function InstallationManager::isPackageInstalled

Checks whether provided package is installed in one of the registered installers.

Parameters

InstalledRepositoryInterface $repo repository in which to check:

PackageInterface $package package instance:

File

vendor/composer/composer/src/Composer/Installer/InstallationManager.php, line 142

Class

InstallationManager

Package operation manager.

Namespace

Composer\Installer

Code

public function isPackageInstalled(InstalledRepositoryInterface $repo, PackageInterface $package) : bool {
    if ($package instanceof AliasPackage) {
        return $repo->hasPackage($package) && $this->isPackageInstalled($repo, $package->getAliasOf());
    }
    return $this->getInstaller($package->getType())
        ->isInstalled($repo, $package);
}