# rehype-dom-stringify [![Build][build-badge]][build] [![Coverage][coverage-badge]][coverage] [![Downloads][downloads-badge]][downloads] [![Size][size-badge]][size] [![Sponsors][sponsors-badge]][collective] [![Backers][backers-badge]][collective] [![Chat][chat-badge]][chat] **[rehype][]** plugin to add support for serializing HTML in browsers. ## Contents * [What is this?](#what-is-this) * [When should I use this?](#when-should-i-use-this) * [Install](#install) * [Use](#use) * [API](#api) * [`unified().use(rehypeDomStringify[, options])`](#unifieduserehypedomstringify-options) * [`Options`](#options) * [Syntax](#syntax) * [Syntax tree](#syntax-tree) * [Types](#types) * [Compatibility](#compatibility) * [Security](#security) * [Contribute](#contribute) * [License](#license) ## What is this? This is like [`rehype-stringify`][rehype-stringify] but for browsers. This plugin uses DOM APIs to do its work, which makes it smaller in browsers, at the cost of not supporting formatting options. ## When should I use this? Use this package when you want to use `rehype-stringify` solely in browsers. See [the monorepo readme][rehype-dom] for info on when to use `rehype-dom`. This plugin is built on [`hast-util-to-dom`][hast-util-to-dom], which is a low level tool to turn hast syntax trees into DOM nodes. rehype focusses on making it easier to transform content by abstracting such internals away. ## Install This package is [ESM only][esm]. In Node.js (version 16+), install with [npm][]: ```sh npm install rehype-dom-stringify ``` In Deno with [`esm.sh`][esmsh]: ```js import rehypeDomStringify from 'https://esm.sh/rehype-dom-stringify@4' ``` In browsers with [`esm.sh`][esmsh]: ```html ``` ## Use Say our page `example.html` contains: ```html Example ``` …opening it in a browser prints the following to the browser console: ```html

Hello, world!

``` ## API This package exports no identifiers. The default export is [`rehypeDomStringify`][api-rehype-dom-stringify]. ### `unified().use(rehypeDomStringify[, options])` Add support for serializing as HTML with DOM APIs. ###### Parameters * `options` ([`Options`][api-options], optional) — configuration ###### Returns Transform ([`Transformer`][unified-transformer]). ### `Options` Configuration (TypeScript type). > 👉 **Note**: the default of the `fragment` option is `true` in this package, > which is different from the value in `rehype-parse`, as this makes more sense > in browsers. ###### Fields * `fragment` (`boolean`, default: `true`) — specify whether to serialize a fragment * `namespace` (`string`, optional) — namespace to start with ## Syntax HTML is parsed and serialized according to what a browser supports (which *should* be WHATWG HTML). ## Syntax tree The syntax tree used in rehype is [hast][]. ## Types This package is fully typed with [TypeScript][]. It exports the additional type [`Options`][api-options]. It also registers `Settings` with `unified`. If you’re passing options with `.data('settings', …)`, make sure to import this package somewhere in your types, as that registers the fields. ```js /** * @import {} from 'rehype-dom-stringify' */ import {unified} from 'unified' // @ts-expect-error: `thisDoesNotExist` is not a valid option. unified().data('settings', {thisDoesNotExist: false}) ``` ## Compatibility Projects maintained by the unified collective are compatible with maintained versions of Node.js. When we cut a new major release, we drop support for unmaintained versions of Node. This means we try to keep the current release line, `rehype-dom-stringify@^4`, compatible with Node.js 16. ## Security Use of `rehype-dom-stringify` can open you up to a [cross-site scripting (XSS)][xss] attack if dangerous content is used and the result is used with the actual DOM. Use [`rehype-sanitize`][rehype-sanitize] to solve that. ## Contribute See [`contributing.md`][contributing] in [`rehypejs/.github`][health] for ways to get started. See [`support.md`][support] for ways to get help. This project has a [code of conduct][coc]. By interacting with this repository, organisation, or community you agree to abide by its terms. ## License [ISC][license] © [Keith McKnight][author] [build-badge]: https://github.com/rehypejs/rehype-dom/workflows/main/badge.svg [build]: https://github.com/rehypejs/rehype-dom/actions [coverage-badge]: https://img.shields.io/codecov/c/github/rehypejs/rehype-dom.svg [coverage]: https://codecov.io/github/rehypejs/rehype-dom [downloads-badge]: https://img.shields.io/npm/dm/rehype-dom-stringify.svg [downloads]: https://www.npmjs.com/package/rehype-dom-stringify [size-badge]: https://img.shields.io/bundlejs/size/rehype-dom-stringify [size]: https://bundlejs.com/?q=rehype-dom-stringify [sponsors-badge]: https://opencollective.com/unified/sponsors/badge.svg [backers-badge]: https://opencollective.com/unified/backers/badge.svg [collective]: https://opencollective.com/unified [chat-badge]: https://img.shields.io/badge/chat-discussions-success.svg [chat]: https://github.com/rehypejs/rehype/discussions [npm]: https://docs.npmjs.com/cli/install [esm]: https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c [esmsh]: https://esm.sh [author]: https://keith.mcknig.ht [license]: https://github.com/rehypejs/rehype-dom/blob/main/license [health]: https://github.com/rehypejs/.github [contributing]: https://github.com/rehypejs/.github/blob/main/contributing.md [support]: https://github.com/rehypejs/.github/blob/main/support.md [coc]: https://github.com/rehypejs/.github/blob/main/code-of-conduct.md [xss]: https://en.wikipedia.org/wiki/Cross-site_scripting [hast]: https://github.com/syntax-tree/hast [hast-util-to-dom]: https://github.com/syntax-tree/hast-util-to-dom [rehype]: https://github.com/rehypejs/rehype [rehype-dom]: https://github.com/rehypejs/rehype-dom [rehype-sanitize]: https://github.com/rehypejs/rehype-sanitize [rehype-stringify]: https://github.com/rehypejs/rehype/tree/main/packages/rehype-stringify [typescript]: https://www.typescriptlang.org [unified-transformer]: https://github.com/unifiedjs/unified#transformer [api-options]: #options [api-rehype-dom-stringify]: #unifieduserehypedomstringify-options