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remark-lint-no-duplicate-headings-in-section
Advanced tools
remark-lint rule to warn on duplicate headings in a section
remark-lint
rule to warn when the same text is used in multiple headings
in a section.
This package checks that headings are unique in sections.
You can use this package to check that headings are unique.
This plugin is not included in presets maintained here.
This package is ESM only. In Node.js (version 16+), install with npm:
npm install remark-lint-no-duplicate-headings-in-section
In Deno with esm.sh
:
import remarkLintNoDuplicateHeadingsInSection from 'https://esm.sh/remark-lint-no-duplicate-headings-in-section@4'
In browsers with esm.sh
:
<script type="module">
import remarkLintNoDuplicateHeadingsInSection from 'https://esm.sh/remark-lint-no-duplicate-headings-in-section@4?bundle'
</script>
On the API:
import remarkLint from 'remark-lint'
import remarkLintNoDuplicateHeadingsInSection from 'remark-lint-no-duplicate-headings-in-section'
import remarkParse from 'remark-parse'
import remarkStringify from 'remark-stringify'
import {read} from 'to-vfile'
import {unified} from 'unified'
import {reporter} from 'vfile-reporter'
const file = await read('example.md')
await unified()
.use(remarkParse)
.use(remarkLint)
.use(remarkLintNoDuplicateHeadingsInSection)
.use(remarkStringify)
.process(file)
console.error(reporter(file))
On the CLI:
remark --frail --use remark-lint --use remark-lint-no-duplicate-headings-in-section .
On the CLI in a config file (here a package.json
):
…
"remarkConfig": {
"plugins": [
…
"remark-lint",
+ "remark-lint-no-duplicate-headings-in-section",
…
]
}
…
This package exports no identifiers.
It exports no additional TypeScript types.
The default export is
remarkLintNoDuplicateHeadingsInSection
.
unified().use(remarkLintNoDuplicateHeadingsInSection)
Warn when the same text is used in multiple headings in a section.
There are no options.
Transform (Transformer
from unified
).
It’s likely a mistake that the same heading text is used in the same section.
ok.md
# Planets
## Venus
### Discovery
## Mars
### Discovery
### Phobos
#### Discovery
No messages.
not-ok.md
# Planets
## Mars
### Discovery
### Discovery
7:1-7:14: Unexpected heading with equivalent text in section, expected unique headings
tolerant-heading-increment.md
# Planets
#### Discovery
###### Phobos
#### Discovery
###### Deimos
7:1-7:15: Unexpected heading with equivalent text in section, expected unique headings
mdx.mdx
👉 Note: this example uses MDX (
remark-mdx
).
MDX is supported <em>too</em>.
<h1>Planets</h1>
<h2>Mars</h2>
<h3>Discovery</h3>
<h3>Discovery</h3>
6:1-6:19: Unexpected heading with equivalent text in section, expected unique headings
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,
remark-lint-no-duplicate-headings-in-section@4
,
compatible with Node.js 16.
See contributing.md
in remarkjs/.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.
FAQs
remark-lint rule to warn on duplicate headings in a section
The npm package remark-lint-no-duplicate-headings-in-section receives a total of 34,656 weekly downloads. As such, remark-lint-no-duplicate-headings-in-section popularity was classified as popular.
We found that remark-lint-no-duplicate-headings-in-section demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 3 open source maintainers collaborating on the project.
Did you know?
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