bitcoinjs-lib/src/index.js

module.exports = {
  Address: require('./address'),
  Block: require('./block'),
  ECPair: require('./ecpair'),
  ECSignature: require('./ecsignature'),
  HDNode: require('./hdnode'),
  Transaction: require('./transaction'),
  TransactionBuilder: require('./transaction_builder'),

  bufferutils: require('./bufferutils'),
  crypto: require('./crypto'),
  message: require('./message'),
  networks: require('./networks'),
  opcodes: require('./opcodes'),
  scripts: require('./scripts')
}