Native SassScript function for splitting strings on a given delimiter

str-split.scss

@function str-split($str, $del: ", ") {
  $delimiter-length: str-length($del);
  $delimiter-start-index: str-index($str, $del);
  @if $delimiter-start-index != null {
    $list-item: str-slice($str, 1, $delimiter-start-index - 1);
    $rest-of-string: str-slice($str, $delimiter-start-index + $delimiter-length);
    @return $list-item, str-to-list($rest-of-string, $del);
  }
  @else {
    @return $str;
  }
}