remark-stringify

remark-stringify

Compiler for unified. Serializes mdast syntax trees to markdown. Used in the remark processor but can be used on its own as well. Can be extended to change how markdown is serialized.

Install

This package is ESM only: Node 12+ is needed to use it and it must be imported instead of required.

npm:

npm install remark-stringify

Use

import {unified} from 'unified'
import rehypeParse from 'rehype-parse'
import rehypeRemark from 'rehype-remark'
import remarkStringify from 'remark-stringify'

unified()
  .use(rehypeParse)
  .use(rehypeRemark)
  .use(remarkStringify, {
    bullet: '*',
    fence: '~',
    fences: true,
    incrementListMarker: false
  })
  .process('<h1>Hello, world!</h1>')
  .then((file) => {
    console.log(String(file))
  })

Yields:

# Hello, world!

See unified for more examples »

API

See unified for API docs »

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

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

Configure the processor to serialize mdast syntax trees to markdown.

options

Options can be passed directly or passed later through processor.data().

All the formatting options of mdast-util-to-markdown are supported and will be passed through.

Extending the compiler

See mdast-util-to-markdown. Then create a wrapper plugin such as remark-gfm.

Security

remark-stringify will do its best to serialize markdown to match the syntax tree, but there are several cases where that is impossible. It’ll do its best, but complete roundtripping is impossible given that any value could be injected into the tree.

As markdown is sometimes used for HTML, and improper use of HTML can open you up to a cross-site scripting (XSS) attack, use of remark-stringify and parsing it again later can potentially be unsafe. When parsing markdown afterwards, use remark in combination with the rehype ecosystem, and use rehype-sanitize to make the tree safe.

Use of remark plugins could also open you up to other attacks. Carefully assess each plugin and the risks involved in using them.

Contribute

See contributing.md in remarkjs/.github for ways to get started. See support.md for ways to get help. Ideas for new plugins and tools can be posted in remarkjs/ideas.

A curated list of awesome remark resources can be found in awesome remark.

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

Sponsor

Support this effort and give back by sponsoring on OpenCollective!

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License

MIT © Titus Wormer