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remark-lint-no-duplicate-definitions
Advanced tools
remark-lint rule to warn on duplicate definitions
remark-lint
rule to warn when identifiers are defined multiple times.
This package checks that defined identifiers are unique.
You can use this package to check that definitions are useful.
This plugin is included in the following presets:
Preset | Options |
---|---|
remark-preset-lint-recommended |
This package is ESM only. In Node.js (version 16+), install with npm:
npm install remark-lint-no-duplicate-definitions
In Deno with esm.sh
:
import remarkLintNoDuplicateDefinitions from 'https://esm.sh/remark-lint-no-duplicate-definitions@4'
In browsers with esm.sh
:
<script type="module">
import remarkLintNoDuplicateDefinitions from 'https://esm.sh/remark-lint-no-duplicate-definitions@4?bundle'
</script>
On the API:
import remarkLint from 'remark-lint'
import remarkLintNoDuplicateDefinitions from 'remark-lint-no-duplicate-definitions'
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(remarkLintNoDuplicateDefinitions)
.use(remarkStringify)
.process(file)
console.error(reporter(file))
On the CLI:
remark --frail --use remark-lint --use remark-lint-no-duplicate-definitions .
On the CLI in a config file (here a package.json
):
…
"remarkConfig": {
"plugins": [
…
"remark-lint",
+ "remark-lint-no-duplicate-definitions",
…
]
}
…
This package exports no identifiers.
It exports no additional TypeScript types.
The default export is
remarkLintNoDuplicateDefinitions
.
unified().use(remarkLintNoDuplicateDefinitions)
Warn when identifiers are defined multiple times.
There are no options.
Transform (Transformer
from unified
).
It’s a mistake when the same identifier is defined multiple times.
ok.md
[mercury]: https://example.com/mercury/
[venus]: https://example.com/venus/
No messages.
not-ok.md
[mercury]: https://example.com/mercury/
[mercury]: https://example.com/venus/
2:1-2:38: Unexpected definition with an already defined identifier (`mercury`), expected unique identifiers
gfm.md
👉 Note: this example uses GFM (
remark-gfm
).
Mercury[^mercury].
[^mercury]:
Mercury is the first planet from the Sun and the smallest in the Solar
System.
[^mercury]:
Venus is the second planet from the Sun.
7:1-7:12: Unexpected footnote definition with an already defined identifier (`mercury`), expected unique identifiers
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-definitions@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 definitions
The npm package remark-lint-no-duplicate-definitions receives a total of 135,268 weekly downloads. As such, remark-lint-no-duplicate-definitions popularity was classified as popular.
We found that remark-lint-no-duplicate-definitions 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.
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