Leafo\ScssPhp\Compiler::libComparable PHP Method

    protected function libComparable($args)
    {
        list($number1, $number2) = $args;
        if (!isset($number1[0]) || $number1[0] !== Type::T_NUMBER || !isset($number2[0]) || $number2[0] !== Type::T_NUMBER) {
            $this->throwError('Invalid argument(s) for "comparable"');
            return;
        }
        $number1 = $number1->normalize();
        $number2 = $number2->normalize();
        return $number1[2] === $number2[2] || $number1->unitless() || $number2->unitless();
    }