import { ReactNode } from 'react';
/**
 * Recursively extracts text content from React children nodes.
 *
 * Features:
 * - Converts React children to plain text string
 * - Handles all React node types (strings, numbers, booleans, arrays, elements)
 * - Recursively processes nested React elements
 * - Extracts text from element children props
 * - Handles empty and null children gracefully
 * - Joins array children into single string
 * - Filters out non-text content automatically
 * - Returns empty string for unsupported node types
 *
 * Supported Node Types:
 * - String, number, boolean (converted to string)
 * - React elements (extracts children recursively)
 * - Arrays (processes each item and joins)
 * - Null, undefined (returns empty string)
 * - Objects (returns empty string)
 *
 * @param node - React node to convert to string
 * @returns Extracted text content as string, or empty string if no text content
 */
export declare function childrenToString(node: ReactNode | object): string;