Function getCacheDirectories

src/cache-utils.ts:209–222

(
  packageManagerInfo: PackageManagerInfo,
  cacheDependencyPath: string
)

 * @return list of files on which the cache depends
 */
export const getCacheDirectories = async (
  packageManagerInfo: PackageManagerInfo,
  cacheDependencyPath: string
): Promise<string[]> => {
  // For yarn, if cacheDependencyPath is set, ask information about cache folders in each project
  // folder satisfied by cacheDependencyPath https://github.com/actions/setup-node/issues/488
  if (packageManagerInfo.name === 'yarn' && cacheDependencyPath) {
    return getCacheDirectoriesFromCacheDependencyPath(
      packageManagerInfo,
      cacheDependencyPath
    );
  }
  return getCacheDirectoriesForRootProject(packageManagerInfo);
};

/**
 * A function to check if the directory is a yarn project configured to manage