remark-lint-checkbox-character-style

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

Contents

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

What is this?

This package checks the character used in checkboxes.

When should I use this?

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.

Presets

This plugin is included in the following presets:

Preset	Options
remark-preset-lint-consistent	'consistent'

Install

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>

Use

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",
     …
   ]
 }
 …

API

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

unified().use(remarkLintCheckboxCharacterStyle[, options])

Warn when list item checkboxes violate a given style.

Parameters

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

Returns

Transform (Transformer from unified).

Options

Configuration (TypeScript type).

Type

 type Options = Styles | 'consistent'

Styles

Styles (TypeScript type).

Fields

• 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

Recommendation

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.

Fix

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

Examples

ok-x.md

When configured with { checked: 'x' }.

In

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

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

Out

No messages.

ok-x-upper.md

When configured with { checked: 'X' }.

In

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

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

Out

No messages.

ok-space.md

When configured with { unchecked: ' ' }.

In

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

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

Out

No messages.

ok-tab.md

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

In

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

 - [␉] Mercury.
- [␉] Venus.

Out

No messages.

not-ok-default.md

In

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

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

Out

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

not-ok-option.md

When configured with '🌍'.

Out

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

not-ok-option-unchecked.md

When configured with { unchecked: '🌍' }.

Out

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

not-ok-option-checked.md

When configured with { checked: '🌍' }.

Out

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

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-checkbox-character-style@5,
compatible with Node.js 16.

Contribute

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.

License

MIT © Titus Wormer