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Showing content from https://github.com/remarkjs/remark-message-control below:

remarkjs/remark-message-control: plugin to enable, disable, and ignore messages

remark plugin to enable, disable, and ignore messages with comments.

• What is this?
• When should I use this?
• Install
• Use
• API
  • unified().use(remarkMessageControl, options)
  • Options
• Syntax
• Types
• Compatibility
• Security
• Related
• Contribute
• License

This package is a unified (remark) plugin that lets authors write comments in markdown to show and hide messages.

You can use this package when you’re building a linter such as remark-lint. But you probably don’t need to, because remark-lint already exists and it uses this package.

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

npm install remark-message-control

In Deno with esm.sh:

import remarkMessageControl from 'https://esm.sh/remark-message-control@8'

In browsers with esm.sh:

<script type="module">
  import remarkMessageControl from 'https://esm.sh/remark-message-control@8?bundle'
</script>

Say we have the following file example.md:

<!--foo ignore-->

## Neptune

…and a module example.js:

/**
 * @typedef {import('mdast').Root} Root
 */

import {remark} from 'remark'
import remarkMessageControl from 'remark-message-control'
import {read} from 'to-vfile'
import {reporter} from 'vfile-reporter'

const file = await remark()
  .use(function () {
    /** @param {Root} tree */
    return function (tree, file) {
      file.message('Whoops!', {
        place: tree.children[1]?.position,
        ruleId: 'thing',
        source: 'foo'
      })
    }
  })
  .use(remarkMessageControl, {name: 'foo'})
  .process(await read('example.md'))

console.error(reporter(file))

…then running node example.js yields:

example.md: no issues found

👉 Note: without remarkMessageControl, we’d see:

example.md
3:1-3:11 warning Whoops! thing foo

⚠ 1 warning

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

Enable, disable, and ignore messages with comments.

• options (Options, required) — configuration

Transform (Transformer).

Configuration (TypeScript type).

• enable (Array<string>, optional) — list of ruleIds to initially turn on; used if reset is true
• disable (Array<string>, optional) — list of ruleIds to initially turn off; used if reset is not true
• known (Array<string>, optional) — list of allowed ruleIds
• name (string, required) — name of markers that can control the message sources
• reset (boolean, default: false) — whether to treat all messages as turned off initially
• source (Array<string> or string, default: options.name) — sources that can be controlled with markers

This plugin looks for comments in markdown (MDX is also supported). If the first word in those comments does not match options.name, the comment is skipped. The second word is expected to be disable, enable, or ignore. Further words are rule identifiers of messages which are configurated.

In EBNF, the grammar looks as follows:

marker ::= identifier whitespace+ keyword ruleIdentifiers?
identifier ::= word+ /* restriction: must match `options.name` */
keyword ::= 'enable' | 'disable' | 'ignore'
ruleIdentifiers ::= word+ (whitespace+ word+)*
whitespace ::= ' ' | '\t' | '\r' | '\n' | '\f'
word ::= letter | digit | punctuation
letter ::= letterLowercase | letterUppercase
punctuation ::= '-' | '_'
letterLowercase ::= 'a' | 'b' | 'c' | 'd' | 'e' | 'f' | 'g' | 'h' | 'i' | 'j' | 'k' | 'l' | 'm' | 'n' | 'o' | 'p' | 'q' | 'r' | 's' | 't' | 'u' | 'v' | 'w' | 'x' | 'y' | 'z'
letterUppercase ::= 'A' | 'B' | 'C' | 'D' | 'E' | 'F' | 'G' | 'H' | 'I' | 'J' | 'K' | 'L' | 'M' | 'N' | 'O' | 'P' | 'Q' | 'R' | 'S' | 'T' | 'U' | 'V' | 'W' | 'X' | 'Y' | 'Z'
digit ::= '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9'

Which keyword is used defines how messages with those rule identifiers are handled:

The disable keyword turns off all messages of the given rule identifiers. When without identifiers, all messages are turned off.

For example, to turn off certain messages:

<!--lint disable list-item-bullet-indent strong-marker-->

*   **foo**

A paragraph, and now another list.

  * __bar__

The enable keyword turns on all messages of the given rule identifiers. When without identifiers, all messages are turned on.

For example, to enable certain messages:

<!--lint enable strong-marker-->

**foo** and __bar__.

The ignore keyword turns off all messages of the given ruleIds occurring in the following node. When without ruleIds, all messages are ignored.

Messages are turned on again after the end of the following node.

For example, to turn off certain messages for the next node:

<!--lint ignore list-item-bullet-indent strong-marker-->

*   **foo**
  * __bar__

This package is fully typed with TypeScript. It exports the additional type Options.

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-message-control@^8, compatible with Node.js 16.

This plugin works with unified version 6+ and remark version 7+.

Use of remark-message-control does not involve rehype (hast) or user content so there are no openings for cross-site scripting (XSS) attacks. Messages may be hidden from user content though, causing builds to fail or pass, or changing a report.

• remark-lint — plugin to lint code style
• mdast-comment-marker — mdast utility to parse comment markers

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

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