ts-prime/src/slugify.ts

A utility library for JavaScript and Typescript.

import { normalizeString } from './normalizeString';

/**
 * Converts any string to slug
 * @param str the string
 * @signature
 *    P.slugify(str);
 * @example
 *    P.slugify("Super ball cup") // => super-ball-cup
 * @category String
 */
export function slugify(str: string) {
  const qw = str
    .split(' ')
    .map(q => normalizeString(q))
    .join('-');
  str = qw.replace(/^\s+|\s+$/g, '');

  // Make the string lowercase
  str = str.toLowerCase();

  // Remove accents, swap ñ for n, etc
  var from =
    'ÁÄÂÀÃÅČÇĆĎÉĚËÈÊẼĔȆÍÌÎÏŇÑÓÖÒÔÕØŘŔŠŤÚŮÜÙÛÝŸŽáäâàãåčçćďéěëèêẽĕȇíìîïňñóöòôõøðřŕšťúůüùûýÿžþÞĐđßÆa·/_,:;';
  var to =
    'AAAAAACCCDEEEEEEEEIIIINNOOOOOORRSTUUUUUYYZaaaaaacccdeeeeeeeeiiiinnooooooorrstuuuuuyyzbBDdBAa------';
  for (var i = 0, l = from.length; i < l; i++) {
    str = str.replace(new RegExp(from.charAt(i), 'g'), to.charAt(i));
  }

  // Remove invalid chars
  str = str
    .replace(/[^a-z0-9 -]/g, '')
    // Collapse whitespace and replace by -
    .replace(/\s+/g, '-')
    // Collapse dashes
    .replace(/-+/g, '-');

  if (str[str.length - 1] === '-') {
    return str.slice(0, str.length - 1);
  }
  return str;
}