buffer-from

A ponyfill for Buffer.from, uses native implementation if available.

License
MIT
Deps
0
Install Size
5 kB
Vulns
0
Published

Get started

$npm install buffer-from
$pnpm add buffer-from
$yarn add buffer-from
$bun add buffer-from
$deno add npm:buffer-from
$vlt install buffer-from
$vp add buffer-from
$npm install -D @types/buffer-fromView @types/buffer-from
$pnpm add -D @types/buffer-fromView @types/buffer-from
$yarn add -D @types/buffer-fromView @types/buffer-from
$bun add -d @types/buffer-fromView @types/buffer-from
$deno add -D npm:@types/buffer-fromView @types/buffer-from
$vlt install -D @types/buffer-fromView @types/buffer-from
$vp add -D @types/buffer-fromView @types/buffer-from

You might not need this dependency.

This package can be replaced with Buffer.from, available since Node 0.1.90.Learn more

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1.1.2
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Readme

Buffer From

A ponyfill for Buffer.from, uses native implementation if available.

Installation

npm install --save buffer-from

Usage

const bufferFrom = require('buffer-from')

console.log(bufferFrom([1, 2, 3, 4]))
//=> <Buffer 01 02 03 04>

const arr = new Uint8Array([1, 2, 3, 4])
console.log(bufferFrom(arr.buffer, 1, 2))
//=> <Buffer 02 03>

console.log(bufferFrom('test', 'utf8'))
//=> <Buffer 74 65 73 74>

const buf = bufferFrom('test')
console.log(bufferFrom(buf))
//=> <Buffer 74 65 73 74>

API

bufferFrom(array)
  • array <Array>

Allocates a new Buffer using an array of octets.

bufferFrom(arrayBuffer[, byteOffset[, length]])
  • arrayBuffer <ArrayBuffer> The .buffer property of a TypedArray or ArrayBuffer
  • byteOffset <Integer> Where to start copying from arrayBuffer. Default: 0
  • length <Integer> How many bytes to copy from arrayBuffer. Default: arrayBuffer.length - byteOffset

When passed a reference to the .buffer property of a TypedArray instance, the newly created Buffer will share the same allocated memory as the TypedArray.

The optional byteOffset and length arguments specify a memory range within the arrayBuffer that will be shared by the Buffer.

bufferFrom(buffer)
  • buffer <Buffer> An existing Buffer to copy data from

Copies the passed buffer data onto a new Buffer instance.

bufferFrom(string[, encoding])
  • string <String> A string to encode.
  • encoding <String> The encoding of string. Default: 'utf8'

Creates a new Buffer containing the given JavaScript string string. If provided, the encoding parameter identifies the character encoding of string.

See also