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rehype-slug

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rehype-slug - npm Package Compare versions

Comparing version 5.0.0 to 5.0.1

2

index.d.ts
/**
* Plugin to add `id`s to headings.
*
* @type {import('unified').Plugin<[], Root>}
* @type {import('unified').Plugin<Array<void>, Root>}
*/

@@ -6,0 +6,0 @@ export default function rehypeSlug():

@@ -16,3 +16,3 @@ /**

*
* @type {import('unified').Plugin<[], Root>}
* @type {import('unified').Plugin<Array<void>, Root>}
*/

@@ -19,0 +19,0 @@ export default function rehypeSlug() {

{
"name": "rehype-slug",
"version": "5.0.0",
"version": "5.0.1",
"description": "rehype plugin to add `id` attributes to headings",

@@ -44,3 +44,3 @@ "license": "MIT",

"devDependencies": {
"@types/github-slugger": "^1.3.0",
"@types/github-slugger": "^1.0.0",
"@types/tape": "^4.0.0",

@@ -50,4 +50,4 @@ "c8": "^7.0.0",

"rehype": "^12.0.0",
"remark-cli": "^9.0.0",
"remark-preset-wooorm": "^8.0.0",
"remark-cli": "^10.0.0",
"remark-preset-wooorm": "^9.0.0",
"rimraf": "^3.0.0",

@@ -57,3 +57,3 @@ "tape": "^5.0.0",

"typescript": "^4.0.0",
"xo": "^0.42.0"
"xo": "^0.47.0"
},

@@ -60,0 +60,0 @@ "scripts": {

@@ -11,11 +11,47 @@ # rehype-slug

[**rehype**][rehype] plugin to add `id`s to headings.
**[rehype][]** plugin to add `id`s to headings.
## 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(rehypeSlug)`](#unifieduserehypeslug)
* [Types](#types)
* [Compatibility](#compatibility)
* [Security](#security)
* [Related](#related)
* [Contribute](#contribute)
* [License](#license)
## What is this?
This package is a [unified][] ([rehype][]) plugin to add `id`s to headings.
It looks for headings (so `<h1>` through `<h6>`) that do not yet have `id`s
and adds `id` attributes to them based on the text they contain.
The algorithm that does this is [`github-slugger`][github-slugger], which
matches how GitHub works.
**unified** is a project that transforms content with abstract syntax trees
(ASTs).
**rehype** adds support for HTML to unified.
**hast** is the HTML AST that rehype uses.
This is a rehype plugin that adds `id`s to headings in the AST.
## When should I use this?
This plugin is useful when you have relatively long documents and you want to be
able to link to particular sections.
A different plugin, [`rehype-autolink-headings`][rehype-autolink-headings], adds
links to these headings back to themselves, which is useful as it lets users
more easily link to particular sections.
## Install
This package is [ESM only](https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c):
Node 12+ is needed to use it and it must be `import`ed instead of `require`d.
This package is [ESM only](https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c).
In Node.js (version 12.20+, 14.14+, or 16.0+), install with [npm][]:
[npm][]:
```sh

@@ -25,9 +61,23 @@ npm install rehype-slug

In Deno with [Skypack][]:
```js
import rehypeSlug from 'https://cdn.skypack.dev/rehype-slug@5?dts'
```
In browsers with [Skypack][]:
```html
<script type="module">
import rehypeSlug from 'https://cdn.skypack.dev/rehype-slug@5?min'
</script>
```
## Use
Say we have the following file, `fragment.html`:
Say we have the following file `example.html`:
```html
<h1>Lorem ipsum 😪</h1>
<h2>dolor—sit—amet</h2>
<h1 id=some-id>Lorem ipsum</h1>
<h2>Dolor sit amet 😪</h2>
<h3>consectetur &amp; adipisicing</h3>

@@ -38,25 +88,26 @@ <h4>elit</h4>

And our script, `example.js`, looks as follows:
And our module `example.js` looks as follows:
```js
import fs from 'node:fs'
import {read} from 'to-vfile'
import {rehype} from 'rehype'
import slug from 'rehype-slug'
import rehypeSlug from 'rehype-slug'
const buf = fs.readFileSync('fragment.html')
main()
rehype()
.data('settings', {fragment: true})
.use(slug)
.process(buf)
.then((file) => {
console.log(String(file))
})
async function main() {
const file = await rehype()
.data('settings', {fragment: true})
.use(rehypeSlug)
.process(await read('example.html'))
console.log(String(file))
}
```
Now, running `node example` yields:
Now, running `node example.js` yields:
```html
<h1 id="lorem-ipsum-">Lorem ipsum 😪</h1>
<h2 id="dolorsitamet">dolor—sit—amet</h2>
<h1 id="some-id">Lorem ipsum</h1>
<h2 id="dolor-sit-amet-">Dolor sit amet 😪</h2>
<h3 id="consectetur--adipisicing">consectetur &#x26; adipisicing</h3>

@@ -74,20 +125,33 @@ <h4 id="elit">elit</h4>

Add `id` properties to h1-h6 headings that don’t already have one.
Add `id`s to headings.
There are no options.
Uses [**github-slugger**][ghslug] to create GitHub style `id`s.
## Types
This package is fully typed with [TypeScript][].
There are no extra exported types.
## Compatibility
Projects maintained by the unified collective are compatible with all maintained
versions of Node.js.
As of now, that is Node.js 12.20+, 14.14+, and 16.0+.
Our projects sometimes work with older versions, but this is not guaranteed.
This plugin works with `rehype-parse` version 1+, `rehype-stringify` version 1+,
`rehype` version 1+, and `unified` version 4+.
## Security
Use of `rehype-slug` can open you up to a [cross-site scripting (XSS)][xss]
attack as it sets `id` attributes on headings.
In a browser, elements are retrievable by `id` with JavaScript and CSS.
If a user injects a heading that slugs to an `id` you are already using,
the user content may impersonate the website.
attack as it sets `id` attributes on headings, which causes what is known
as “DOM clobbering”.
Please use [`rehype-sanitize`][rehype-sanitize] and see its
[Example: headings (DOM clobbering)][rehype-sanitize-example] for information on
how to properly solve it.
Always be wary with user input and use [`rehype-sanitize`][sanitize].
## Related
* [`remark-slug`](https://github.com/wooorm/remark-slug)
— Add slugs to headings in markdown
* [`rehype-autolink-headings`][rehype-autolink-headings]
— add links to headings with IDs back to themselves

@@ -138,2 +202,4 @@ ## Contribute

[skypack]: https://www.skypack.dev
[health]: https://github.com/rehypejs/.github

@@ -151,8 +217,16 @@

[typescript]: https://www.typescriptlang.org
[unified]: https://github.com/unifiedjs/unified
[rehype]: https://github.com/rehypejs/rehype
[ghslug]: https://github.com/Flet/github-slugger
[xss]: https://en.wikipedia.org/wiki/Cross-site_scripting
[sanitize]: https://github.com/rehypejs/rehype-sanitize
[github-slugger]: https://github.com/Flet/github-slugger
[rehype-autolink-headings]: https://github.com/rehypejs/rehype-autolink-headings
[rehype-sanitize]: https://github.com/rehypejs/rehype-sanitize
[rehype-sanitize-example]: https://github.com/rehypejs/rehype-sanitize#example-headings-dom-clobbering
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