/**
 * PuckDataCapture
 *
 * Captures Puck's actual current data after each React render and writes
 * it to an external ref. This is necessary because Puck's onChange fires
 * with data from the PREVIOUS render cycle (React state lags the DOM),
 * so onChange data is always one keystroke behind.
 *
 * By reading via usePuck after React commits, we get the true current state.
 * The ref is read by the realtime throttle callback at send time.
 *
 * Must be rendered inside the Puck component tree (e.g., via a plugin override).
 */
import type { PuckData } from '@pantheon-systems/css-client';
export interface PuckDataCaptureProps {
    /** Ref to write the latest Puck data to */
    dataRef: React.MutableRefObject<PuckData | null>;
    /** Optional callback when data changes (for triggering deferred sync) */
    onDataChange?: (data: PuckData) => void;
}
export declare function PuckDataCapture({ dataRef, onDataChange }: PuckDataCaptureProps): null;