remark-lint rule to warn when list item checkboxes violate a given style.

• What is this?
• When should I use this?
• Presets
• Install
• Use
• API
  • unified().use(remarkLintCheckboxCharacterStyle[, options])
  • Options
  • Styles
• Recommendation
• Fix
• Examples
• Compatibility
• Contribute
• License

This package checks the character used in checkboxes.

You can use this package to check that the style of GFM tasklists is consistent. Task lists are a GFM feature enabled with remark-gfm.

This plugin is included in the following presets:

This package is ESM only. In Node.js (version 16+), install with npm:

npm install remark-lint-checkbox-character-style

In Deno with esm.sh:

import remarkLintCheckboxCharacterStyle from 'https://esm.sh/remark-lint-checkbox-character-style@5'

In browsers with esm.sh:

<script type="module">
  import remarkLintCheckboxCharacterStyle from 'https://esm.sh/remark-lint-checkbox-character-style@5?bundle'
</script>

On the API:

import remarkLint from 'remark-lint'
import remarkLintCheckboxCharacterStyle from 'remark-lint-checkbox-character-style'
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(remarkLintCheckboxCharacterStyle)
  .use(remarkStringify)
  .process(file)

console.error(reporter(file))

On the CLI:

remark --frail --use remark-lint --use remark-lint-checkbox-character-style .

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

 …
 "remarkConfig": {
   "plugins": [
     …
     "remark-lint",
+    "remark-lint-checkbox-character-style",
     …
   ]
 }
 …

This package exports no identifiers. It exports the TypeScript types Options and Styles. The default export is remarkLintCheckboxCharacterStyle.

Warn when list item checkboxes violate a given style.

• options (Options, default: 'consistent') — either preferred values or whether to detect the first styles and warn for further differences

Transform (Transformer from unified).

Configuration (TypeScript type).

type Options = Styles | 'consistent'

Styles (TypeScript type).

• checked ('X', 'x', or 'consistent', default: 'consistent') — preferred style to use for checked checkboxes
• unchecked ('␉' (a tab), '␠' (a space), or 'consistent', default: 'consistent') — preferred style to use for unchecked checkboxes

It’s recommended to set options.checked to 'x' (a lowercase X) as it prevents an extra keyboard press and options.unchecked to '␠' (a space) to make all checkboxes align.

remark-stringify formats checked checkboxes using 'x' (lowercase X) and unchecked checkboxes using '␠' (a space).

When configured with { checked: 'x' }.

👉 Note: this example uses GFM (remark-gfm).

- [x] Mercury.
- [x] Venus.

No messages.

When configured with { checked: 'X' }.

👉 Note: this example uses GFM (remark-gfm).

- [X] Mercury.
- [X] Venus.

No messages.

When configured with { unchecked: ' ' }.

👉 Note: this example uses GFM (remark-gfm).

- [ ] Mercury.
- [ ] Venus.
- [ ]␠␠
- [ ]

No messages.

When configured with { unchecked: '\t' }.

👉 Note: this example uses GFM (remark-gfm).

- [␉] Mercury.
- [␉] Venus.

No messages.

👉 Note: this example uses GFM (remark-gfm).

- [x] Mercury.
- [X] Venus.
- [ ] Earth.
- [␉] Mars.

2:5: Unexpected checked checkbox value `X`, expected `x`
4:5: Unexpected unchecked checkbox value `\t`, expected ` `

When configured with '🌍'.

1:1: Unexpected value `🌍` for `options`, expected an object or `'consistent'`

When configured with { unchecked: '🌍' }.

1:1: Unexpected value `🌍` for `options.unchecked`, expected `'\t'`, `' '`, or `'consistent'`

When configured with { checked: '🌍' }.

1:1: Unexpected value `🌍` for `options.checked`, expected `'X'`, `'x'`, or `'consistent'`

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-checkbox-character-style@5, 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.

MIT © Titus Wormer