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syntax-tree/hast-util-heading-rank: utility to get the rank (or depth, level) of headings

hast utility to get the rank (also known as depth or level) of headings.

• What is this?
• When should I use this?
• Install
• Use
• API
  • headingRank(node)
• Types
• Compatibility
• Security
• Related
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• License

This package is a utility that lets you get the rank (1, 6) of heading elements (h1, h6).

This utility is pretty niche, if you’re here you probably know what you’re looking for!

To change heading ranks, use hast-util-shift-heading.

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

npm install hast-util-heading-rank

In Deno with esm.sh:

import {headingRank} from 'https://esm.sh/hast-util-heading-rank@3'

In browsers with esm.sh:

<script type="module">
  import {headingRank} from 'https://esm.sh/hast-util-heading-rank@3?bundle'
</script>

import {h} from 'hastscript'
import {headingRank} from 'hast-util-heading-rank'

headingRank(h('p', 'Alpha')) //=> undefined
headingRank(h('h5', 'Alpha')) //=> 5

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

Get the rank (1 to 6) of headings (h1 to h6).

• node (Node) — node to check

Rank of the heading (number) or undefined if not a heading.

This package is fully typed with TypeScript. It exports no additional types.

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-heading-rank@^3, compatible with Node.js 16.

hast-util-heading-rank does not mutate. There are no openings for cross-site scripting (XSS) attacks.

• hast-util-heading — check if a node is heading content
• hast-util-shift-heading — change heading rank

See contributing.md in syntax-tree/.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.

MIT © Titus Wormer

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