此工具包在agent 周年使用还是挺多的，同时支持不少配置参数

参考玩法

import { VfsSandbox } from "@langchain/node-vfs";
import turndown from "turndown"
import fecth from "node-fetch"
const sandbox = await VfsSandbox.create({
  initialFiles: {
    "/src/index.js": "console.log('Hello from VFS!')",
  },
});

const markdown = new turndown().turndown(`
    <h1>Turndown Demo</h1>

<p>This demonstrates <a href="https://github.com/mixmark-io/turndown">turndown</a> – an HTML to Markdown converter in JavaScript.</p>

<h2>Usage</h2>

<pre><code class="language-js">var turndownService = new TurndownService()
console.log(
  turndownService.turndown('&lt;h1&gt;Hello world&lt;/h1&gt;')
)</code></pre>

<hr />

<p>It aims to be <a href="http://commonmark.org/">CommonMark</a>
 compliant, and includes options to style the output. These options include:</p>

<ul>
  <li>headingStyle (setext or atx)</li>
  <li>horizontalRule (*, -, or _)</li>
  <li>bullet (*, -, or +)</li>
  <li>codeBlockStyle (indented or fenced)</li>
  <li>fence ( or ~)</li>
  <li>emDelimiter (_ or *)</li>
  <li>strongDelimiter (** or __)</li>
  <li>linkStyle (inlined or referenced)</li>
  <li>linkReferenceStyle (full, collapsed, or shortcut)</li>
</ul>
 `);

const result = await sandbox.execute(`echo "${markdown}" > /src/hello.md && cat /src/hello.md`);

let fileLists = await sandbox.ls("/src");
const fileContent = await sandbox.readRaw("/src/hello.md");
console.log(fileContent.data.content);

说明

turndown 同时还支持配置参数，不少agent 框架 在用

参考资料

https://www.npmjs.com/package/turndown

https://github.com/mixmark-io/turndown

https://mixmark-io.github.io/turndown/