How to use the lerna/lib/PackageUtilities.getPackages function in lerna

function getAllPackages() {
    const repository = new Repository();
    return PackageUtilities.getPackages(repository);
}

const getAllPackages = function () {
  const Repository = require('lerna/lib/Repository');
  const PackageUtilities = require('lerna/lib/PackageUtilities');

  return PackageUtilities.getPackages(new Repository());
};

function loadPackages({log = npmlog, packageConfigs} = {log: npmlog}) {
  const repo = new Repository()
  const effectivePackageConfigs = packageConfigs || repo.packageConfigs
  if (packageConfigs) {
    log.verbose('loadPackages', 'using provided packageConfigs', {
      packageConfigs: effectivePackageConfigs
    })
  } else {
    log.verbose('loadPackages', 'using default packageConfigs', {
      packageConfigs: effectivePackageConfigs
    })
  }

  const loadedPackages = PackageUtilities.getPackages({
    rootPath: repo.rootPath,
    packageConfigs: effectivePackageConfigs
  })

  const batched = PackageUtilities.topologicallyBatchPackages(loadedPackages)
  return _.flatten(batched)
}