Function getNearestParentPackageJSON

lib/internal/modules/package_json_reader.js:167–185

* Get the nearest parent package.json file from a given path. * Return the package.json data and the path to the package.json file, or undefined. * @param {string} checkPath The path to start searching from. * @returns {undefined | DeserializedPackageConfig}

(checkPath)

 * @returns {undefined | DeserializedPackageConfig}
 */
function getNearestParentPackageJSON(checkPath) {
  const parentPackageJSONPath = moduleToParentPackageJSONCache.get(checkPath);
  if (parentPackageJSONPath !== undefined) {
    return deserializedPackageJSONCache.get(parentPackageJSONPath);
  }

  const result = modulesBinding.getNearestParentPackageJSON(checkPath);
  const packageConfig = deserializePackageJSON(checkPath, result);

  moduleToParentPackageJSONCache.set(checkPath, packageConfig.path);

  const maybeCachedPackageConfig = deserializedPackageJSONCache.get(packageConfig.path);
  if (maybeCachedPackageConfig !== undefined) {
    return maybeCachedPackageConfig;
  }

  deserializedPackageJSONCache.set(packageConfig.path, packageConfig);
  return packageConfig;
}

/**
 * Returns the package configuration for the given resolved URL.