"use strict";
// string.js slugify drops non ascii chars so we have to
// use a custom implementation here
// eslint-disable-next-line no-control-regex
const rControl = /[\u0000-\u001f]/g;
const rSpecial = /[\s~`!@#$%^&*()\-_+=[\]{}|\\;:"'“”‘’–—<>,.?/]+/g;
const rCombining = /[\u0300-\u036F]/g;
module.exports = function slugify(str) {
    // Split accented characters into components
    return str.normalize('NFKD')
        // Remove accents
        .replace(rCombining, '')
        // Remove control characters
        .replace(rControl, '')
        // Replace special characters
        .replace(rSpecial, '-')
        // Remove continuous separators
        .replace(/\-{2,}/g, '-')
        // Remove prefixing and trailing separators
        .replace(/^\-+|\-+$/g, '')
        // ensure it doesn't start with a number (#121)
        .replace(/^(\d)/, '_$1')
        // lowercase
        .toLowerCase();
};