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hast-util-is-css-link

v3.0.1

Published

hast utility to check if an element is a css link

Downloads

82,220

Readme

hast-util-is-css-link

Build Coverage Downloads Size Sponsors Backers Chat

hast utility to check if an element is a CSS link.

Contents

What is this?

This package is a utility to check whether a hast node is a <link> that references CSS.

When should I use this?

You can use this package to check whether links reference CSS or something else.

Install

This package is ESM only. In Node.js (version 16+), install with npm:

npm install hast-util-is-css-link

In Deno with esm.sh:

import {isCssLink} from 'https://esm.sh/hast-util-is-css-link@3'

In browsers with esm.sh:

<script type="module">
  import {isCssLink} from 'https://esm.sh/hast-util-is-css-link@3?bundle'
</script>

Use

import {h} from 'hastscript'
import {isCssLink} from 'hast-util-is-css-link'

isCssLink(h('link', {rel: ['stylesheet', 'author']})) //=> true
isCssLink(h('link', {rel: ['stylesheet'], type: 'text/css'})) //=> true
isCssLink(h('link', {rel: ['stylesheet'], type: 'text/foo'})) //=> false

API

This package exports the identifier isCssLink. There is no default export.

isCssLink(node)

Check whether a hast node is a <link> that references CSS.

Returns true if node is a <link> element with a rel list that contains 'stylesheet' and has no type, an empty type, or 'text/css' as its type.

Parameters
  • node (Node) — node to check
Returns

Whether a node is a <link> that references CSS (boolean).

Syntax

HTML is parsed according to WHATWG HTML (the living standard), which is also followed by all browsers.

Syntax tree

The syntax tree used is hast.

Types

This package is fully typed with TypeScript.

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, hast-util-is-css-link@^3, compatible with Node.js 16.

Security

As rehype works on HTML and improper use of HTML can open you up to a cross-site scripting (XSS) attack, use of rehype can also be unsafe. Use rehype-sanitize to make the tree safe.

Contribute

See contributing.md in rehypejs/.github for ways to get started. See support.md for ways to get help.

This project has a code of conduct. By interacting with this repository, organization, or community you agree to abide by its terms.

License

MIT © Titus Wormer