/** * Remove blank lines. * * @param string $source * @param Isolator $isolator * @return string */ protected function normalizeEndings($source, Isolator $isolator) { //Step #1, \n only $source = $isolator->isolatePHP(Strings::normalizeEndings($source)); //Step #2, chunk by lines $sourceLines = explode("\n", $source); //Step #3, no blank lines and html comments (will keep conditional commends) $sourceLines = array_filter($sourceLines, function ($line) { return trim($line); }); $source = $isolator->repairPHP(join("\n", $sourceLines)); $isolator->reset(); return $source; }