site/node_modules/micromark-util-chunked/readme.md

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# micromark-util-chunked
[![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 splice and push with giant arrays.
## Contents
* [What is this?](#what-is-this)
* [When should I use this?](#when-should-i-use-this)
* [Install](#install)
* [Use](#use)
* [API](#api)
* [`push(list, items)`](#pushlist-items)
* [`splice(list, start, remove, items)`](#splicelist-start-remove-items)
* [Types](#types)
* [Compatibility](#compatibility)
* [Security](#security)
* [Contribute](#contribute)
* [License](#license)
## What is this?
This package exposes an algorithm to splice for giant arrays, which V8 bugs
out on.
## 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][]:
```sh
npm install micromark-util-chunked
```
In Deno with [`esm.sh`][esmsh]:
```js
import {push, splice} from 'https://esm.sh/micromark-util-chunked@1'
```
In browsers with [`esm.sh`][esmsh]:
```html
<script type="module">
import {push, splice} from 'https://esm.sh/micromark-util-chunked@1?bundle'
</script>
```
## Use
```js
import {push, splice} from 'micromark-util-chunked'
// …
nextEvents = push(nextEvents, [
['enter', events[open][1], context],
['exit', events[open][1], context]
])
// …
splice(events, open - 1, index - open + 3, nextEvents)
// …
```
## API
This module exports the identifiers [`push`][api-push]
and [`splice`][api-splice].
There is no default export.
### `push(list, items)`
Append `items` (an array) at the end of `list` (another array).
When `list` was empty, returns `items` instead.
This prevents a potentially expensive operation when `list` is empty,
and adds items in batches to prevent V8 from hanging.
###### Parameters
* `list` (`Array<unknown>`)
— list to operate on
* `items` (`Array<unknown>`)
— items to add to `list`
###### Returns
Either `list` or `items` (`Array<unknown>`).
### `splice(list, start, remove, items)`
Like `Array#splice`, but smarter for giant arrays.
`Array#splice` takes all items to be inserted as individual argument which
causes a stack overflow in V8 when trying to insert 100k items for instance.
Otherwise, this does not return the removed items, and takes `items` as an
array instead of rest parameters.
###### Parameters
* `list` (`Array<unknown>`)
— list to operate on
* `start` (`number`)
— index to remove/insert at (can be negative)
* `remove` (`number`)
— number of items to remove
* `items` (`Array<unknown>`)
— items to inject into `list`
###### Returns
Nothing (`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-chunked@^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]
<!-- Definitions -->
[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-chunked.svg
[downloads]: https://www.npmjs.com/package/micromark-util-chunked
[bundle-size-badge]: https://img.shields.io/badge/dynamic/json?label=minzipped%20size&query=$.size.compressedSize&url=https://deno.bundlejs.com/?q=micromark-util-chunked
[bundle-size]: https://bundlejs.com/?q=micromark-util-chunked
[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-push]: #pushlist-items
[api-splice]: #splicelist-start-remove-items