micromark-util-classify-character

[![Build][build-badge]][build] [![Coverage][coverage-badge]][coverage] [![Downloads][downloads-badge]][downloads] [![Size][bundle-size-badge]][bundle-size] [![Sponsors][sponsors-badge]][opencollective] [![Backers][backers-badge]][opencollective] [![Chat][chat-badge]][chat]

[micromark][] utility to classify whether a character is whitespace or punctuation.

* What is this? * When should I use this? * Install * Use * API * classifyCharacter(code) * Types * Compatibility * Security * Contribute * License

What is this?

This package exposes an algorithm to classify characters into 3 categories.

When should I use this?

This package might be useful when you are making your own micromark extensions.

Install

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

npm install micromark-util-classify-character

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

import {classifyCharacter} from 'https://esm.sh/micromark-util-classify-character@1'

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

Use

/**
 * @this {TokenizeContext}
 *   Context.
 * @type {Tokenizer}
 */
function tokenizeAttention(effects, ok) {
  return start
  // …
  /* @type {State} /
  function sequence(code) {
    if (code === marker) {
      // …
    }
    const token = effects.exit('attentionSequence')
    const after = classifyCharacter(code)
    const open =
      !after || (after === constants.characterGroupPunctuation && before)
    const close =
      !before || (before === constants.characterGroupPunctuation && after)
    // …
  }  // …
}

API

This module exports the identifier [classifyCharacter][api-classify-character]. There is no default export.

`classifyCharacter(code)`

Classify whether a code represents whitespace, punctuation, or something else.

Used for attention (emphasis, strong), whose sequences can open or close based on the class of surrounding characters.

👉 Note: eof (null) is seen as whitespace.

###### Parameters

* code (Code) — code

###### Returns

Group (constants.characterGroupWhitespace, constants.characterGroupPunctuation, or undefined).

Types

This package is fully typed with [TypeScript][]. It exports no additional types.

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, micromark-util-classify-character@2, compatible with Node.js 16. This package works with micromark@3.

Security

This package is safe. See [security.md][securitymd] in [micromark/.github][health] for how to submit a security report.

Contribute

See [contributing.md][contributing] in [micromark/.github][health] for ways to get started. See [support.md][support] for ways to get help.

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

License

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

[build-badge]: https://github.com/micromark/micromark/workflows/main/badge.svg

[build]: https://github.com/micromark/micromark/actions

[coverage-badge]: https://img.shields.io/codecov/c/github/micromark/micromark.svg

[coverage]: https://codecov.io/github/micromark/micromark

[downloads-badge]: https://img.shields.io/npm/dm/micromark-util-classify-character.svg

[downloads]: https://www.npmjs.com/package/micromark-util-classify-character

[bundle-size-badge]: https://img.shields.io/badge/dynamic/json?label=minzipped%20size&query=$.size.compressedSize&url=https://deno.bundlejs.com/?q=micromark-util-classify-character

[bundle-size]: https://bundlejs.com/?q=micromark-util-classify-character

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

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

[opencollective]: https://opencollective.com/unified

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

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

[esmsh]: https://esm.sh

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

[chat]: https://github.com/micromark/micromark/discussions

[license]: https://github.com/micromark/micromark/blob/main/license

[author]: https://wooorm.com

[health]: https://github.com/micromark/.github

[securitymd]: https://github.com/micromark/.github/blob/main/security.md

[contributing]: https://github.com/micromark/.github/blob/main/contributing.md

[support]: https://github.com/micromark/.github/blob/main/support.md

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

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

[micromark]: https://github.com/micromark/micromark

[api-classify-character]: #classifycharactercode

📄 readme.md