n0cte / basex2bigint

Base encoding / decoding of any given alphabet

basex2bigint

Alphabets

See below for a list of commonly recognized alphabets, and their respective base.

Base	Alphabet
2	01
8	01234567
11	0123456789a
16	0123456789abcdef
32	0123456789ABCDEFGHJKMNPQRSTVWXYZ
32	ybndrfg8ejkmcpqxot1uwisza345h769 (z-base-32)
36	0123456789abcdefghijklmnopqrstuvwxyz
58	123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz
62	0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
64	ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/
66	ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.!~

Example

Base58

const base58 = `123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz`;
const bs58 = require('basex2bigint')(base58);

const decoded = bs58.decode('5Kd3NBUAdUn')

console.log(decoded)
// => 1861530178134950899n

console.log(bs58.encode(decoded))
// => 5Kd3NBUAdUn