js slugify.js

const _slugify = str => {
  str = str.toLowerCase();

  str = str.replace(/[^a-z0-9 -]/g, '') // remove invalid chars
    .trim() // remove starting or ending whitespace before replacing whitespace
    .replace(/\s+/g, '-') // collapse whitespace and replace by -
    .replace(/-+/g, '-'); // collapse dashes
  return str;
}