export { default } from "./ExpoNotificationServiceExtensionModule";
export * from "./ExpoNotificationServiceExtension.types";
import type { NotificationExtensionConfig, ValidationResult } from "./ExpoNotificationServiceExtension.types";
/**
 * Configure the Notification Service Extension with payload key mappings.
 * Must be called at least once before push notifications can be enhanced.
 * Writes the config to the shared App Group container.
 */
export declare function configureNotificationExtension(config: NotificationExtensionConfig): void;
/**
 * Pre-download and cache an avatar image in the shared App Group container.
 * The NSE will use the cached version instead of downloading at notification time.
 *
 * @param url - The avatar image URL.
 * @param id - A stable identifier for the sender or group (used as cache key).
 */
export declare function prefetchAvatar(url: string, id: string): Promise<void>;
/**
 * Delete all cached avatar images from the App Group container.
 */
export declare function clearAvatarCache(): Promise<void>;
/**
 * Run diagnostics to verify the extension is correctly configured.
 * Optionally pass a sample push payload to dry-run key extraction.
 *
 * @param samplePayload - Optional sample push payload object to test key mapping.
 */
export declare function validateSetup(samplePayload?: Record<string, unknown>): Promise<ValidationResult>;
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