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import type { Keypair } from '../../types.ts';
import { ed25519PairFromSeed } from '../../ed25519/index.ts';import { mnemonicValidate } from '../../mnemonic/index.ts';import { HARDENED, hdValidatePath } from '../validatePath.ts';import { ledgerDerivePrivate } from './derivePrivate.ts';import { ledgerMaster } from './master.ts';
export function hdLedger (_mnemonic: string, path: string): Keypair {  const words = _mnemonic    .split(' ')    .map((s) => s.trim())    .filter((s) => s);
  if (![12, 24, 25].includes(words.length)) {    throw new Error('Expected a mnemonic with 24 words (or 25 including a password)');  }
  const [mnemonic, password] = words.length === 25    ? [words.slice(0, 24).join(' '), words[24]]    : [words.join(' '), ''];
  if (!mnemonicValidate(mnemonic)) {    throw new Error('Invalid mnemonic passed to ledger derivation');  } else if (!hdValidatePath(path)) {    throw new Error('Invalid derivation path');  }
  const parts = path.split('/').slice(1);  let seed = ledgerMaster(mnemonic, password);
  for (const p of parts) {    const n = parseInt(p.replace(/'$/, ''), 10);
    seed = ledgerDerivePrivate(seed, (n < HARDENED) ? (n + HARDENED) : n);  }
  return ed25519PairFromSeed(seed.slice(0, 32));}