/**
 * Subscribes to a CSS media query (web) or Dimensions changes (native) and
 * returns whether the query currently matches.
 *
 * On web: uses `window.matchMedia(query)`.
 * On native: parses `(min-width: Npx)` / `(max-width: Npx)` and watches
 * `Dimensions.addEventListener('change')`. Other CSS features are returned as
 * the `initialValue` since RN can't evaluate them.
 *
 * @example
 * const isCompact = useMediaQuery('(max-width: 640px)');
 * return isCompact ? <Drawer /> : <Sidebar />;
 */
export declare function useMediaQuery(query: string, initialValue?: boolean): boolean;