mdast utility to support hard breaks without needing spaces or escapes
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[mdast][] utility to support hard breaks without needing spaces or
escapes (turns enters into s).
* What is this?
* When should I use this?
* Install
* Use
* API
* newlineToBreak(tree)
* Syntax
* Syntax tree
* Types
* Compatibility
* Security
* Related
* Contribute
* License
This package is a utility that takes an [mdast][] tree and turns soft line
endings (enters) into hard breaks (s)
This package is used inside [remark-breaks][], which focusses on making it
easier to transform content by abstracting these internals away.
This plugin is useful if you want to display user content closer to how it was
authored, because when a user includes a line ending, it’ll show as such.
GitHub does this in a few places (comments, issues, PRs, and releases), but it’s
not semantic according to HTML and not compliant to markdown.
Markdown already has two ways to include hard breaks, namely trailing spaces and
escapes (note that ␠ represents a normal space):
``markdown
lorem␠␠
ipsum
lorem\
ipsum
`
Both will turn into s.
If you control who authors content or can document how markdown works, it’s
recommended to use escapes instead.
This package is [ESM only][esm].
In Node.js (version 16+), install with [npm][]:
`sh`
npm install mdast-util-newline-to-break
In Deno with [esm.sh][esmsh]:
`js`
import {newlineToBreak} from 'https://esm.sh/mdast-util-newline-to-break@2'
In browsers with [esm.sh][esmsh]:
`html`
Say we have the following file, example.md (note: there are no spaces aftera):
`markdown`
This is a
paragraph.
And our module, example.js, looks as follows:
`js
import fs from 'node:fs/promises'
import {fromMarkdown} from 'mdast-util-from-markdown'
import {newlineToBreak} from 'mdast-util-newline-to-break'
import {toMarkdown} from 'mdast-util-to-markdown'
const doc = await fs.readFile('example.md')
const tree = fromMarkdown(doc)
newlineToBreak(tree)
console.log(toMarkdown(tree))
`
Now, running node example.js yields:
`md`
This is a\
paragraph.
This package exports the identifier [newlineToBreak][api-newline-to-break].
There is no default export.
Turn normal line endings into hard breaks.
#### Parameters
* tree ([Node][node])
— tree to modify
This utility looks for markdown line endings (\r, \n, and \r\n).
This utility adds mdast [Break][break] nodes to the syntax tree.
These are the same nodes that represent breaks with spaces or escapes.
This package is fully typed with [TypeScript][].
There are no extra exported types.
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,
mdast-util-newline-to-break@^2, compatible with Node.js 16.
Use of mdast-util-newline-to-break does not involve [hast][] or user
content so there are no openings for [cross-site scripting (XSS)][xss] attacks.
* remark-breaks
— provide this utility as a [unified][] [remark][] plugin.
* remark-gfm
— support GFM (autolink literals, footnotes, strikethrough, tables,
tasklists)
* remark-github
— link references to commits, issues, and users, in the same way that
GitHub does
See [contributing.md][contributing] in [syntax-tree/.github][health] forsupport.md`][support] for ways to get help.
ways to get started.
See [
This project has a [code of conduct][coc].
By interacting with this repository, organization, or community you agree to
abide by its terms.
[MIT][license] © [Titus Wormer][author]
[build-badge]: https://github.com/syntax-tree/mdast-util-newline-to-break/workflows/main/badge.svg
[build]: https://github.com/syntax-tree/mdast-util-newline-to-break/actions
[coverage-badge]: https://img.shields.io/codecov/c/github/syntax-tree/mdast-util-newline-to-break.svg
[coverage]: https://codecov.io/github/syntax-tree/mdast-util-newline-to-break
[downloads-badge]: https://img.shields.io/npm/dm/mdast-util-newline-to-break.svg
[downloads]: https://www.npmjs.com/package/mdast-util-newline-to-break
[esm]: https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c
[size-badge]: https://img.shields.io/badge/dynamic/json?label=minzipped%20size&query=$.size.compressedSize&url=https://deno.bundlejs.com/?q=mdast-util-newline-to-break
[size]: https://bundlejs.com/?q=mdast-util-newline-to-break
[sponsors-badge]: https://opencollective.com/unified/sponsors/badge.svg
[backers-badge]: https://opencollective.com/unified/backers/badge.svg
[collective]: https://opencollective.com/unified
[chat-badge]: https://img.shields.io/badge/chat-discussions-success.svg
[chat]: https://github.com/orgs/syntax-tree/discussions
[mdast]: https://github.com/syntax-tree/mdast
[npm]: https://docs.npmjs.com/cli/install
[esmsh]: https://esm.sh
[health]: https://github.com/syntax-tree/.github
[contributing]: https://github.com/syntax-tree/.github/blob/main/contributing.md
[support]: https://github.com/syntax-tree/.github/blob/main/support.md
[coc]: https://github.com/syntax-tree/.github/blob/main/code-of-conduct.md
[license]: license
[author]: https://wooorm.com
[remark-breaks]: https://github.com/remarkjs/remark-breaks
[node]: https://github.com/syntax-tree/mdast#nodes
[xss]: https://en.wikipedia.org/wiki/Cross-site_scripting
[typescript]: https://www.typescriptlang.org
[hast]: https://github.com/syntax-tree/hast
[break]: https://github.com/syntax-tree/mdast#break
[remark]: https://github.com/remarkjs/remark
[api-newline-to-break]: #newlinetobreaktree
[unified]: https://github.com/unifiedjs/unified