Function getPackageMap

lib/internal/modules/package_map.js:260–282

* Get the singleton package map, initializing on first call. * @returns {PackageMap|null}

()

 * @returns {PackageMap|null}
 */
function getPackageMap() {
  if (packageMap !== undefined) { return packageMap; }

  packageMapPath = getPackageMapPath();
  if (!packageMapPath) {
    packageMap = null;
    return null;
  }

  emitExperimentalWarning('Package maps');

  try {
    packageMap = loadPackageMap(pathResolve(packageMapPath));
  } catch (err) {
    // Fallback to an empty package map to avoid repeatedly trying
    // to load the broken package map file. Subsequent resolutions
    // will still fail to resolve due to the package map being empty.
    packageMap = new PackageMap(packageMapPath, { packages: {} });
    throw err;
  }

  return packageMap;
}

/**
 * Check if the package map is enabled.