/**
 * Copyright 2023 Google LLC.
 * Copyright (c) Microsoft Corporation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * Generates a random v4 UUID, as specified in RFC4122.
 *
 * Uses the native Web Crypto API if available, otherwise falls back to a
 * polyfill.
 *
 * Example: '9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d'
 */
export declare function uuidv4(): `${string}-${string}-${string}-${string}-${string}`;