandleBinaryVersionMismatchCallback, RemotePackage } from './types';
/**
 * Asks the CodePush service whether the configured app release channel has an update available.
 *
 * @param releaseChannelPublicId The release channel public ID to use to query the CodePush server for an update.
 * @param handleBinaryVersionMismatchCallback An optional callback for handling target binary version mismatch
 * @param deviceId Optional custom device ID (client unique ID) to use for this request
 * @param serverUrl Optional custom server URL to use for checking updates
 */
export declare function checkForUpdate(releaseChannelPublicId?: string, handleBinaryVersionMismatchCallback?: HandleBinaryVersionMismatchCallback, deviceId?: string, serverUrl?: string): Promise<RemotePackage | null>;
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