/**
 * AppState auto-tracker. Subscribes to RN's `AppState` change events
 * and emits:
 *
 *   - APP_PAUSE  when the host goes background / inactive. The send
 *     loop is woken right after the emit so any accumulated events
 *     get one more chance to ship before the OS suspends the process.
 *   - APP_RESUME when the host returns to active.
 *
 * Repeated transitions into the same logical state are coalesced: a
 * sequence of `inactive -> background` (iOS multitasking quirks)
 * emits exactly ONE APP_PAUSE, not two, because the tracker tracks
 * the last emitted phase and skips no-op transitions.
 */
import type { KeewanoTracker } from '../types/config';
import type { AppStateTrackerArgs } from './types/AppStateTracker';
declare class AppStateTracker implements KeewanoTracker {
    readonly name = "AppStateTracker";
    private readonly args;
    constructor(args: AppStateTrackerArgs);
    /**
     * Subscribe to RN AppState changes. Returns a no-op detach when
     * AppState is unavailable (Node test runner, broken shim).
     */
    attach(): () => void;
}
export type { AppStateTrackerArgs } from './types/AppStateTracker';
export { AppStateTracker };