Product
Introducing Enhanced Alert Actions and Triage Functionality
Socket now supports four distinct alert actions instead of the previous two, and alert triaging allows users to override the actions taken for all individual alerts.
native-buffer-browserify
Advanced tools
Readme
With browserify, simply require('buffer')
or use the Buffer
global and you will get this module.
The goal is to provide an API that is 100% identical to node's Buffer API. Read the official docs for the full list of properties, instance methods, and class methods that are supported.
Uint8Array
/ArrayBuffer
, not Object
).slice()
returns instances of the same type (Buffer)buf[4]
notation works, even in old browsers like IE6!window
To use this module directly (without browserify), install it:
npm install buffer
This module was previously called native-buffer-browserify, but please use buffer from now on.
The module's API is identical to node's Buffer
API. Read the
official docs for the full list of properties,
instance methods, and class methods that are supported.
As mentioned above, require('buffer')
or use the Buffer
global with
browserify and this module will automatically be included
in your bundle. Almost any npm module will work in the browser, even if it assumes that
the node Buffer
API will be available.
To depend on this module explicitly (without browserify), require it like this:
var Buffer = require('buffer/').Buffer // note: the trailing slash is important!
To require this module explicitly, use require('buffer/')
which tells the node.js module
lookup algorithm (also used by browserify) to use the npm module named buffer
instead of the node.js core module named buffer
!
The Buffer
constructor returns instances of Uint8Array
that are augmented with function properties for all the Buffer
API functions. We use Uint8Array
so that square bracket notation works as expected -- it returns a single octet. By augmenting the instances, we can avoid modifying the Uint8Array
prototype.
Buffer.isBuffer
instead of instanceof Buffer
The Buffer constructor returns a Uint8Array
(with all the Buffer methods added as
properties on the instance) for performance reasons, so instanceof Buffer
won't work. In
node, you can use either Buffer.isBuffer
or instanceof Buffer
to check if an object
is a Buffer
. But, in the browser you must use Buffer.isBuffer
to detect the special
Uint8Array
-based Buffers.
buf.slice()
does not modify parent buffer's memory in old browsersIf you only support modern browsers (specifically, those with typed array support), then this issue does not affect you.
In node, the slice()
method returns a new Buffer
that shares underlying memory with
the original Buffer. When you modify one buffer, you modify the other. Read more.
This works correctly in browsers with typed array support (* with the exception of Firefox older than version 30). Browsers that lack typed arrays get an alternate buffer implementation based on Object
which has no mechanism to point separate Buffer
s to the same underlying slab of memory.
* Firefox older than version 30 gets the Object
implementation -- not the typed arrays one -- because of this
bug (now fixed!) that made it impossible to add properties to a typed array.
This module tracks the Buffer API in the latest (unstable) version of node.js. The Buffer API is considered stable in the node stability index, so it is unlikely that there will ever be breaking changes. Nonetheless, when/if the Buffer API changes in node, this module's API will change accordingly.
See perf tests in /perf
.
BrowserBuffer
is the browser buffer
module (this repo). Uint8Array
is included as a
sanity check (since BrowserBuffer
uses Uint8Array
under the hood, Uint8Array
will
always be at least a bit faster). Finally, NodeBuffer
is the node.js buffer module,
which is included to compare against.
