private function nodeJsCommand()
    {

        // todo check nodejs exists in windows os
        return true;
        $found = false;
        foreach (['node', 'nodejs'] as $command) {
            $this->process->setCommandLine('which ' . $command);
            $this->process->setTimeout(null);
            $this->process->run();

            if ($this->process->isSuccessful()) {
                $found = true;
                break;
            }
        }

        if (!$found) {
            $this->console->error('node.js was not found');
            $this->errors =  true;
        }
    }