import { type RefObject } from 'react';
import type { View } from 'react-native';
export type BoundingClientRect = {
    x: number;
    y: number;
    width: number;
    height: number;
    left: number;
    right: number;
    top: number;
    bottom: number;
};
/**
 * A custom hook that retrieves the bounding client rectangle of a given `ref` element
 * and invokes a handler function with the layout information.
 *
 * This hook is designed to work with React Native's Fabric architecture and provides
 * support for both `unstable_getBoundingClientRect` and `getBoundingClientRect` methods.
 *
 * @param ref - A `RefObject` pointing to a `View` or `null`. The bounding client rectangle
 *              will be retrieved from this reference.
 * @param handler - A callback function that will be invoked with the layout information
 *                  of the referenced element.
 *
 * @remarks
 * - The hook uses `useLayoutEffect` to ensure the layout information is retrieved
 *   after the DOM updates.
 * - The `isFabricInstalled` function is used to determine if the Fabric architecture
 *   is available.
 * - The `unstable_getBoundingClientRect` method is used if available, falling back
 *   to `getBoundingClientRect` otherwise.
 *
 * @example
 * ```tsx
 * const ref = useRef<View | null>(null);
 * useBoundingClientRect(ref, (layout) => {
 *   console.log('Bounding client rect:', layout);
 * });
 * ```
 */
export declare function useBoundingClientRect(ref: RefObject<View | null>, handler: (layout: BoundingClientRect) => void): void;
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