/**
 * @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 font/fontsize
 */
import { Plugin } from 'ckeditor5/src/core.js';
import { FontSizeEditing } from './fontsize/fontsizeediting.js';
import { FontSizeUI } from './fontsize/fontsizeui.js';
import type { FontSizeOption } from './fontconfig.js';
/**
 * The font size plugin.
 *
 * For a detailed overview, check the {@glink features/font font feature} documentation
 * and the {@glink api/font package page}.
 *
 * This is a "glue" plugin which loads the {@link module:font/fontsize/fontsizeediting~FontSizeEditing} and
 * {@link module:font/fontsize/fontsizeui~FontSizeUI} features in the editor.
 */
export declare class FontSize extends Plugin {
    /**
     * @inheritDoc
     */
    static get requires(): readonly [typeof FontSizeEditing, typeof FontSizeUI];
    /**
     * @inheritDoc
     */
    static get pluginName(): "FontSize";
    /**
     * @inheritDoc
     */
    static get isOfficialPlugin(): true;
    /**
     * Normalizes and translates the {@link module:font/fontconfig~FontSizeConfig#options configuration options}
     * to the {@link module:font/fontconfig~FontSizeOption} format.
     *
     * @param options An array of options taken from the configuration.
     */
    normalizeSizeOptions(options: Array<string | number | FontSizeOption>): Array<FontSizeOption>;
}