@hdwallet/core/lib.esm/libs/base32.js

A complete Hierarchical Deterministic (HD) Wallet generator for 200+ cryptocurrencies, built with TypeScript.

// SPDX-License-Identifier: MIT
// @ts-ignore: no declaration file for 'base32.js'
import * as base32 from 'base32.js';
import { hexToBytes, bytesToHex } from '../utils';
const ALPHABET = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567';
const translate = (s, from, to) => s.split('')
    .map(c => {
    const i = from.indexOf(c);
    return i === -1 ? c : to[i];
})
    .join('');
const pad = (s) => (s.length % 8 ? s + '='.repeat(8 - (s.length % 8)) : s);
export function encode(hex, customAlphabet) {
    const bytes = hexToBytes(hex);
    const encoder = new base32.Encoder({ type: 'rfc4648', alphabet: ALPHABET });
    const b32 = encoder.write(bytes).finalize().toUpperCase(); // base32.js returns lower
    return customAlphabet ? translate(b32, ALPHABET, customAlphabet) : b32;
}
export const encodeNoPadding = (hex, alpha) => encode(hex, alpha).replace(/=+$/, '');
export function decode(data, customAlphabet) {
    try {
        let inp = pad(data);
        if (customAlphabet) {
            inp = translate(inp, customAlphabet, ALPHABET);
        }
        const dec = new base32.Decoder({ type: 'rfc4648', alphabet: ALPHABET });
        const bytes = dec.write(inp).finalize();
        return bytesToHex(bytes);
    }
    catch {
        throw new Error('Invalid Base32 string');
    }
}
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