const options = {
    paragraph_open: '_p',
    bullet_list_open: '_ul',
    ordered_list_open: '_ol',
    hr: '_hr',
    link_open: '_a',
    blockquote_open: '_blockquote',
    table_open: '_table',
    thead_open: '_thead',
    tr_open: '_tr',
    th_open: '_th',
    td_open: '_td'
};
export function addCustomClassPlugin(md) {
    md.renderer.rules.heading_open = (tokens, idx, options, env, self) => {
        const token = tokens[idx];
        // console.log(token)
        // 判断当前标签是否为 h1
        if (['h1', 'h2', 'h3', 'h4', 'h5', 'h6'].includes(token.tag)) {
            // 给 h1 标签添加 class 属性
            token.attrJoin('class', `_${token.tag}`);
        }
        return self.renderToken(tokens, idx, options);
    };
    Object.keys(options).forEach((key) => {
        const className = options[key];
        md.renderer.rules[key] = (tokens, idx, options, env, self) => {
            tokens[idx].attrPush(['class', className]);
            return self.renderToken(tokens, idx, options);
        };
    });
}