import { type ReactNode } from 'react';
/**
 * Generates a stable key for a `ReactNode`. Useful for detecting when arbitrary content has
 * meaningfully changed.
 *
 * @param reactNode - Any React node (element, string, number, array, etc.)
 * @returns A string key that uniquely identifies the node structure and content.
 */
export declare function getReactNodeKey(reactNode: ReactNode): string;
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