/**
 * * Extracts all numbers from a string as array of numbers.
 * @param input - The string to extract numbers from.
 * @returns An array of numbers found in the string.
 */
export declare const extractNumbersFromString: (input: string) => number[];
/**
 * * Computes the Levenshtein distance between two strings (space optimized).
 * @param str1 - First string to compare.
 * @param str2 - Second string to compare.
 * @returns The Levenshtein distance between the two strings.
 *
 * @remarks
 * - The Levenshtein distance is the minimum number of single-character edits (insertions, deletions, or substitutions) required to change one string into the other.
 * - This implementation uses only O(min(len(a), len(b))) space by keeping only the current and previous rows of the distance matrix.
 *
 * @example
 * const distance = getLevenshteinDistance('kitten', 'sitting');
 * console.log(distance); // Output: 3
 */
export declare const getLevenshteinDistance: (str1: string, str2: string) => number;
/**
 * * Counts the number of words in a string, supporting multiple languages and scripts.
 *
 * @param text - The input string to count words from.
 * @returns Number of words (Unicode-aware).
 */
export declare function countWords(text: string): number;