Method | Operations | Accuracy | Sampled | Fastest |
---|---|---|---|---|
BrowserBuffer#bracket-notation | 11,457,464 ops/sec | ±0.86% | 66 | ✓ |
Uint8Array#bracket-notation | 10,824,332 ops/sec | ±0.74% | 65 | |
BrowserBuffer#concat | 450,532 ops/sec | ±0.76% | 68 | |
Uint8Array#concat | 1,368,911 ops/sec | ±1.50% | 62 | ✓ |
BrowserBuffer#copy(16000) | 903,001 ops/sec | ±0.96% | 67 | |
Uint8Array#copy(16000) | 1,422,441 ops/sec | ±1.04% | 66 | ✓ |
BrowserBuffer#copy(16) | 11,431,358 ops/sec | ±0.46% | 69 | |
Uint8Array#copy(16) | 13,944,163 ops/sec | ±1.12% | 68 | ✓ |
BrowserBuffer#new(16000) | 106,329 ops/sec | ±6.70% | 44 | |
Uint8Array#new(16000) | 131,001 ops/sec | ±2.85% | 31 | ✓ |
BrowserBuffer#new(16) | 1,554,491 ops/sec | ±1.60% | 65 | |
Uint8Array#new(16) | 6,623,930 ops/sec | ±1.66% | 65 | ✓ |
BrowserBuffer#readDoubleBE | 112,830 ops/sec | ±0.51% | 69 | ✓ |
DataView#getFloat64 | 93,500 ops/sec | ±0.57% | 68 | |
BrowserBuffer#readFloatBE | 146,678 ops/sec | ±0.95% | 68 | ✓ |
DataView#getFloat32 | 99,311 ops/sec | ±0.41% | 67 | |
BrowserBuffer#readUInt32LE | 843,214 ops/sec | ±0.70% | 69 | ✓ |
DataView#getUint32 | 103,024 ops/sec | ±0.64% | 67 | |
BrowserBuffer#slice | 1,013,941 ops/sec | ±0.75% | 67 | |
Uint8Array#subarray | 1,903,928 ops/sec | ±0.53% | 67 | ✓ |
BrowserBuffer#writeFloatBE | 61,387 ops/sec | ±0.90% | 67 | |
DataView#setFloat32 | 141,249 ops/sec | ±0.40% | 66 | ✓ |
Method | Operations | Accuracy | Sampled | Fastest |
---|---|---|---|---|
BrowserBuffer#bracket-notation | 20,800,421 ops/sec | ±1.84% | 60 | |
Uint8Array#bracket-notation | 20,826,235 ops/sec | ±2.02% | 61 | ✓ |
BrowserBuffer#concat | 153,076 ops/sec | ±2.32% | 61 | |
Uint8Array#concat | 1,255,674 ops/sec | ±8.65% | 52 | ✓ |
BrowserBuffer#copy(16000) | 1,105,312 ops/sec | ±1.16% | 63 | |
Uint8Array#copy(16000) | 1,615,911 ops/sec | ±0.55% | 66 | ✓ |
BrowserBuffer#copy(16) | 16,357,599 ops/sec | ±0.73% | 68 | |
Uint8Array#copy(16) | 31,436,281 ops/sec | ±1.05% | 68 | ✓ |
BrowserBuffer#new(16000) | 52,995 ops/sec | ±6.01% | 35 | |
Uint8Array#new(16000) | 87,686 ops/sec | ±5.68% | 45 | ✓ |
BrowserBuffer#new(16) | 252,031 ops/sec | ±1.61% | 66 | |
Uint8Array#new(16) | 8,477,026 ops/sec | ±0.49% | 68 | ✓ |
BrowserBuffer#readDoubleBE | 99,871 ops/sec | ±0.41% | 69 | |
DataView#getFloat64 | 285,663 ops/sec | ±0.70% | 68 | ✓ |
BrowserBuffer#readFloatBE | 115,540 ops/sec | ±0.42% | 69 | |
DataView#getFloat32 | 288,722 ops/sec | ±0.82% | 68 | ✓ |
BrowserBuffer#readUInt32LE | 633,926 ops/sec | ±1.08% | 67 | ✓ |
DataView#getUint32 | 294,808 ops/sec | ±0.79% | 64 | |
BrowserBuffer#slice | 349,425 ops/sec | ±0.46% | 69 | |
Uint8Array#subarray | 5,965,819 ops/sec | ±0.60% | 65 | ✓ |
BrowserBuffer#writeFloatBE | 59,980 ops/sec | ±0.41% | 67 | |
DataView#setFloat32 | 317,634 ops/sec | ±0.63% | 68 | ✓ |
Method | Operations | Accuracy | Sampled | Fastest |
---|---|---|---|---|
BrowserBuffer#bracket-notation | 10,279,729 ops/sec | ±2.25% | 56 | ✓ |
Uint8Array#bracket-notation | 10,030,767 ops/sec | ±2.23% | 59 | |
BrowserBuffer#concat | 144,138 ops/sec | ±1.38% | 65 | |
Uint8Array#concat | 4,950,764 ops/sec | ±1.70% | 63 | ✓ |
