# copyBuffer
[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url]
> Copy [buffer][@stdlib/buffer/ctor] data to a new [`Buffer`][@stdlib/buffer/ctor] instance.
## Installation
```bash
npm install @stdlib/buffer-from-buffer
```
## Usage
```javascript
var copyBuffer = require( '@stdlib/buffer-from-buffer' );
```
#### copyBuffer( buffer )
Copies [buffer][@stdlib/buffer/ctor] data to a new [`Buffer`][@stdlib/buffer/ctor] instance.
```javascript
var array2buffer = require( '@stdlib/buffer-from-array' );
var b1 = array2buffer( [ 1, 2, 3, 4 ] );
// returns [ 1, 2, 3, 4 ]
var b2 = copyBuffer( b1 );
// returns [ 1, 2, 3, 4 ]
```
## Examples
```javascript
var allocUnsafe = require( '@stdlib/buffer-alloc-unsafe' );
var copyBuffer = require( '@stdlib/buffer-from-buffer' );
var bool;
var b1;
var b2;
var i;
// Allocate a new buffer:
b1 = allocUnsafe( 10 );
// Generate a new buffer from the existing buffer:
b2 = copyBuffer( b1 );
bool = ( b2 === b1 );
// returns false
bool = ( b2.length === b1.length );
// returns true
for ( i = 0; i < b2.length; i++ ) {
console.log( b2[ i ] === b1[ i ] );
// => true
}
```
* * *
## 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 © 2016-2022. The Stdlib [Authors][stdlib-authors].
[npm-image]: http://img.shields.io/npm/v/@stdlib/buffer-from-buffer.svg
[npm-url]: https://npmjs.org/package/@stdlib/buffer-from-buffer
[test-image]: https://github.com/stdlib-js/buffer-from-buffer/actions/workflows/test.yml/badge.svg
[test-url]: https://github.com/stdlib-js/buffer-from-buffer/actions/workflows/test.yml
[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/buffer-from-buffer/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/buffer-from-buffer?branch=main
[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules
[deno-url]: https://github.com/stdlib-js/buffer-from-buffer/tree/deno
[umd-url]: https://github.com/stdlib-js/buffer-from-buffer/tree/umd
[esm-url]: https://github.com/stdlib-js/buffer-from-buffer/tree/esm
[chat-image]: https://img.shields.io/gitter/room/stdlib-js/stdlib.svg
[chat-url]: https://gitter.im/stdlib-js/stdlib/
[stdlib]: https://github.com/stdlib-js/stdlib
[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/buffer-from-buffer/main/LICENSE
[@stdlib/buffer/alloc-unsafe]: https://www.npmjs.com/package/@stdlib/buffer-alloc-unsafe
[@stdlib/buffer/ctor]: https://www.npmjs.com/package/@stdlib/buffer-ctor