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# mdast-util-to-string
[![Build][build-badge]][build]
[![Coverage][coverage-badge]][coverage]
[![Downloads][downloads-badge]][downloads]
[![Size][size-badge]][size]
[![Sponsors][sponsors-badge]][collective]
[![Backers][backers-badge]][collective]
[![Chat][chat-badge]][chat]
[mdast][] utility to get the text content of a node.
## Contents
* [What is this?](#what-is-this)
* [When should I use this?](#when-should-i-use-this)
* [Install](#install)
* [Use](#use)
* [API](#api)
* [`toString(value[, options])`](#tostringvalue-options)
* [`Options`](#options)
* [Types](#types)
* [Compatibility](#compatibility)
* [Security](#security)
* [Related](#related)
* [Contribute](#contribute)
* [License](#license)
## What is this?
This package is a tiny utility that gets the textual content of a node.
## When should I use this?
This utility is useful when you have a node, say a heading, and want to get the
text inside it.
This package does not serialize markdown, that’s what
[`mdast-util-to-markdown`][mdast-util-to-markdown] does.
Similar packages, [`hast-util-to-string`][hast-util-to-string] and
[`hast-util-to-text`][hast-util-to-text], do the same but on [hast][].
## Install
This package is [ESM only][esm].
In Node.js (version 14.14+ and 16.0+), install with [npm][]:
```sh
npm install mdast-util-to-string
```
In Deno with [`esm.sh`][esmsh]:
```js
import {toString} from 'https://esm.sh/mdast-util-to-string@3'
```
In browsers with [`esm.sh`][esmsh]:
```html
<script type="module">
import {toString} from 'https://esm.sh/mdast-util-to-string@3?bundle'
</script>
```
## Use
```js
import {unified} from 'unified'
import {fromMarkdown} from 'mdast-util-from-markdown'
import {toString} from 'mdast-util-to-string'
const tree = fromMarkdown('Some _emphasis_, **importance**, and `code`.')
console.log(toString(tree)) // => 'Some emphasis, importance, and code.'
```
## API
This package exports the identifier [`toString`][api-tostring].
There is no default export.
### `toString(value[, options])`
Get the text content of a node or list of nodes.
Prefers the node’s plain-text fields, otherwise serializes its children,
and if the given value is an array, serialize the nodes in it.
###### Parameters
* `value` (`unknown`)
— thing to serialize, typically [`Node`][node]
* `options` ([`Options`][api-options], optional)
— configuration
###### Returns
Serialized `value` (`string`).
### `Options`
Configuration (TypeScript type).
###### Fields
* `includeImageAlt` (`boolean`, default: `true`)
— whether to use `alt` for `image`s
* `includeHtml` (`boolean`, default: `true`)
— whether to use `value` of HTML
## Types
This package is fully typed with [TypeScript][].
It exports the additional type [`Options`][api-options].
## Compatibility
Projects maintained by the unified collective are compatible with all maintained
versions of Node.js.
As of now, that is Node.js 14.14+ and 16.0+.
Our projects sometimes work with older versions, but this is not guaranteed.
## Security
Use of `mdast-util-to-string` does not involve **[hast][]**, user content, or
change the tree, so there are no openings for [cross-site scripting (XSS)][xss]
attacks.
## Related
* [`hast-util-to-string`](https://github.com/wooorm/rehype-minify/tree/main/packages/hast-util-to-string)
— get text content in hast
* [`hast-util-to-text`](https://github.com/syntax-tree/hast-util-to-text)
— get text content in hast according to the `innerText` algorithm
## Contribute
See [`contributing.md`][contributing] in [`syntax-tree/.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, organization, or community you agree to
abide by its terms.
## License
[MIT][license] © [Titus Wormer][author]
<!-- Definitions -->
[build-badge]: https://github.com/syntax-tree/mdast-util-to-string/workflows/main/badge.svg
[build]: https://github.com/syntax-tree/mdast-util-to-string/actions
[coverage-badge]: https://img.shields.io/codecov/c/github/syntax-tree/mdast-util-to-string.svg
[coverage]: https://codecov.io/github/syntax-tree/mdast-util-to-string
[downloads-badge]: https://img.shields.io/npm/dm/mdast-util-to-string.svg
[downloads]: https://www.npmjs.com/package/mdast-util-to-string
[size-badge]: https://img.shields.io/bundlephobia/minzip/mdast-util-to-string.svg
[size]: https://bundlephobia.com/result?p=mdast-util-to-string
[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/syntax-tree/unist/discussions
[npm]: https://docs.npmjs.com/cli/install
[esm]: https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c
[esmsh]: https://esm.sh
[typescript]: https://www.typescriptlang.org
[license]: license
[author]: https://wooorm.com
[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
[mdast]: https://github.com/syntax-tree/mdast
[mdast-util-to-markdown]: https://github.com/syntax-tree/mdast-util-to-markdown
[hast]: https://github.com/syntax-tree/hast
[hast-util-to-string]: https://github.com/rehypejs/rehype-minify/tree/main/packages/hast-util-to-string
[hast-util-to-text]: https://github.com/syntax-tree/hast-util-to-text
[node]: https://github.com/syntax-tree/mdast#nodes
[xss]: https://en.wikipedia.org/wiki/Cross-site_scripting
[api-tostring]: #tostringvalue-options
[api-options]: #options
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