@c_s_v_s_subrahmanyam/string-utils/src/utils/validators.js

A comprehensive utility library for advanced string operations.

// Validators for strings
module.exports = {
    isEmail: (str) => /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(str),
  
    isURL: (str) =>
      /^(https?:\/\/)?([\w\d-]+\.){1,}\w{2,}(\/[\w\d-_.]*)*\/?$/.test(str),
  
    isPalindrome: (str) => {
      const cleaned = str.replace(/[^a-zA-Z0-9]/g, '').toLowerCase();
      return cleaned === cleaned.split('').reverse().join('');
    },
  
    isAlphanumeric: (str) => /^[a-zA-Z0-9]+$/.test(str),
  
    isDigit: (str) => /^\d+$/.test(str),
  
    isSpace: (str) => /^\s+$/.test(str),
  
    passwordStrength: (password) => {
      if (password.length < 8) return 'Weak';
      if (!/[A-Z]/.test(password)) return 'Medium';
      if (!/[0-9]/.test(password)) return 'Medium';
      if (!/[!@#$%^&*]/.test(password)) return 'Medium';
      return 'Strong';
    },
  };