public static function filterCoffeeScript(Node $node, $indent, $newLine)
    {

        if (!class_exists('CoffeeScript\\Compiler'))
            throw new Compiler\Exception(
                "Failed to compile CoffeeScript: "
                ."Please install the coffeescript/coffeescript composer package"
            );

        $js = \CoffeeScript\Compiler::compile($node->text(), [
            'header' => '',
            'filename' => 'Imported-at-('.$node->line.':'.$node->offset.').coffee'
        ]);

        return '<script>'.$newLine.$indent.$js.$newLine.$indent.'</script>';
    }