Bun provides a fast native implementation of the `HTMLRewriter` pattern developed by Cloudflare. It provides a convenient, `EventListener`-like API for traversing and transforming HTML documents.
```ts
const rewriter = new HTMLRewriter();
rewriter.on("*", {
element(el) {
console.log(el.tagName); // "body" | "div" | ...
},
});
```
To parse and/or transform the HTML:
```ts#rewriter.ts
rewriter.transform(
new Response(`
My First HTML Page
My First Heading
My first paragraph.
`));
```
View the full documentation on the [Cloudflare website](https://developers.cloudflare.com/workers/runtime-apis/html-rewriter/).