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<?php
namespace Drupal\Core\Asset;
/**
* Resolves the dependencies of asset (CSS/JavaScript) libraries.
*/
interface LibraryDependencyResolverInterface {
/**
* Gets the given libraries with their dependencies.
*
* Given ['core/a', 'core/b', 'core/c'], with core/a depending on core/c and
* core/b on core/d, returns ['core/a', 'core/b', 'core/c', 'core/d'].
*
* @param string[] $libraries
* A list of libraries, in the order they should be loaded.
*
* @return string[]
* A list of libraries, in the order they should be loaded, including their
* dependencies.
*/
public function getLibrariesWithDependencies(array $libraries);
/**
* Gets the minimal representative subset of the given libraries.
*
* A minimal representative subset means that any library in the given set of
* libraries that is a dependency of another library in the set, is removed.
*
* Hence a minimal representative subset is the most compact representation
* possible of a set of libraries.
*
* (Each asset library has dependencies and can therefore be seen as a tree.
* Hence the given list of libraries represent a forest. This function returns
* all roots of trees that are not a subtree of another tree in the forest.)
*
* @param string[] $libraries
* A set of libraries.
*
* @return string[]
* A representative subset of the given set of libraries.
*/
public function getMinimalRepresentativeSubset(array $libraries);
}
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