micromark-util-chunked

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[micromark][] utility to splice and push with giant arrays.

* What is this? * When should I use this? * Install * Use * API * push(list, items) * splice(list, start, remove, items) * Types * Compatibility * Security * Contribute * 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][]:

npm install micromark-util-chunked

In Deno with [esm.sh][esmsh]:

import {push, splice} from 'https://esm.sh/micromark-util-chunked@1'

In browsers with [esm.sh][esmsh]:

Use

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) — list to operate on * items (Array) — items to add to list

###### Returns

Either list or items (Array).

`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) — list to operate on * start (number) — index to remove/insert at (can be negative) * remove (number) — number of items to remove * items (Array) — 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]

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[coverage]: https://codecov.io/github/micromark/micromark

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[downloads]: https://www.npmjs.com/package/micromark-util-chunked

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[bundle-size]: https://bundlejs.com/?q=micromark-util-chunked

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[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

📄 readme.md