📦 String & Date Utils

A lightweight JavaScript utility library providing commonly used string and date helper functions. Perfect for both frontend and backend applications.

🚀 Features 🧵 String Utilities

capitalize(str) – Capitalize the first letter

capitalizeWords(str) – Capitalize every word

trimSpaces(str) – Remove extra spaces

truncate(str, length) – Shorten long strings

isPalindrome(str) – Check if a string is a palindrome

reverseString(str) – Reverse a string

countWords(str) – Count words in a string

maskString(str, visibleChars) – Mask sensitive strings

⏱️ Date Utilities

isSameDay(date1, date2) – Check if two dates are the same

daysBetween(date1, date2) – Number of days between dates

addDays(date, days) – Add days to a date

getStartOfWeek(date) – Get Monday of the week

getEndOfWeek(date) – Get Sunday of the week

formatDate(date, separator) – Basic date formatting (YYYY-MM-DD)

📦 Installation npm install string-date-utils

(Replace with your actual package name.)

📚 Usage import { stringUtils, dateUtils } from "string-date-utils";

// String examples stringUtils.capitalize("hello world"); // "Hello world" stringUtils.capitalizeWords("hello world"); // "Hello World" stringUtils.truncate("This is a long text", 10); // "This is a..."

// Date examples dateUtils.formatDate(new Date()); // "2025-11-26" dateUtils.addDays(new Date(), 5); // Date + 5 days dateUtils.daysBetween(new Date(), new Date("2025-01-01"));

📁 Folder Structure src/ ├── string.js └── date.js index.js package.json README.md