remark-lint-no-shortcut-reference-image

[![Build][badge-build-image]][badge-build-url]
[![Coverage][badge-coverage-image]][badge-coverage-url]
[![Downloads][badge-downloads-image]][badge-downloads-url]
[![Size][badge-size-image]][badge-size-url]
[![Sponsors][badge-funding-sponsors-image]][badge-funding-url]
[![Backers][badge-funding-backers-image]][badge-funding-url]
[![Chat][badge-chat-image]][badge-chat-url]

[remark-lint][github-remark-lint] rule to warn when shortcut reference images are used.

Contents

* What is this?
* When should I use this?
* Presets
* Install
* Use
* API
* unified().use(remarkLintNoShortcutReferenceImage)
* Recommendation
* Examples
* Compatibility
* Contribute
* License

What is this?

This package checks that collapsed or full reference images are used.

When should I use this?

You can use this package to check that references are consistent.

Presets

This plugin is included in the following presets:

| Preset | Options |
| - | - |
| remark-preset-lint-markdown-style-guide | |
| remark-preset-lint-recommended | |

Install

This package is [ESM only][github-gist-esm].
In Node.js (version 16+),
install with [npm][npm-install]:

``sh
npm install remark-lint-no-shortcut-reference-image
`

In Deno with [esm.sh][esm-sh]:

`js
import remarkLintNoShortcutReferenceImage from 'https://esm.sh/remark-lint-no-shortcut-reference-image@4'
`

In browsers with [esm.sh][esm-sh]:

`html

`

Use

On the API:

`js
import remarkLint from 'remark-lint'
import remarkLintNoShortcutReferenceImage from 'remark-lint-no-shortcut-reference-image'
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(remarkLintNoShortcutReferenceImage)
.use(remarkStringify)
.process(file)

console.error(reporter(file))
`

On the CLI:

`sh
remark --frail --use remark-lint --use remark-lint-no-shortcut-reference-image .
`

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

`diff
…
"remarkConfig": {
"plugins": [
…
"remark-lint",
+ "remark-lint-no-shortcut-reference-image",
…
]
}
…
`

API

This package exports no identifiers.
It exports no additional [TypeScript][typescript] types.
The default export is
[remarkLintNoShortcutReferenceImage][api-remark-lint-no-shortcut-reference-image].

$3

Warn when shortcut reference images are used.

###### Parameters

There are no options.

###### Returns

Transform ([Transformer from unified][github-unified-transformer]).

Recommendation

Shortcut references use an implicit style that looks a lot like something
that could occur as plain text instead of syntax.
In some cases,
plain text is intended instead of an image.
So it’s recommended to use collapsed or full references instead.

Examples

##### ok.md

###### In

`markdown
![Mercury][]

[mercury]: /mercury.png
`

###### Out

No messages.

##### not-ok.md

###### In

`markdown
![Mercury]

[mercury]: /mercury.png
`

###### Out

`text
1:1-1:11: Unexpected shortcut reference image (![text]), expected collapsed reference (![text][])
`

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-shortcut-reference-image@4,
compatible with Node.js 16.

Contribute

See [contributing.md][github-dotfiles-contributing] in [remarkjs/.github][github-dotfiles-health] for ways
to get started.
See [support.md`][github-dotfiles-support] for ways to get help.

This project has a [code of conduct][github-dotfiles-coc].
By interacting with this repository, organization, or community you agree to
abide by its terms.

License

[MIT][file-license] © [Titus Wormer][author]

[api-remark-lint-no-shortcut-reference-image]: #unifieduseremarklintnoshortcutreferenceimage

[author]: https://wooorm.com

[badge-build-image]: https://github.com/remarkjs/remark-lint/workflows/main/badge.svg

[badge-build-url]: https://github.com/remarkjs/remark-lint/actions

[badge-chat-image]: https://img.shields.io/badge/chat-discussions-success.svg

[badge-chat-url]: https://github.com/remarkjs/remark/discussions

[badge-coverage-image]: https://img.shields.io/codecov/c/github/remarkjs/remark-lint.svg

[badge-coverage-url]: https://codecov.io/github/remarkjs/remark-lint

[badge-downloads-image]: https://img.shields.io/npm/dm/remark-lint-no-shortcut-reference-image.svg

[badge-downloads-url]: https://www.npmjs.com/package/remark-lint-no-shortcut-reference-image

[badge-funding-backers-image]: https://opencollective.com/unified/backers/badge.svg

[badge-funding-sponsors-image]: https://opencollective.com/unified/sponsors/badge.svg

[badge-funding-url]: https://opencollective.com/unified

[badge-size-image]: https://img.shields.io/bundlejs/size/remark-lint-no-shortcut-reference-image

[badge-size-url]: https://bundlejs.com/?q=remark-lint-no-shortcut-reference-image

[esm-sh]: https://esm.sh

[file-license]: https://github.com/remarkjs/remark-lint/blob/main/license

[github-dotfiles-coc]: https://github.com/remarkjs/.github/blob/main/code-of-conduct.md

[github-dotfiles-contributing]: https://github.com/remarkjs/.github/blob/main/contributing.md

[github-dotfiles-health]: https://github.com/remarkjs/.github

[github-dotfiles-support]: https://github.com/remarkjs/.github/blob/main/support.md

[github-gist-esm]: https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c

[github-remark-lint]: https://github.com/remarkjs/remark-lint

[github-unified-transformer]: https://github.com/unifiedjs/unified#transformer

[npm-install]: https://docs.npmjs.com/cli/install

[typescript]: https://www.typescriptlang.org