BrowserBuffer#copy(16000) | 1,058,548 ops/sec | ±1.51% | 64 | |
Uint8Array#copy(16000) | 1,409,666 ops/sec | ±1.17% | 65 | ✓ |
BrowserBuffer#copy(16) | 6,282,529 ops/sec | ±1.88% | 58 | |
Uint8Array#copy(16) | 11,907,128 ops/sec | ±2.87% | 58 | ✓ |
BrowserBuffer#new(16000) | 101,663 ops/sec | ±3.89% | 57 | |
Uint8Array#new(16000) | 22,050,818 ops/sec | ±6.51% | 46 | ✓ |
BrowserBuffer#new(16) | 176,072 ops/sec | ±2.13% | 64 | |
Uint8Array#new(16) | 24,385,731 ops/sec | ±5.01% | 51 | ✓ |
BrowserBuffer#readDoubleBE | 41,341 ops/sec | ±1.06% | 67 | |
DataView#getFloat64 | 322,280 ops/sec | ±0.84% | 68 | ✓ |
BrowserBuffer#readFloatBE | 46,141 ops/sec | ±1.06% | 65 | |
DataView#getFloat32 | 337,025 ops/sec | ±0.43% | 69 | ✓ |
BrowserBuffer#readUInt32LE | 151,551 ops/sec | ±1.02% | 66 | |
DataView#getUint32 | 308,278 ops/sec | ±0.94% | 67 | ✓ |
BrowserBuffer#slice | 197,365 ops/sec | ±0.95% | 66 | |
Uint8Array#subarray | 9,558,024 ops/sec | ±3.08% | 58 | ✓ |
BrowserBuffer#writeFloatBE | 17,518 ops/sec | ±1.03% | 63 | |
DataView#setFloat32 | 319,751 ops/sec | ±0.48% | 68 | ✓ |
Method | Operations | Accuracy | Sampled | Fastest |
---|---|---|---|---|
BrowserBuffer#bracket-notation | 10,489,828 ops/sec | ±3.25% | 90 | |
Uint8Array#bracket-notation | 10,534,884 ops/sec | ±0.81% | 92 | ✓ |
NodeBuffer#bracket-notation | 10,389,910 ops/sec | ±0.97% | 87 | |
BrowserBuffer#concat | 487,830 ops/sec | ±2.58% | 88 | |
Uint8Array#concat | 1,814,327 ops/sec | ±1.28% | 88 | ✓ |
NodeBuffer#concat | 1,636,523 ops/sec | ±1.88% | 73 | |
BrowserBuffer#copy(16000) | 1,073,665 ops/sec | ±0.77% | 90 | |
Uint8Array#copy(16000) | 1,348,517 ops/sec | ±0.84% | 89 | ✓ |
NodeBuffer#copy(16000) | 1,289,533 ops/sec | ±0.82% | 93 | |
BrowserBuffer#copy(16) | 12,782,706 ops/sec | ±0.74% | 85 | |
Uint8Array#copy(16) | 14,180,427 ops/sec | ±0.93% | 92 | ✓ |
NodeBuffer#copy(16) | 11,083,134 ops/sec | ±1.06% | 89 | |
BrowserBuffer#new(16000) | 141,678 ops/sec | ±3.30% | 67 | |
Uint8Array#new(16000) | 161,491 ops/sec | ±2.96% | 60 | |
NodeBuffer#new(16000) | 292,699 ops/sec | ±3.20% | 55 | ✓ |
BrowserBuffer#new(16) | 1,655,466 ops/sec | ±2.41% | 82 | |
Uint8Array#new(16) | 14,399,926 ops/sec | ±0.91% | 94 | ✓ |
NodeBuffer#new(16) | 3,894,696 ops/sec | ±0.88% | 92 | |
BrowserBuffer#readDoubleBE | 109,582 ops/sec | ±0.75% | 93 | ✓ |
DataView#getFloat64 | 91,235 ops/sec | ±0.81% | 90 | |
NodeBuffer#readDoubleBE | 88,593 ops/sec | ±0.96% | 81 | |
BrowserBuffer#readFloatBE | 139,854 ops/sec | ±1.03% | 85 | ✓ |
DataView#getFloat32 | 98,744 ops/sec | ±0.80% | 89 | |
NodeBuffer#readFloatBE | 92,769 ops/sec | ±0.94% | 93 | |
BrowserBuffer#readUInt32LE | 710,861 ops/sec | ±0.82% | 92 | |
DataView#getUint32 | 117,893 ops/sec | ±0.84% | 91 | |
NodeBuffer#readUInt32LE | 851,412 ops/sec | ±0.72% | 93 | ✓ |
BrowserBuffer#slice | 1,673,877 ops/sec | ±0.73% | 94 | |
Uint8Array#subarray | 6,919,243 ops/sec | ±0.67% | 90 | ✓ |
NodeBuffer#slice | 4,617,604 ops/sec | ±0.79% | 93 | |
BrowserBuffer#writeFloatBE | 66,011 ops/sec | ±0.75% | 93 | |
DataView#setFloat32 | 127,760 ops/sec | ±0.72% | 93 | ✓ |
NodeBuffer#writeFloatBE | 103,352 ops/sec | ±0.83% | 93 |
