/*!
 * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */
/**
 * Single tone function decorator
 *
 * @param func - Function
 */
export declare function once<T extends unknown[], K>(func: (...args: T) => K): ((...args: T) => K);