unified

Project: remarkjs/remark-yaml-config

Package: remark-yaml-config@6.0.1

  1. Dependents: 0
  2. remark plugin to configure it with YAML frontmatter
  1. remark 199
  2. unified 181
  3. markdown 145
  4. plugin 138
  5. mdast 86
  6. remark-plugin 70
  7. yaml 7
  8. frontmatter 7
  9. options 2
  10. config 2
  11. settings 2

remark-yaml-config

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remark plugin to configure it with YAML frontmatter.

Contents

What is this?

This package is a unified (remark) plugin to configure remark (specifically, how remark-stringify formats markdown) from YAML frontmatter.

unified is a project that transforms content with abstract syntax trees (ASTs). remark adds support for markdown to unified. mdast is the markdown AST that remark uses. This is a remark plugin that configures how remark-stringify serializes mdast.

When should I use this?

This project is useful when you want to change how markdown is formatted from within a file. You can use this when you trust authors and want to give them control.

This plugin is very similar to the alternative remark-comment-config. The difference is that that plugin uses comments, which can come anywhere in the document, whereas this plugin uses YAML frontmatter, which comes at the start of documents.

Install

This package is ESM only. In Node.js (version 12.20+, 14.14+, or 16.0+), install with npm:

npm install remark-yaml-config

In Deno with esm.sh:

import remarkYamlConfig from 'https://esm.sh/remark-yaml-config@6'

In browsers with esm.sh:

<script type="module">
  import remarkYamlConfig from 'https://esm.sh/remark-yaml-config@6?bundle'
</script>

Use

Say we have the following file example.md:

---
remark:
  bullet: "+"
---

-   Hello

And our module example.js looks as follows:

import {read} from 'to-vfile'
import {remark} from 'remark'
import remarkFrontmatter from 'remark-frontmatter'
import remarkYamlConfig from 'remark-yaml-config'

main()

async function main() {
  const file = await remark()
    .use(remarkFrontmatter)
    .use(remarkYamlConfig)
    .process(await read('example.md'))

  console.log(String(file))
}

⚠️ Important: remark-frontmatter is required to support YAML frontmatter in markdown.

Now running node example.js yields:

---
remark:
  bullet: "*"
---

+   Hello

API

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

unified().use(remarkYamlConfig)

Configure remark with YAML frontmatter. There are no options

Parses YAML frontmatter and takes the value of the remark field as settings. The settings are passed to remark-stringify.

Types

This package is fully typed with TypeScript. There are no extra exported types.

Compatibility

Projects maintained by the unified collective are compatible with all maintained versions of Node.js. As of now, that is Node.js 12.20+, 14.14+, and 16.0+. Our projects sometimes work with older versions, but this is not guaranteed.

This plugin works with remark version 13+. Version 5 (and lower) worked with older versions of remark.

Security

Use of remark-yaml-config can change how markdown is parsed or compiled. If the markdown is user provided, this may open you up to a cross-site scripting (XSS) attack.

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