Convert address from EIP-55 to Bech32

eip55tobech32.js

// CommonJS CLI version

const { bech32 } = require('bech32');
const { toChecksumAddress } = require('web3-utils');

const {
  decode: bech32Decode,
  encode:  bech32Encode,
  fromWords: bech32FromWords,
  toWords: bech32ToWords
} = bech32

function makeBech32Encoder(prefix, limit) {
  return (data) => {
    if (data.substring(0, 2) !== '0x') {
      throw Error('Unrecognised address format');
    }
    return bech32Encode(prefix, bech32ToWords(data), limit)
  }
}

function makeBech32Decoder(currentPrefix, limit) {
  return (data) => {
    const { prefix, words } = bech32Decode(data, limit);
    if (prefix !== currentPrefix) {
      throw Error('Unrecognised address format');
    }
    return toChecksumAddress(Buffer.from(bech32FromWords(words)).toString('hex'));
  };
}

const bech32Chain = (name, coinType, prefix, limit) => ({
  coinType,
  decoder: makeBech32Decoder(prefix, limit),
  encoder: makeBech32Encoder(prefix, limit),
  name,
});

const address = process.env.ADDRESS || '';

const { encoder, decoder } = bech32Chain('L1', 29, 'genesis')

console.log(encoder(Buffer.from(address.substring(2), "hex")));