/// <reference types="react" />
import { onKeyDown } from './handlers';
import { renderMark } from './render';
export default function UnderlinePlugin(options: any): {
    toolbar: {
        button: typeof import("./components/UnderlineButton").default;
    };
    commands: {
        toggleUnderlineMark: (editor: any) => any;
    };
    onKeyDown: typeof onKeyDown;
    renderMark: typeof renderMark;
    htmlRule: {
        deserialize(el: any, next: any): {
            object: string;
            type: string;
            nodes: any;
        };
        serialize(obj: any, children: any): JSX.Element;
    };
};