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hastx

Create hast syntax trees using JSX

Hast is an abstract syntax tree format for hypertext, and it is used by the Rehype ecosystem as a universal representation for HTML documents.

This module provides a way to create hast trees using JSX which are suitable as inputs to any Rehype pipeline.

For example, the following code uses JSX to create a section of HTML and then pipes it through the rehype-slug and rehype-autolink-headings to automatically add internal ids and links to each h1 element

import rehypeSlug from "rehype-slug";
import rehypeAutoLinkHeadings from "rehype-autolink-headings";

import { pipe } from "lodash/fp";

let enhanced = pipe(rehypeSlug(), rehypeAutoLinkHeandings())(
  <section>
    <h1>Chapter 1</h1>
    <p>It was the best of times. It was the worst of times...</p>
  </section>,
);

This package only supports the modern "automatic" JSX Transform. How to configure this is highly dependent on your compiler, but generally involve setting the jsxImportSource attribute to "hastx" either via a settings file or a compiler pragma. The following list is non-exhaustive.

Deno

Add the following to your deno.json:

{
  "compilerOptions": {
    "jsx": "react-jsx",
    "jsxImportSource": "hastx"
  },
  "imports": {
    "hastx/jsx-runtime": "https://deno.land/x/hastx/jsx-runtime.ts"
  }
}

TypeScript

Install the "hastx" package from npm, and configure your jsxImportSource

{
  "compilerOptions": {
    "jsx": "react-jsx",
    "jsxImportSource": "hastx"
  }
}

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Create Rehype syntax trees using JSX

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