Function projectHasYarnBerryManagedDependencies

src/cache-utils.ts:234–266

(
  directory: string
)

 *  - return true otherwise
 */
const projectHasYarnBerryManagedDependencies = async (
  directory: string
): Promise<boolean> => {
  const workDir = directory || process.env.GITHUB_WORKSPACE || '.';
  core.debug(`check if "${workDir}" has locally managed yarn3 dependencies`);

  // if .yarn/cache directory exists the cache is managed by version control system
  const yarnCacheFile = path.join(workDir, '.yarn', 'cache');
  if (
    fs.existsSync(yarnCacheFile) &&
    fs.lstatSync(yarnCacheFile).isDirectory()
  ) {
    core.debug(
      `"${workDir}" has .yarn/cache - dependencies are kept in the repository`
    );
    return Promise.resolve(false);
  }

  // NOTE: yarn1 returns 'undefined' with return code = 0
  const enableGlobalCache = await getCommandOutput(
    'yarn config get enableGlobalCache',
    workDir
  );
  // only local cache is not managed by yarn
  const managed = enableGlobalCache.includes('false');
  if (managed) {
    core.debug(`"${workDir}" dependencies are managed by yarn 3 locally`);
    return true;
  } else {
    core.debug(`"${workDir}" dependencies are not managed by yarn 3 locally`);
    return false;
  }
};

/**
 * A function to report the repo contains Yarn managed projects