Make a slug from string

makeSlug.ts

function makeSlug(value: string, separator?: string = '_'): string {
  const mapAccentsHex: any = {
    a : /[\xE0-\xE6]/g,
    A : /[\xC0-\xC6]/g,
    e : /[\xE8-\xEB]/g,
    E : /[\xC8-\xCB]/g,
    i : /[\xEC-\xEF]/g,
    I : /[\xCC-\xCF]/g,
    o : /[\xF2-\xF6]/g,
    O : /[\xD2-\xD6]/g,
    u : /[\xF9-\xFC]/g,
    U : /[\xD9-\xDC]/g,
    c : /\xE7/g,
    C : /\xC7/g,
    n : /\xF1/g,
    N : /\xD1/g,
  };

  for (let letter in mapAccentsHex) {
    let regularExpression = mapAccentsHex[letter];
    value = value.replace(regularExpression, letter);
  }

  value = value.toLowerCase();
  value = value.replace(/[^a-z0-9\-]/g, " ");

  value = value.replace(/ {2,}/g, " ");

  value = value.trim();
  value = value.replace(/\s/g, separator);

  return value;
}