/**
 * A function which creates a function that generates UUID v4 identifiers.
 *
 * @returns A new function that creates a UUID v4 string.
 *
 * #### Notes
 * This implementation complies with RFC 4122.
 *
 * This uses `Random.getRandomValues()` for random bytes, which in
 * turn will use the underlying `crypto` module of the platform if
 * it is available. The fallback for randomness is `Math.random`.
 */
export declare function uuid4Factory(getRandomValues: (bytes: Uint8Array) => void): () => string;