src/lib/wallet.ts · bridge

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bridge/src/lib/wallet.ts

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1// import * as bip32 from 'bip32';

2import * as bip39 from 'bip39';

3import { bip32 } from 'bitcoinjs-lib';

4import { Just, Nothing } from 'folktale/maybe';

5import * as kg from 'urbit-key-generation';

6import BridgeWallet from './types/BridgeWallet';

7import { publicToAddress } from './utils/address';

9export const urbitWalletFromTicket = async (

10 ticket: string,

11 point: number,

12 passphrase?: string

13) => {

14 return await kg.generateWallet({

15 ticket: ticket,

16 ship: point,

17 passphrase: passphrase,

18 });

21export const walletFromMnemonic = (

22 mnemonic: string,

23 hdpath: string,

24 passphrase?: string,

25 skipMnemonicCheck?: boolean

26) => {

27 const seed =

28 skipMnemonicCheck || bip39.validateMnemonic(mnemonic)

29 ? Just(bip39.mnemonicToSeedSync(mnemonic, passphrase))

30 : Nothing();

32 const toWallet = (sd: Buffer, path: string) => {

33 let wal: BridgeWallet;

34 const hd = bip32.fromSeed(sd);

35 // tsc complains because address is not available; it is set on the next line

36 //@ts-ignore

37 wal = hd.derivePath(path);

38 wal.address = publicToAddress(wal.publicKey);

39 wal.passphrase = passphrase || '';

40 wal = Just(wal);

41 return wal;

42 };

44 const wallet = seed.chain((sd: Buffer) => toWallet(sd, hdpath));

46 return wallet;