npm package: @stdlib/buffer-alloc-unsafe
Description: Allocate a buffer having a specified number of bytes.
Author: The Stdlib Authors
Latest version: 0.2.3

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<details>
  <summary>
    About stdlib...
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# allocUnsafe

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] -->

> Allocate a [buffer][@stdlib/buffer/ctor] having a specified number of bytes.

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<section class="intro">

</section>

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<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/buffer-alloc-unsafe
```

</section>

<section class="usage">

## Usage

```javascript
var allocUnsafe = require( '@stdlib/buffer-alloc-unsafe' );
```

#### allocUnsafe( size )

**Unsafely** allocates a [buffer][@stdlib/buffer/ctor] having a specified number of bytes.

```javascript
var buf = allocUnsafe( 10 );
// returns <Buffer>
```

</section>

<!-- /.usage -->

<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="notes">

## Notes

-   The underlying memory of returned [`Buffer`][@stdlib/buffer/ctor] instances is **not** initialized. Memory contents are unknown and may contain **sensitive** data.
-   When the `size` is less than half the pool size (specified on the [`Buffer`][@stdlib/buffer/ctor] constructor in modern Node.js environments), memory is allocated from the [`Buffer`][@stdlib/buffer/ctor] pool for faster allocation of new [`Buffer`][@stdlib/buffer/ctor] instances.

</section>

<!-- /.notes -->

<!-- Package usage examples. -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var allocUnsafe = require( '@stdlib/buffer-alloc-unsafe' );

var buf;
var i;

// Repeatedly unsafely allocate memory and inspect the buffer contents...
for ( i = 0; i < 100; i++ ) {
    buf = allocUnsafe( 100 );
    console.log( buf.toString() );
}
```

</section>

<!-- /.examples -->

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<section class="references">

</section>

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<section class="related">

* * *

## See Also

-   <span class="package-name">[`@stdlib/buffer-ctor`][@stdlib/buffer/ctor]</span><span class="delimiter">: </span><span class="description">Buffer.</span>
-   <span class="package-name">[`@stdlib/buffer-from-array`][@stdlib/buffer/from-array]</span><span class="delimiter">: </span><span class="description">allocate a buffer using an octet array.</span>
-   <span class="package-name">[`@stdlib/buffer-from-arraybuffer`][@stdlib/buffer/from-arraybuffer]</span><span class="delimiter">: </span><span class="description">allocate a buffer from an ArrayBuffer.</span>
-   <span class="package-name">[`@stdlib/buffer-from-buffer`][@stdlib/buffer/from-buffer]</span><span class="delimiter">: </span><span class="description">copy buffer data to a new Buffer instance.</span>
-   <span class="package-name">[`@stdlib/buffer-from-string`][@stdlib/buffer/from-string]</span><span class="delimiter">: </span><span class="description">allocate a buffer containing a provided string.</span>

</section>

<!-- /.related -->

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<section class="main-repo" >

* * *

## Notice

This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].

#### Community

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

</section>

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[npm-url]: https://npmjs.org/package/@stdlib/buffer-alloc-unsafe

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[test-url]: https://github.com/stdlib-js/buffer-alloc-unsafe/actions/workflows/test.yml?query=branch:v0.2.3

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[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules

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[deno-readme]: https://github.com/stdlib-js/buffer-alloc-unsafe/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/buffer-alloc-unsafe/tree/umd
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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/buffer-alloc-unsafe/main/LICENSE

<!-- <related-links> -->

[@stdlib/buffer/ctor]: https://www.npmjs.com/package/@stdlib/buffer-ctor

[@stdlib/buffer/from-array]: https://www.npmjs.com/package/@stdlib/buffer-from-array

[@stdlib/buffer/from-arraybuffer]: https://www.npmjs.com/package/@stdlib/buffer-from-arraybuffer

[@stdlib/buffer/from-buffer]: https://www.npmjs.com/package/@stdlib/buffer-from-buffer

[@stdlib/buffer/from-string]: https://www.npmjs.com/package/@stdlib/buffer-from-string

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