/**
 * Asynchronously retrieves the latest version of a specified package, optionally bypassing the cache.
 *
 * This function first checks if the package version is available in a local cache (`LATEST_PACKAGE_VERSIONS`) unless
 * explicitly instructed to skip this cache. If the package version is not cached or cache is skipped, it attempts to
 * fetch the version from a predefined package group (`nx-migrations` in `rxapPackageJson`). If the package is not found
 * in the predefined group, it then fetches the package information from a remote source using `GetPackageInfo`.
 *
 * If the remote fetch is successful and the package information includes distribution tags, it updates the cache with
 * the latest version and returns it. If the fetched package information is invalid (i.e., lacks distribution tags),
 * the function logs the detailed package information and throws an error.
 *
 * @param {string} packageName - The name of the package for which the latest version is to be retrieved.
 * @param {boolean} [skipCache=false] - Optional flag to bypass the local cache check and force a fetch from remote sources.
 * @returns {Promise<string | null>} A promise that resolves to the latest version string of the package, or null if the
 * package cannot be found or if the package information is invalid.
 * @throws {Error} Throws an error if the package information fetched from the remote source is invalid.
 */
export declare function GetLatestPackageVersion(packageName: string, skipCache?: boolean): Promise<string | null>;