wif/src/esm/index.js

Bitcoin Wallet Import Format (WIF) decoding/encoding module

import bs58Check from 'bs58check';
export function decodeRaw(buffer, version) {
    // check version only if defined
    if (version !== undefined && buffer[0] !== version)
        throw new Error('Invalid network version');
    // uncompressed
    if (buffer.length === 33) {
        return {
            version: buffer[0],
            privateKey: buffer.slice(1, 33),
            compressed: false
        };
    }
    // invalid length
    if (buffer.length !== 34)
        throw new Error('Invalid WIF length');
    // invalid compression flag
    if (buffer[33] !== 0x01)
        throw new Error('Invalid compression flag');
    return {
        version: buffer[0],
        privateKey: buffer.slice(1, 33),
        compressed: true
    };
}
export function encodeRaw(version, privateKey, compressed) {
    if (privateKey.length !== 32)
        throw new TypeError('Invalid privateKey length');
    var result = new Uint8Array(compressed ? 34 : 33);
    var view = new DataView(result.buffer);
    view.setUint8(0, version);
    result.set(privateKey, 1);
    if (compressed) {
        result[33] = 0x01;
    }
    return result;
}
export function decode(str, version) {
    return decodeRaw(bs58Check.decode(str), version);
}
export function encode(wif) {
    return bs58Check.encode(encodeRaw(wif.version, wif.privateKey, wif.compressed));
}