@ts-utilkit/string

string Functions - TypeScript utility functions for string operations.

Installation

npm install @ts-utilkit/string

Features

• 🚀 TypeScript-first with complete type definitions
• ✅ Comprehensive test coverage (>95%)
• 📦 Tree-shakeable ESM and CommonJS support
• 🔒 Type-safe with strict TypeScript configuration
• 📖 Extensive JSDoc documentation

Available Functions (51)

• areAnagrams - Check if two strings are anagrams
• capitalizeEachWord - Capitalize first letter of each word
• capitalizeFirstLetter - Capitalize first letter of string
• capitalizeNthLetter - Capitalize specific letter at index n
• countCharacterOccurrences - Count occurrences of a character
• countConsonants - Count consonants in string
• countSubstring - Count substring occurrences
• countVowels - Count vowels in string
• countWords - Count words in string
• endsWith - Check if string ends with substring
• escapeRegex - Escape special regex characters
• extractSubstring - Extract substring by indices
• findLongestWord - Find longest word in string
• firstNonRepeatingCharacter - Find first non-repeating character
• generateRandomAlphanumeric - Generate random alphanumeric string
• generateRandomString - Generate random string
• getFileExtension - Get file extension from filename
• hasLowercase - Check if string has lowercase letters
• hasUppercase - Check if string has uppercase letters
• indexOfSubstring - Find index of substring
• isAlpha - Check if string contains only letters
• isAlphanumeric - Check if string is alphanumeric
• isNumeric - Check if string is numeric
• isPalindrome - Check if string is palindrome
• isValidEmail - Validate email format
• isWhitespace - Check if string is whitespace only
• lastIndexOfSubstring - Find last index of substring
• padString - Pad string to specified length
• removeWhitespace - Remove all whitespace
• repeatString - Repeat string n times
• repeatUntilLength - Repeat string until reaches length
• replaceFirst - Replace first occurrence
• replaceMultiple - Replace multiple substrings at once
• replaceSubstring - Replace substring with another
• reverseString - Reverse string
• reverseWords - Reverse word order
• slugify - Convert string to URL-friendly slug
• splitString - Split string by delimiter
• startsWith - Check if string starts with substring
• stringToBoolean - Convert string to boolean
• stringToNumber - Convert string to number
• stringToWords - Split string into words array
• stripHtmlTags - Remove HTML tags from string
• toKebabCase - Convert to kebab-case
• toLowerCase - Convert to lowercase
• toSnakeCase - Convert to snake_case
• toUpperCase - Convert to uppercase
• trimWhitespace - Trim leading/trailing whitespace
• truncateString - Truncate string to max length
• uniqueCharacters - Get unique characters as array
• wordsToSentence - Join words into sentence

Quick Example

import {
  slugify,
  capitalizeFirstLetter,
  isPalindrome,
  truncate,
} from '@ts-utilkit/string';

slugify('Hello World!'); // 'hello-world'
capitalizeFirstLetter('hello'); // 'Hello'
isPalindrome('racecar'); // true
truncate('Long text...', 10); // 'Long text...'

License

MIT © Mykyta Forofontov

Contributing

Contributions are welcome! Please see the main repository for contribution guidelines.