hexparse

A small library providing reasonably fast implementations of:

• Base64 Standard Encoding
• Base64 URL Encoding
• Base64 Standard Decoding
• Base64 URL Decoding
• Hex / Base16 Encoding
• Hex / Base16 Decoding

Where decoding functions take strings and output a Uint8Arrays, and encoding functions take any buffer type (ArrayBuffer, Uint8Array, other typed arrays, and DataViews) and output a string.

This library follows the byte order of the host, this means that typed arrays such as Uint32Array will be encoded in the byte order in its underlying memory buffer which is host specific. If platform compatibility is required for multi-byte buffers, see arrayToEndian and arrayFromEndian.

Example

import { decodeBase64, encodeHex } from "@chunklab/hexparse";

decodeBase64("SGVsbG8gd29ybGQ=");
// returns a Uint8Array with the bytes for "Hello world"

encodeHex(new Uint8Array([0xde, 0xad, 0xbe, 0xef]));
// returns "DEADBEEF"

Endianness

import { arrayToEndian, encodeHex } from "@chunklab/hexparse";

const words = new Uint32Array([0x11223344]);
const bigEndian = arrayToEndian(words, "big");
encodeHex(bigEndian);
// returns "11223344" regardless of host byte order

Install

npm install @chunklab/hexparse