Simply require('@craftzdog/react-native-buffer') or use the Buffer global and you will get this module. It internally uses react-native-quick-base64, which is a performant native implementation of base64.

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.

npm install @craftzdog/react-native-buffer react-native-quick-base64
cd ios && pod install

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.

To depend on this module explicitly, require it like this:

import { Buffer } from "@craftzdog/react-native-buffer";

The Buffer constructor returns instances of Uint8Array that have their prototype changed to Buffer.prototype. Furthermore, Buffer is a subclass of Uint8Array, so the returned instances will have all the node Buffer methods and the Uint8Array methods. Square bracket notation works as expected -- it returns a single octet.

The Uint8Array prototype remains unmodified.

Use typedarray-to-buffer to convert any kind of typed array to a Buffer. Does not perform a copy, so it's super fast.

Buffer is a subclass of Uint8Array (which is a typed array). So there is no need to explicitly convert to typed array. Just use the buffer as a Uint8Array.

Use blob-to-buffer to convert a Blob to a Buffer.

To convert a Buffer to a Blob, use the Blob constructor:

var blob = new Blob([buffer]);

Optionally, specify a mimetype:

var blob = new Blob([buffer], { type: "text/html" });

To convert an ArrayBuffer to a Buffer, use the Buffer.from function. Does not perform a copy, so it's super fast.

var buffer = Buffer.from(arrayBuffer);

To convert a Buffer to an ArrayBuffer, use the .buffer property (which is present on all Uint8Array objects):

var arrayBuffer = buffer.buffer.slice(
  buffer.byteOffset,
  buffer.byteOffset + buffer.byteLength
);

Alternatively, use the to-arraybuffer module.

4x faster than base64-js on an iPhone 11 Pro when dealing with base64, thanks to react-native-quick-base64.

This was originally forked from feross/buffer.

The buffer team and community take all security bugs in buffer seriously. Please see our security policies and procedures document to learn how to report issues.

MIT. Copyright (C) Takuya Matsuyama, and other contributors. Originally forked from an MIT-licensed module by Feross Aboukhadijeh and Romain Beauxis.