code: function split(delim, val){
    utils.assertString(delim, 'delimiter');
    utils.assertString(val, 'val');
    var splitted = val.string.split(delim.string);
    var expr = new nodes.Expression();
    var ItemNode = val instanceof nodes.Ident
      ? nodes.Ident
      : nodes.String;
    for (var i = 0, len = splitted.length; i < len; ++i) {
      expr.nodes.push(new ItemNode(splitted[i]));
    }
    return expr;
  }
docs: Splits the given `val` by `delim`
  
  @param {String} delim
  @param {String|Ident} val
  @return {Expression}
  @api public