text: export function slugify (str) {
      str = str.replace(/^\s+|\s+$/g, ''); // trim
      str = str.toLowerCase();
    
      // remove accents, swap ñ for n, etc
      var from = "àáäâèéëêìíïîòóöôùúüûñç·/_,:;";
      var to   = "aaaaeeeeiiiioooouuuunc------";
      for (var i=0, l=from.length ; i<l ; i++) {
          str = str.replace(new RegExp(from.charAt(i), 'g'), to.charAt(i));
      }
  
      str = str.replace(/[^a-z0-9 -]/g, '') // remove invalid chars
          .replace(/\s+/g, '-') // collapse whitespace and replace by -
          .replace(/-+/g, '-'); // collapse dashes
  
      return str;
  }