Vietnamese slugify

slugify.js

const slugify = str => str
  .trim()
  .toLowerCase()
  .replace(/(á|à|ả|ã|ạ|â|ấ|ầ|ẩ|ậ|ă|ằ|ắ|ặ|ẳ|ẵ)/g, 'a')
  .replace(/(é|è|ẻ|ẽ|ẹ|ê|ế|ề|ể|ễ|ệ)/g, 'e')
  .replace(/(ó|ò|ỏ|õ|ọ|ơ|ờ|ớ|ở|ợ|ỡ|ô|ố|ồ|ổ|ộ)/g, 'o')
  .replace(/(í|ì|ỉ|ĩ|ị)/g, 'i')
  .replace(/(ú|ù|ủ|ũ|ụ|ư|ứ|ừ|ử|ự)/g, 'u')
  .replace(/(ý|ỳ|ỷ|ỹ|ỵ)/g, 'y')
  .replace(/(đ)/g, 'd')
  .replace(/[^\w\s]/g, '')   // Remove non-word characters
  .replace(/(\s)+/g, '-')    // Replace spaces with one hyphen
  .replace(/-+/g, '-')       // Remove duplicate hyphens