@rspress/mdx-rs

This is a Node.js binding for MDX compilation of Rspress which is a modern documentation tool based on Rspack.

It can be 10x+ faster than compiler in pure JavaScript version.The benchmark result of @rspress/mdx-rs vs @mdx-js/mdx is as follows:

Tool	Time Spend
@rspress/mdx-rs	977 ms
@mdx-js/mdx	21300 ms

We forked mdxjs-rs, the Rust version of mdx compiler and customize it for Rspress, adding the following features:

Crate	Description
mdx_rs_binding	🔥 Add Node.js binding so that we can use it in Node.js.
mdx_plugin_container	Implement container grammar like :::tip in @rspress/plugin-container-syntax.
mdx_plugin_toc	Generate table of contents.
mdx_plugin_frontmatter	Parse frontmatter and export it in the esm module.
mdx_plugin_external_link	Add target="_blank" and rel="noopener noreferrer" to external link.
mdx_plugin_header_anchor	Add anchor for every header.
mdx_plugin_normalize_link	Normalize link to complete url base on current filepath.
mdx_plugin_html	Serialize hast to html string
slugger	Generate slug for header, port from github-slugger.

Install

# npm
npm install @rspress/mdx-rs
# yarn
yarn add @rspress/mdx-rs
# pnpm
pnpm install @rspress/mdx-rs

Usage

import { compile } from "@rspress/mdx-rs";

async function main() {
  const value = `
  # Hello World

  This is a demo of @rspress/mdx-rs
  `;

  const result = await compile({
    // The mdx content
    value,
    // File path of the mdx file, the compiler will determine the different syntax(md/mdx) based on the file extension
    filepath: "xxx.mdx",
    // Whether to enable development mode, default is false
    development: true,
    // Current working directory, can be empty string
    root: "",
  });

  console.log(result);
}

Of course, you can also the compileSync function to compile mdx synchronously, which is not recommended because it will block the event loop and slow down the compile process.

import { compileSync } from "@rspress/mdx-rs";

function main() {
  const value = `
  # Hello World

  This is a demo of @rspress/mdx-rs
  `;

  const result = compileSync({
    // The mdx content
    value,
    // File path of the mdx file, can be empty string
    filepath: "",
    // Whether to enable development mode, default is false
    development: true,
    // Current working directory, can be empty string
    root: "",
  });

  console.log(result);
}

Credits

Thanks to mdxjs-rs, the awesome Rust library authored by wooorm.

Also, thanks to napi-rs, authored by Brooooooklyn, which is a great solution to help us build Node.js binding for Rust.