import { ProjectGraph, Tree } from '@nx/devkit';
/**
 * Populates mapping caches between package names and project names for library projects within a given project graph.
 *
 * This function iterates over all projects in the provided project graph. For each project that is identified as a library (`lib`),
 * it checks if a `package.json` file exists in the project's root directory. If the file exists, the function reads the package name
 * from the `package.json` and updates two caches: one mapping from package names to project names, and another from project names to package names.
 *
 * @param {Tree} tree - The file system abstraction that provides methods to read and check existence of files.
 * @param {ProjectGraph} projectGraph - An object representing the project graph which includes nodes where each node represents a project.
 *
 * Note: This function relies on global caches `GENERATOR_PACKAGE_NAME_TO_PROJECT_NAME_CACHE` and `GENERATOR_PROJECT_NAME_TO_PACKAGE_NAME_CACHE`
 * to store the mappings. It assumes these caches are already initialized and available in the global scope.
 */
export declare function LoadProjectToPackageMapping(tree: Tree, projectGraph: ProjectGraph): void;
/**
 * Converts a package name to a corresponding project name using a predefined cache.
 *
 * This function looks up a given package name in a cache to find the associated project name.
 * If the cache has not been initialized, it throws an error indicating that the cache is not loaded.
 * If the package name is not found in the cache, it throws an error specifying that the project
 * for the given package could not be found.
 *
 * @param {string} packageName - The name of the package to convert to a project name.
 * @returns {string} The project name associated with the given package name.
 * @throws {Error} If the cache is not loaded or if the package name is not found in the cache.
 */
export declare function PackageNameToProjectName(packageName: string): string;
/**
 * Converts a given project name to its corresponding package name using a cached mapping.
 *
 * This function looks up a project name in a predefined cache (`GENERATOR_PROJECT_NAME_TO_PACKAGE_NAME_CACHE`).
 * If the cache has not been initialized, it throws an error indicating that the cache is not loaded.
 * If the project name is found in the cache, it returns the corresponding package name.
 * If the project name is not found in the cache, it throws an error stating that the package could not be found.
 *
 * @param {string} projectName - The name of the project to convert to a package name.
 * @returns {string} The package name associated with the given project name.
 * @throws {Error} If the cache is not loaded or if the project name is not found in the cache.
 */
export declare function ProjectNameToPackageName(projectName: string): string;
/**
 * Checks if there is a project associated with the given package name in the cache.
 *
 * This function verifies if a project corresponding to the specified package name exists in the global cache.
 * It throws an error if the cache has not been initialized or loaded prior to this check.
 *
 * @param {string} packageName - The name of the package to check in the project cache.
 * @returns {boolean} - Returns `true` if the project exists for the given package name, otherwise `false`.
 * @throws {Error} - Throws an error if the cache is not yet loaded.
 */
export declare function HasProjectWithPackageName(packageName: string): boolean;