Remark-lint-fenced-code-marker NPM

remark-lint-fenced-code-marker

remark-lint rule to warn when fenced code markers are inconsistent.

What is this?

This package checks fenced code block markers.

When should I use this?

You can use this package to check that fenced code block markers are consistent.

Presets

This plugin is included in the following presets:

Preset	Options
`remark-preset-lint-consistent`	`'consistent'`
`remark-preset-lint-markdown-style-guide`	'`'

Install

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

npm install remark-lint-fenced-code-marker

In Deno with esm.sh:

import remarkLintFencedCodeMarker from 'https://esm.sh/remark-lint-fenced-code-marker@4'

In browsers with esm.sh:

<script type="module">
  import remarkLintFencedCodeMarker from 'https://esm.sh/remark-lint-fenced-code-marker@4?bundle'
</script>

Use

On the API:

import remarkLint from 'remark-lint'
import remarkLintFencedCodeMarker from 'remark-lint-fenced-code-marker'
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(remarkLintFencedCodeMarker)
  .use(remarkStringify)
  .process(file)

console.error(reporter(file))

On the CLI:

remark --frail --use remark-lint --use remark-lint-fenced-code-marker .

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

 …
 "remarkConfig": {
   "plugins": [
     …
     "remark-lint",
+    "remark-lint-fenced-code-marker",
     …
   ]
 }
 …

API

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

`unified().use(remarkLintFencedCodeMarker[, options])`

Warn when fenced code markers are inconsistent.

Parameters

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

Returns

Transform (Transformer from unified).

`Marker`

Marker (TypeScript type).

Type

type Marker = '`' | '~'

`Options`

Configuration (TypeScript type).

Type

type Options = Marker | 'consistent'

Recommendation

Tildes are uncommon. So it’s recommended to configure this rule with '`'.

Fix

remark-stringify formats fenced code with grave accents by default. Pass fence: '~' to always use tildes.

Examples

`ok-indented.md`

In

Indented code blocks are not affected by this rule:

    mercury()

Out

No messages.

`ok-tick.md`

When configured with '`'.

In

```javascript
mercury()
```

```
venus()
```

Out

No messages.

`ok-tilde.md`

When configured with '~'.

In

~~~javascript
mercury()
~~~

~~~
venus()
~~~

Out

No messages.

`not-ok-consistent-tick.md`

In

```javascript
mercury()
```

~~~
venus()
~~~

Out

5:1-7:4: Unexpected fenced code marker `~`, expected `` ` ``

`not-ok-consistent-tilde.md`

In

~~~javascript
mercury()
~~~

```
venus()
```

Out

5:1-7:4: Unexpected fenced code marker `` ` ``, expected `~`

`not-ok-incorrect.md`

When configured with '🌍'.

Out

1:1: Unexpected value `🌍` for `options`, expected ``'`'``, `'~'`, 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-fenced-code-marker@4, compatible with Node.js 16.