*/
private $cachedPolyfillPackages = null;
/**
* @return array
*/
public function provide() : array
{
// disable cache in tests
if (SimpleParameterProvider::hasParameter(Option::POLYFILL_PACKAGES)) {
return SimpleParameterProvider::provideArrayParameter(Option::POLYFILL_PACKAGES);
}
// already cached, even only empty array
if ($this->cachedPolyfillPackages !== null) {
return $this->cachedPolyfillPackages;
}
$projectComposerJson = \getcwd() . '/composer.json';
if (!\file_exists($projectComposerJson)) {
$this->cachedPolyfillPackages = [];
return $this->cachedPolyfillPackages;
}
$composerContents = FileSystem::read($projectComposerJson);
$composerJson = Json::decode($composerContents, \true);
$this->cachedPolyfillPackages = $this->filterPolyfillPackages($composerJson['require'] ?? []);
return $this->cachedPolyfillPackages;
}
/**
* @param array $require
* @return array
*/
private function filterPolyfillPackages(array $require) : array
{
return \array_filter(\array_keys($require), static function (string $packageName) : bool {
return \strncmp($packageName, 'symfony/polyfill-', \strlen('symfony/polyfill-')) === 0;
});
}
}