$store .= static::$simpleMap[$reader->name];
} else if ($reader->name == 'list') {
--$listLevel;
- $listPrefix = str_repeat(' ', $listLevel);
+ $listPrefix = str_repeat(
+ ' ', $listLevel < 0 ? 0 : $listLevel
+ );
if ($listLevel == -1) {
$store .= "\n";
}