import { type TAnyFeature } from 'feature-core';
import type { TState } from 'feature-state';
/**
 * Returns the current value of a state and re-renders the component on each change.
 *
 * Pass `null` or `undefined` to opt out: the hook returns `null` and registers no listener.
 * Background updates mark the change for the next render without forcing an immediate re-render.
 */
export declare function useFeatureState<GState extends TAnyFeatureState>(state: GState): TFeatureStateValue<GState>;
type TAnyFeatureState = TState<any, TAnyFeature[]> | null | undefined;
type TFeatureStateValue<GState> = GState extends TState<infer GValue, TAnyFeature[]> ? GValue : null;
export {};