ComposerFactory example

$composerJsonPath = $composerJsonDir . '/composer.json';

        $json = json_decode((string) file_get_contents($composerJsonPath), true, \JSON_THROW_ON_ERROR);

        $previousRootVersion = EnvironmentHelper::hasVariable('COMPOSER_ROOT_VERSION') ? EnvironmentHelper::getVariable('COMPOSER_ROOT_VERSION') : null;

        // This is a workaround to make sure that the shopware platform package has the correct version         if (($json['name'] ?? '') === 'shopware/platform' && !isset($json['version']) && !EnvironmentHelper::hasVariable('COMPOSER_ROOT_VERSION')) {
            $_SERVER['COMPOSER_ROOT_VERSION'] = Kernel::SHOPWARE_FALLBACK_VERSION;
        }

        $composer = (new ComposerFactory())->createComposer(
            $composerIO,
            $composerJsonPath,
            false,
            $composerJsonDir
        );

        if ($previousRootVersion === null) {
            unset($_SERVER['COMPOSER_ROOT_VERSION']);
        } else {
            $_SERVER['COMPOSER_ROOT_VERSION'] = $previousRootVersion;
        }