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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(`
<!DOCTYPE html>
<html>
<!-- comment -->
<head>
<title>My First HTML Page</title>
</head>
<body>
<h1>My First Heading</h1>
<p>My first paragraph.</p>
</body>
`));
```
View the full documentation on the [Cloudflare website](https://developers.cloudflare.com/workers/runtime-apis/html-rewriter/).
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