/**
* @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
*/
/**
* @module case-change/casechangecommand
* @publicApi
*/
import { Command, type Editor } from "@ckeditor/ckeditor5-core";
/**
* This command changes the case of the selected text.
*/
export declare class CaseChangeCommand extends Command {
	/**
	* Creates a new `CaseChangeCommand` instance.
	*
	* @param editor The editor on which this command will be used.
	*/
	constructor(editor: Editor, transformCallback: CaseChangeTransformCallback);
	/**
	* Transforms the selected text with the defined case change callback.
	*
	* @fires execute
	*/
	override execute(): void;
	/**
	* @inheritDoc
	*/
	override refresh(): void;
}
export type CaseChangeTransformCallback = (arg: string) => string;