export interface UseZoomReturn {
    /**
     * Current zoom level as reported by the web runtime via VIEW_CHANGED.
     * `null` before the viewer is initialised or if VIEW_CHANGED hasn't fired.
     */
    zoom: number | null;
    /**
     * Current map center [lat, lng] as reported by the web runtime.
     * `null` before the first VIEW_CHANGED event.
     */
    center: [number, number] | null;
    /**
     * Pan and zoom the map to the given position.
     *
     * @param center - Map center as [latitude, longitude].
     * @param zoom - Target zoom level.
     */
    setView: (center: [number, number], zoom: number) => void;
}
/**
 * Hook to read the current zoom / pan state and control the map view.
 *
 * Zoom and center are kept in sync with the web runtime via VIEW_CHANGED
 * bridge messages that `EdgePDFViewer` writes back to the context.
 *
 * @example
 * ```tsx
 * function ZoomDisplay() {
 *   const { zoom, center, setView } = useZoom();
 *
 *   return (
 *     <View>
 *       <Text>Zoom: {zoom ?? '…'}</Text>
 *       <Button title="Reset" onPress={() => setView([0, 0], 1)} />
 *     </View>
 *   );
 * }
 * ```
 */
export declare function useZoom(): UseZoomReturn;
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