# extra-array-view

> An array view is a proxy to an underlying array.

Latest version **1.1.1** (published 2025-04-08) · MIT license · 0 weekly downloads

## Install

```sh
npm install extra-array-view
pnpm add extra-array-view
yarn add extra-array-view
bun add extra-array-view
```

## Health

**Score 40/100 (D)** — status: maintenance-mode.

Positive: has types; esm support; no vulnerabilities; high quality score.

Warnings: low downloads.

Negative: stale; low maintenance score.

## Facts

| | |
|---|---|
| Version | 1.1.1 |
| Published | 2025-04-08 |
| First published | 2023-05-10 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | bundled |
| Module format | ESM + CommonJS |
| Dependencies | 0 |
| Unpacked size | 14.8 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 0 |
| Author | wolfram77@gmail.com |
| Maintainers | wolfram77 |
| Keywords | extra, array, view, from, fromArray |

## Links

- npm: https://www.npmjs.com/package/extra-array-view
- Repository: https://github.com/nodef/extra-array-view
- Homepage: https://github.com/nodef/extra-array-view#readme
- Issues: https://github.com/nodef/extra-array-view/issues
- npm.io page: https://npm.io/package/extra-array-view

## Recent versions

- 1.1.1 (latest) — 2025-04-08
- 1.1.0 — 2024-09-29
- 1.0.1 — 2023-05-10
- 1.0.0 — 2023-05-10
- 0.1.1 — 2023-05-10
- 0.1.0 — 2023-05-10
- 0.0.41 — 2023-05-10
- 0.0.40 — 2023-05-10
- 0.0.39 — 2023-05-10
- 0.0.38 — 2023-05-10
- 0.0.37 — 2023-05-10
- 0.0.36 — 2023-05-10
- 0.0.35 — 2023-05-10
- 0.0.34 — 2023-05-10
- 0.0.33 — 2023-05-10
- … 18 more at https://npm.io/package/extra-array-view/versions

## README

An [array view] is a proxy to an underlying array.<br>
📦 [Node.js](https://www.npmjs.com/package/extra-array-view),
🌐 [Web](https://www.npmjs.com/package/extra-array-view.web),
📜 [Files](https://unpkg.com/extra-array-view/),
📰 [Docs](https://nodef.github.io/extra-array-view/),
📘 [Wiki](https://github.com/nodef/extra-array-view/wiki/).

<br>


This package provides a **view** to an underlying array. It is a proxy of the
array, and any changes made to it are reflected in the underlying array. It is
similar to a *slice* of an array, but it does not copy the array. To obtain a
view, use the `fromArray()` function.

With this package, you can simplify the implementation of complex algorithms.
Try it out today! This package is available in *Node.js* and *Web* formats. To
use it on the web, simply use the `extra_array_view` global variable after
loading with a `<script>` tag from the [jsDelivr CDN].

> Stability: [Experimental](https://www.youtube.com/watch?v=L1j93RnIxEo).

[array view]: https://stackoverflow.com/questions/16990064/are-array-views-possible
[jsDelivr CDN]: https://cdn.jsdelivr.net/npm/extra-array-view.web/index.js

<br>

```javascript
const xarrayView = require('extra-array-view');
// import * as xarrayView from "extra-array-view";
// import * as xarrayView from "https://unpkg.com/extra-array-view/index.mjs"; (deno)

var x = [10, 40, 30, 20, 50];
var y = xarrayView.fromArray(x, 1, 4);

y[0];
// → 40

y[1];
// → 30

y.at(-1);
// → 20

y.sort();
x;
// → [ 10, 20, 30, 40, 50 ]

y.reverse();
x;
// → [ 10, 40, 30, 20, 50 ]

y.fill(0);
x;
// → [ 10, 0, 0, 0, 50 ]
```

<br>
<br>


## Index

| Property | Description |
|  ----  |  ----  |
| [fromArray] | Convert array range to array view. |


<br>
<br>


## References

- [negative-array - npm : Sindre Sorhus](https://www.npmjs.com/package/negative-array)
- [TypedArray : MDN Web Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray)
- [Array : MDN Web Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)
- [Proxy : MDN Web Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy)
- [Operator overloading in JavaScript : Saad Quadri](https://www.proposals.es/proposals/Operator%20overloading)
- [How would you overload the [] operator in javascript](https://stackoverflow.com/a/25658975/1413259)
- [Check if value is a Symbol in JavaScript](https://stackoverflow.com/a/46479190/1413259)
- [how to get an array out of a javascript proxy](https://stackoverflow.com/a/71645169/1413259)

<br>
<br>

[![](https://img.youtube.com/vi/z0ttvjJvh2s/maxresdefault.jpg)](https://www.youtube.com/watch?v=z0ttvjJvh2s)<br>
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[![Test Coverage](https://api.codeclimate.com/v1/badges/b5039bd76147c1625bce/test_coverage)](https://codeclimate.com/github/nodef/extra-array-view/test_coverage)
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[fromArray]: https://github.com/nodef/extra-array-view/wiki/fromArray

---
_Source: https://npm.io/package/extra-array-view · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._