Eloquent\Composer\NpmBridge\NpmClient::install PHP Метод

    public function install($path = null, $isDevMode = null)
    {
        if (null === $isDevMode) {
            $isDevMode = true;
        }
        if ($isDevMode) {
            $arguments = array('install');
        } else {
            $arguments = array('install', '--production');
        }
        $this->executeNpm($arguments, $path);
    }