nhb-toolbox/dist/esm/string/utilities.js

A versatile collection of smart, efficient, and reusable utility functions and classes for everyday development needs.

/**
 * * 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 const extractNumbersFromString = (input) => {
    return (input.match(/\d+/g) || [])?.map(Number);
};
/**
 * * Computes the Levenshtein distance between two strings.
 * @param a - First string.
 * @param b - Second string.
 * @returns The Levenshtein distance between the two strings.
 */
export const getLevenshteinDistance = (a, b) => {
    const lenA = a?.length;
    const lenB = b?.length;
    const dp = Array.from({ length: lenA + 1 }, (_, i) => Array.from({ length: lenB + 1 }, (_, j) => i === 0 ? j
        : j === 0 ? i
            : 0));
    for (let i = 1; i <= lenA; i++) {
        for (let j = 1; j <= lenB; j++) {
            dp[i][j] =
                a[i - 1] === b[j - 1] ?
                    dp[i - 1][j - 1]
                    : 1 + Math.min(dp[i - 1][j], dp[i][j - 1], dp[i - 1][j - 1]);
        }
    }
    return dp[lenA][lenB];
};
/**
 * * 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 function countWords(text) {
    return (text?.match(/\p{L}[\p{L}\p{M}\p{Pd}'’]*|\p{N}+/gu) || [])?.length;
}