/**
 * @license Copyright (c) 2003-2026, CKSource Holding sp. z o.o. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-licensing-options
 */
/**
 * Creates a new object with keys mapped using the provided function.
 *
 * @param obj - The input object.
 * @param fn - The mapping function (takes the original key, returns the new one).
 * If produces the same key for multiple inputs, later entries override earlier ones.
 * @returns A new object with the mapped keys.
 */
export declare function mapObjectKeys<T>(obj: Record<string, T>, fn: (key: string) => string): Record<string, T>;