react-native-quick-base64

A native implementation of Base64 in C++ for React Native.

~16x faster than base64-js on an iPhone 15 Pro Max simulator. Try the benchmarks under example.

iPhone	Android

Installation

npm install react-native-quick-base64

Usage

import { btoa, atob } from 'react-native-quick-base64'

const base64 = btoa('foo')
const decoded = atob(base64)

Methods

Compatible with base64-js.

byteLength(b64: string): number

Takes a base64 string and returns length of byte array.

toByteArray(b64: string, removeLinebreaks: boolean = false): Uint8Array

Takes a base64 string and returns a byte array. Optional removeLinebreaks removes all \n characters.

fromByteArray(uint8: Uint8Array, urlSafe: boolean = false): string

Takes a byte array and returns a base64 string. Optional urlSafe flag true will use the URL-safe dictionary.

btoa(data: string): string

Encodes a string in base64.

atob(b64: string): string

Decodes a base64 encoded string.

shim()

Adds btoa and atob functions to global.

trimBase64Padding = (str: string): string

Trims the = padding character(s) off of the end of a base64 encoded string. Also, for base64url encoded strings, it will trim off the trailing . character(s).

Contributing

See the contributing guide to learn how to contribute to the repository and the development workflow.

License

MIT by Takuya Matsuyama