import { Dispatch } from 'react';
import { AppSharedState } from '../appState/state.models';
import { OneOfStateActions } from '../appState/state.models.actions';
/**
 * Hook exposing shared app state + a (stable) dispatch with optional logging.
 *
 * Issue (root cause of previous crash):
 * - Earlier "logger" version wrapped the original context dispatch in an inline function on every render.
 * - Components (e.g. map setup) had `dispatch` in a `useEffect` dependency array.
 * - Each render produced a new function identity ⇒ effect re-ran unnecessarily.
 * - Cleanup of the previous effect removed maps / mapSets before the new effect finished re‑adding them.
 * - Concurrently, other actions expected the map to exist ⇒ `Map with key ... not found`.
 * - React 18 StrictMode double invoke on mount amplified the window where state was inconsistent.
 *
 * Fixes applied here:
 * 1. `dispatchWithLog` wrapped in `useCallback` ⇒ stable identity unless logging flag or underlying dispatch changes.
 * 2. Returned tuple `[state, dispatch]` memoized with `useMemo` ⇒ consumer effects not retriggered by wrapper recreation.
 * 3. Previous state stored in a ref for before/after logging without causing re-renders.
 *
 * Logging behavior:
 * - Before dispatch: prints previous state + action (when enabled).
 * - After render (state change observed): prints current state.
 *
 * Safe usage:
 * const [state, dispatch] = useSharedState(true); // enable logging
 */
export declare const useSharedState: <AppSpecificState extends AppSharedState, AppSpecificActions = OneOfStateActions>(logSharedState?: boolean) => [AppSpecificState, Dispatch<AppSpecificActions>];