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buffer-alloc
Advanced tools
Package description
The buffer-alloc package is a utility for allocating buffer memory in Node.js. It provides a way to create a buffer of a specified size filled with zeros or another specified value. This is particularly useful in scenarios where you need to ensure that newly allocated memory does not contain old or sensitive data. It mimics the Buffer.alloc method introduced in Node.js v5.10.0, offering a polyfill for older versions of Node.js or an alternative method for newer versions.
Allocating a buffer filled with zeros
This feature allows for the creation of a new buffer of a specified size, with each byte initialized to zero. It's useful for when you need a clean buffer with no pre-existing data.
const bufferAlloc = require('buffer-alloc');
const buffer = bufferAlloc(10); // creates a 10-byte buffer filled with zeros
Allocating a buffer filled with a specific value
This feature enables the creation of a buffer where each byte is initialized to a specific value provided by the user. This can be useful for initializing a buffer to a non-zero state for specific use cases.
const bufferAlloc = require('buffer-alloc');
const buffer = bufferAlloc(10, 0x1); // creates a 10-byte buffer filled with 0x1
Similar to buffer-alloc, buffer-from is designed to create a new Buffer instance from a variety of inputs (e.g., arrays, strings, or another buffer). While buffer-alloc focuses on allocating new memory, buffer-from provides more flexibility in creating buffers from existing data.
The safe-buffer package offers a safer version of the Node.js Buffer API, addressing security and usability concerns. It includes methods similar to buffer-alloc for creating buffers but adds additional checks and features to prevent common issues with buffer management in Node.js.
Readme
A ponyfill for Buffer.alloc
.
Works as Node.js: v7.0.0
Works on Node.js: v0.10.0
npm install --save buffer-alloc
const alloc = require('buffer-alloc')
console.log(alloc(4))
//=> <Buffer 00 00 00 00>
console.log(alloc(6, 0x41))
//=> <Buffer 41 41 41 41 41 41>
console.log(alloc(10, 'linus', 'utf8'))
//=> <Buffer 6c 69 6e 75 73 6c 69 6e 75 73>
size
<Integer> The desired length of the new Buffer
fill
<String> | <Buffer> | <Integer> A value to pre-fill the new Buffer
with. Default: 0
encoding
<String> If fill
is a string, this is its encoding. Default: 'utf8'
Allocates a new Buffer
of size
bytes. If fill
is undefined
, the Buffer
will be zero-filled.
Buffer.allocUnsafe
Buffer.fill
Buffer.from
FAQs
A [ponyfill](https://ponyfill.com) for `Buffer.alloc`.
The npm package buffer-alloc receives a total of 3,998,215 weekly downloads. As such, buffer-alloc popularity was classified as popular.
We found that buffer-alloc demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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