/// <reference types="react" />
import { marksRender } from '../marks';
export default function FontSizePlugin(options?: {}): {
    toolbar: {
        button: (props: any) => JSX.Element;
    };
    renderMark: typeof marksRender;
    htmlRule: {
        deserialize(el: any, next: any): {
            object: string;
            text: any;
            marks: {
                object: string;
                type: any;
                data: any;
            }[];
        };
        serialize(obj: any, children: any): JSX.Element;
    };
};