/**
 * In the backend we use a unique ID to identify a user. If there is no ID in localStorage
 * we generate a new one and store it in localStorage. We then combine it with the
 * cluster name and this headlamp-userId to create a unique ID for a cluster. If we don't
 * do it then if 2 different users have a cluster with the same name, then the
 * proxy will be overwritten.
 * @returns headlamp-userId from localStorage
 */
export declare function getUserIdFromLocalStorage(): string;