Method | Operations | Accuracy | Sampled | Fastest |
---|---|---|---|---|
BrowserBuffer#bracket-notation | 10,990,488 ops/sec | ±1.11% | 91 | |
Uint8Array#bracket-notation | 11,268,757 ops/sec | ±0.65% | 97 | |
NodeBuffer#bracket-notation | 11,353,260 ops/sec | ±0.83% | 94 | ✓ |
BrowserBuffer#concat | 378,954 ops/sec | ±0.74% | 94 | |
Uint8Array#concat | 1,358,288 ops/sec | ±0.97% | 87 | |
NodeBuffer#concat | 1,934,050 ops/sec | ±1.11% | 78 | ✓ |
BrowserBuffer#copy(16000) | 894,538 ops/sec | ±0.56% | 84 | |
Uint8Array#copy(16000) | 1,442,656 ops/sec | ±0.71% | 96 | |
NodeBuffer#copy(16000) | 1,457,898 ops/sec | ±0.53% | 92 | ✓ |
BrowserBuffer#copy(16) | 12,870,457 ops/sec | ±0.67% | 95 | |
Uint8Array#copy(16) | 16,643,989 ops/sec | ±0.61% | 93 | ✓ |
NodeBuffer#copy(16) | 14,885,848 ops/sec | ±0.74% | 94 | |
BrowserBuffer#new(16000) | 109,264 ops/sec | ±4.21% | 63 | |
Uint8Array#new(16000) | 138,916 ops/sec | ±1.87% | 61 | |
NodeBuffer#new(16000) | 281,449 ops/sec | ±3.58% | 51 | ✓ |
BrowserBuffer#new(16) | 1,362,935 ops/sec | ±0.56% | 99 | |
Uint8Array#new(16) | 6,193,090 ops/sec | ±0.64% | 95 | ✓ |
NodeBuffer#new(16) | 4,745,425 ops/sec | ±1.56% | 90 | |
BrowserBuffer#readDoubleBE | 118,127 ops/sec | ±0.59% | 93 | ✓ |
DataView#getFloat64 | 107,332 ops/sec | ±0.65% | 91 | |
NodeBuffer#readDoubleBE | 116,274 ops/sec | ±0.94% | 95 | |
BrowserBuffer#readFloatBE | 150,326 ops/sec | ±0.58% | 95 | ✓ |
DataView#getFloat32 | 110,541 ops/sec | ±0.57% | 98 | |
NodeBuffer#readFloatBE | 121,599 ops/sec | ±0.60% | 87 | |
BrowserBuffer#readUInt32LE | 814,147 ops/sec | ±0.62% | 93 | |
DataView#getUint32 | 137,592 ops/sec | ±0.64% | 90 | |
NodeBuffer#readUInt32LE | 931,650 ops/sec | ±0.71% | 96 | ✓ |
BrowserBuffer#slice | 878,590 ops/sec | ±0.68% | 93 | |
Uint8Array#subarray | 2,843,308 ops/sec | ±1.02% | 90 | |
NodeBuffer#slice | 4,998,316 ops/sec | ±0.68% | 90 | ✓ |
BrowserBuffer#writeFloatBE | 65,927 ops/sec | ±0.74% | 93 | |
DataView#setFloat32 | 139,823 ops/sec | ±0.97% | 89 | ✓ |
NodeBuffer#writeFloatBE | 135,763 ops/sec | ±0.65% | 96 | |
This module uses JavaScript Standard Style.
This was originally forked from buffer-browserify.
MIT. Copyright (C) Feross Aboukhadijeh, and other contributors. Originally forked from an MIT-licensed module by Romain Beauxis.
FAQs
Node.js Buffer API, for the browser
The npm package native-buffer-browserify receives a total of 270 weekly downloads. As such, native-buffer-browserify popularity was classified as not popular.
We found that native-buffer-browserify 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.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Product
Socket now supports four distinct alert actions instead of the previous two, and alert triaging allows users to override the actions taken for all individual alerts.
Security News
Polyfill.io has been serving malware for months via its CDN, after the project's open source maintainer sold the service to a company based in China.
Security News
OpenSSF is warning open source maintainers to stay vigilant against reputation farming on GitHub, where users artificially inflate their status by manipulating interactions on closed issues and PRs.