/**
 * Generates a unique identifier with a consistent length.
 */
export declare function generateId(): string;
/**
 * Generates a UUID (Universally Unique Identifier).
 * Uses crypto.randomUUID() when available (secure contexts like HTTPS or localhost).
 * Falls back to a compliant UUID v4 generator for insecure contexts.
 *
 * @returns A UUID string in the format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
 */
export declare function generateUUID(): string;