remark-lint-no-reference-like-url

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remark-lintgithub-remark-lint rule to warn when URLs are also defined identifiers.

Contents

• What is this?
• When should I use this?
• Presets
• Install
• Use
• API

unified().use(remarkLintNoReferenceLikeUrl)

• Recommendation
• Examples
• Compatibility
• Contribute
• License

What is this?

This package checks for likely broken URLs that should probably have been references.

When should I use this?

You can use this package to check links.

Presets

This plugin is not included in presets maintained here.

Install

This package is ESM onlygithub-gist-esm. In Node.js (version 16+), install with npmnpm-install:

npm install remark-lint-no-reference-like-url

In Deno with esm.shesm-sh:

import remarkLintNoReferenceLikeUrl from 'https://esm.sh/remark-lint-no-reference-like-url@4'

In browsers with esm.shesm-sh:

<script type="module">
  import remarkLintNoReferenceLikeUrl from 'https://esm.sh/remark-lint-no-reference-like-url@4?bundle'
</script>

Use

On the API:

import remarkLint from 'remark-lint'
import remarkLintNoReferenceLikeUrl from 'remark-lint-no-reference-like-url'
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(remarkLintNoReferenceLikeUrl)
  .use(remarkStringify)
  .process(file)

console.error(reporter(file))

On the CLI:

remark --frail --use remark-lint --use remark-lint-no-reference-like-url .

On the CLI in a config file (here a package.json):

…
"remarkConfig": {
  "plugins": [
    …
    "remark-lint",
+    "remark-lint-no-reference-like-url",
    …
  ]
}
…

API

This package exports no identifiers. It exports no additional TypeScripttypescript types. The default export is remarkLintNoReferenceLikeUrlapi-remark-lint-no-reference-like-url.

unified().use(remarkLintNoReferenceLikeUrl)

Warn when URLs are also defined identifiers.

Parameters

There are no options.

Returns

Transform (Transformer from unifiedgithub-unified-transformer).

Recommendation

While full URLs for definition identifiers are okay ([https://example.com]: https://example.com), and what looks like an identifier could be an actual URL ([text](alpha)), the more common case is that, assuming a definition [alpha]: https://example.com, then a link [text](alpha) should instead have been [text][alpha].

Examples

ok.md

In

[**Mercury**][mercury] is the first planet from the sun.

Out

No messages.

not-ok.md

In

[**Mercury**](mercury) is the first planet from the sun.

Out

1:1-1:23: Unexpected resource link (`[text](url)`) with URL that matches a definition identifier (as `mercury`), expected reference (`[text][id]`)

image.md

In

![**Mercury** is a planet](mercury).

Out

1:1-1:36: Unexpected resource image (`![text](url)`) with URL that matches a definition identifier (as `mercury`), expected reference (`![text][id]`)

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, remark-lint-no-reference-like-url@4, compatible with Node.js 16.

Contribute

See contributing.mdgithub-dotfiles-contributing in remarkjs/.githubgithub-dotfiles-health for ways to get started. See support.mdgithub-dotfiles-support for ways to get help.
This project has a code of conductgithub-dotfiles-coc. By interacting with this repository, organization, or community you agree to abide by its terms.

License

MITfile-license © Titus Wormerauthor