import { Extension } from '@tiptap/core';
declare module '@tiptap/core' {
    interface Commands<ReturnType> {
        fontSize: {
            /**
             * Set the font size
             */
            setFontSize(fontSize: string): ReturnType;
            /**
             * Unset the font size
             */
            unsetFontSize(): ReturnType;
        };
        textStyle: {
            /**
             * Remove spans without inline style attributes.
             * @example editor.commands.removeEmptyTextStyle()
             */
            removeEmptyTextStyle(): ReturnType;
        };
    }
}
export interface TuiFontSizeOptions {
    types: string[];
}
export declare const TuiFontSizeExtension: Extension<TuiFontSizeOptions, any>;