/**
 * Per-frame task coalescing for pointer-driven interactions.
 *
 * Pointer streams fire several times faster than the display refresh, and
 * applying every event (a React setState, a store reduce) re-renders whole
 * trees at event cadence — the visible drag lag on slower CPUs (#315). This
 * batcher keeps the LATEST scheduled task, runs it at most once per
 * animation frame, and lets the caller flush synchronously on release (so
 * the final pointer position is never lost to a cancelled frame).
 *
 * Callers compose the pending value in a ref before scheduling; the
 * scheduled task reads that ref, so replacing the task on every event is
 * cheap (one ref write + one rAF check).
 */
export interface FrameBatcher {
    /** Schedule (or replace) the per-frame task. Safe to call on every event. */
    schedule(task: () => void): void;
    /** Cancel any pending frame and run the scheduled task synchronously
     *  (no-op when nothing is scheduled). */
    flushNow(): void;
    /** Cancel any pending frame and drop the task without running it. */
    dispose(): void;
}
export declare function createFrameBatcher(): FrameBatcher;