import { TimelineStateSnapshot } from "@techsquidtv/canvas-timeline-core";
//#region src/hooks/core/useTimelineSelector.d.ts
/**
 * Selects a value from the engine's immutable, settled state snapshot.
 *
 * @remarks
 * Primitive results use Object.is; arrays and plain objects compare their own
 * enumerable fields shallowly. Supply isEqual for another selection policy.
 * This hook excludes per-frame playback and edit-preview updates. Use
 * {@link useTimelinePlayheadTime} for a live playback readout.
 *
 * @param selector - Pure projection of the readonly timeline snapshot.
 * @param isEqual - Equality check used to preserve the last selected value.
 * @template Value - Selected value, including primitive values.
 * @returns The selected value, updated only when its equality check changes.
 * @example
 * ```tsx
 * import { useTimelineSelector } from '@techsquidtv/canvas-timeline-react';
 * export function TrackCount() {
 *   const count = useTimelineSelector(state => state.tracks.length);
 *   return <output>{count}</output>;
 * }
 * ```
 */
declare function useTimelineSelector<Value>(selector: (state: TimelineStateSnapshot) => Value, isEqual?: (previous: Value, next: Value) => boolean): Value;
//#endregion
export { useTimelineSelector };
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