remark-lint-no-empty-url

remark-lint rule to warn on empty URLs in links and images

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remark-lint-no-empty-url
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remark-lintmono rule to warn for empty URLs in links and images.

Contents

*   [`unified().use(remarkLintNoEmptyUrl[, config])`](#unifieduseremarklintnoemptyurl-config)

What is this?

This package is a unified (remark) plugin, specifically a remark-lint rule. Lint rules check markdown code style.

When should I use this?

You can use this package to check that links and images have URLs.

Presets

This rule is not included in a preset maintained here.

Install

This package is ESM onlyesm. In Node.js (version 12.20+, 14.14+, or 16.0+), install with npm:
npm install remark-lint-no-empty-url

In Deno with Skypack:
import remarkLintNoEmptyUrl from 'https://cdn.skypack.dev/remark-lint-no-empty-url@3?dts'

In browsers with Skypack:
<script type="module">
  import remarkLintNoEmptyUrl from 'https://cdn.skypack.dev/remark-lint-no-empty-url@3?min'
</script>

Use

On the API:
import {read} from 'to-vfile'
import {reporter} from 'vfile-reporter'
import {remark} from 'remark'
import remarkLint from 'remark-lint'
import remarkLintNoEmptyUrl from 'remark-lint-no-empty-url'

main()

async function main() {
  const file = await remark()
    .use(remarkLint)
    .use(remarkLintNoEmptyUrl)
    .process(await read('example.md'))

  console.error(reporter(file))
}

On the CLI:
remark --use remark-lint --use remark-lint-no-empty-url example.md

On the CLI in a config file (here a package.json):
…
"remarkConfig": {
  "plugins": [
    …
    "remark-lint",
+    "remark-lint-no-empty-url",
    …
  ]
}
…

API

This package exports no identifiers. The default export is remarkLintNoEmptyUrl.

unified().use(remarkLintNoEmptyUrl[, config])

This rule supports standard configuration that all remark lint rules accept (such as false to turn it off or [1, options] to configure it).
There are no options.

Recommendation

While it is possible to omit URLs in links and images, that typically indicates a “placeholder” or todo that has to be filled out later. It’s recommended to fill them out.

Examples

ok.md
In
[alpha](http://bravo.com).

![charlie](http://delta.com/echo.png "foxtrot").
Out
No messages.
not-ok.md
In
[golf]().

![hotel]().
Out
1:1-1:9: Don’t use links without URL
3:1-3:11: Don’t use images without URL

Compatibility

Projects maintained by the unified collective are compatible with all maintained versions of Node.js. As of now, that is Node.js 12.20+, 14.14+, and 16.0+. Our projects sometimes work with older versions, but this is not guaranteed.

Contribute

See contributing.mdcontributing in remarkjs/.githubhealth for ways to get started. See support.mdsupport for ways to get help.
This project has a code of conductcoc. By interacting with this repository, organization, or community you agree to abide by its terms.

License

MITlicense © Titus Wormerauthor