BTCBOXのgetbalanceをR2へ組み込みたい

Question

**node.jsで起動するプログラム[r2]に、

npm run -s getBalance
```というコマンドがあり、
そこに、BTCboxの口座を付け加え、
CashとBTCの口座残高を表示したいです。

コードはtypescriptで書かれていて、
見本を真似て行ったがエラーがでてしまう。**

環境は MacOS node8.9.0 です。

使用しているプログラム[[r2](https://github.com/bitrinjani/r2)]

・考察

r2/node_modules/@bitr/btcbox
の中に必要なbtcboxのapiの設定は作られているので、そこへのパスを正確に繋げたい。

見本とさせていただいたのは、こちらの[プルリクエスト](https://github.com/bitrinjani/r2/pull/147/commits/ab60a6dbc6f4fe8bd3dfdfc45d16a21e15fc53c5)でして、同様にした所、bitbankの口座のgetbalanceを得ることができたので、

bitbankをbtcboxへパスを変更すればいいだけかと安易に思ったのですが、
試みたところ

```typescript
// Ad-hoc script to get balances from exchanges and output the result in CSV format.

import * as _ from 'lodash';
import { getConfigRoot, findBrokerConfig } from '../src/configUtil';
import BitflyerApi from '../src/Bitflyer/BrokerApi';
import CoincheckApi from '../src/Coincheck/BrokerApi';
import QuoineApi from '../src/Quoine/BrokerApi';
import BitbankccApi from '@bitr/bitbankcc-api';
import BtcboxApi from '@bitr/btcbox';
import { Balance } from '../src/Bitflyer/types';
import { TradingAccount, AccountBalance } from '../src/Quoine/types';
import { options } from '@bitr/logger';
import { Asset } from '@bitr/bitbankcc-api';
import { ??? } from '@bitr/btcbox';


options.enabled = false;

async function main() {
  const config = getConfigRoot();
  const bfConfig = findBrokerConfig(config, 'Bitflyer');
  const ccConfig = findBrokerConfig(config, 'Coincheck');
  const quConfig = findBrokerConfig(config, 'Quoine');
  const bbConfig = findBrokerConfig(config, 'Bitbankcc');
  const btConfig = findBrokerConfig(config, 'Btcbox');
  
  const bfApi = new BitflyerApi(bfConfig.key, bfConfig.secret);
  const ccApi = new CoincheckApi(ccConfig.key, ccConfig.secret);
  const quApi = new QuoineApi(quConfig.key, quConfig.secret);
  const bbApi = new BitbankccApi(bbConfig.key, bbConfig.secret);
  const btApi = new BtcboxApi(btConfig.key, btConfig.secret);
  
  // csv header
  process.stdout.write('Exchange, Currency, Type, Amount\n');

  // bitflyer cash balance
  if (bfConfig.enabled) {
    const bfBalance = await bfApi.getBalance();
    const bfJpy = (bfBalance.find(x => x.currency_code === 'JPY') as Balance).available;
    const bfBtc = (bfBalance.find(x => x.currency_code === 'BTC') as Balance).available;
    process.stdout.write(`bitFlyer, JPY, Cash, ${_.round(bfJpy)}\n`);
    process.stdout.write(`bitFlyer, BTC, Cash, ${bfBtc}\n`);
  }

  // coincheck cash balance
  if (ccConfig.enabled) {
    const ccBalance = await ccApi.getAccountsBalance();
    process.stdout.write(`Coincheck, JPY, Cash, ${_.round(ccBalance.jpy)}\n`);
    process.stdout.write(`Coincheck, BTC, Cash, ${ccBalance.btc}\n`);

    // coincheck margin balance
    const ccLeverageBalance = await ccApi.getLeverageBalance();
    process.stdout.write(`Coincheck, JPY, Margin, ${_.round(ccLeverageBalance.margin.jpy)}\n`);
    process.stdout.write(`Coincheck, JPY, Free Margin, ${_.round(ccLeverageBalance.margin_available.jpy)}\n`);
    const positions = await ccApi.getAllOpenLeveragePositions();
    const longPosition = _.sumBy(positions.filter(p => p.side === 'buy'), p => p.amount);
    const shortPosition = _.sumBy(positions.filter(p => p.side === 'sell'), p => p.amount);
    process.stdout.write(`Coincheck, BTC, Leverage Position, ${longPosition - shortPosition}\n`);
  }

  if (quConfig.enabled) {
    // quoine cash balance
    const quCashBalance = await quApi.getAccountBalance();
    const quJpyCash = quCashBalance.find(b => b.currency === 'JPY') as AccountBalance;
    const quBtcCash = quCashBalance.find(b => b.currency === 'BTC') as AccountBalance;
    process.stdout.write(`Quoine, JPY, Cash, ${_.round(quJpyCash.balance)}\n`);
    process.stdout.write(`Quoine, BTC, Cash, ${quBtcCash.balance}\n`);

    // quoine margin balance
    const quBalance = await quApi.getTradingAccounts();
    const quBtcJpyBalance = quBalance.find(x => x.currency_pair_code === 'BTCJPY') as TradingAccount;
    process.stdout.write(`Quoine, JPY, Margin, ${_.round(quBtcJpyBalance.balance)}\n`);
    process.stdout.write(`Quoine, JPY, Free Margin, ${_.round(quBtcJpyBalance.free_margin)}\n`);
    process.stdout.write(`Quoine, BTC, Leverage Position, ${quBtcJpyBalance.position}\n`);
  }

  if (bbConfig.enabled) {
    // bitbankcc cash balance
    const bbAssetsResponse = await bbApi.getAssets();
    const bbJpyCash = bbAssetsResponse.assets.find(b => b.asset === 'jpy') as Asset;
    const bbBtcCash = bbAssetsResponse.assets.find(b => b.asset === 'btc') as Asset;
    process.stdout.write(`Bitbankcc, JPY, Cash, ${_.round(bbJpyCash.free_amount)}\n`);
    process.stdout.write(`Bitbankcc, BTC, Cash, ${bbBtcCash.free_amount}\n`);
  }

  if (btConfig.enabled) {
    // btcbox cash balance
    const btAssetsResponse = await btApi.???();
    const btJpyCash = btAssetsResponse.assets.find(b => b.asset === 'jpy') as ???;
    const btBtcCash = btAssetsResponse.assets.find(b => b.asset === 'btc') as ???;
    process.stdout.write(`Btcbox, JPY, Cash, ${_.round(btJpyCash.free_amount)}\n`);
    process.stdout.write(`Btcbox, BTC, Cash, ${btBtcCash.free_amount}\n`);
  }
}

main();

以下のようなエラーがでてきました。

r2 xxx$ npm run -s getBalance

/Users/xxx/r2/node_modules/ts-node/src/index.ts:307
        throw new TSError(formatDiagnostics(diagnosticList, cwd, ts, lineOffset))
              ^
TSError: ⨯ Unable to compile TypeScript
tools/getBalance.ts (14,10): Identifier expected. (1003)
tools/getBalance.ts (14,11): Identifier expected. (1003)
tools/getBalance.ts (14,12): Identifier expected. (1003)
tools/getBalance.ts (9,8): Module '"/Users/xxx/r2/node_modules/@bitr/btcbox/dist/index"' has no default export. (1192)
    at getOutput (/Users/xxx/r2/node_modules/ts-node/src/index.ts:307:15)
    at /Users/xxx/r2/node_modules/ts-node/src/index.ts:336:16
    at Object.compile (/Users/xxx/r2/node_modules/ts-node/src/index.ts:498:11)
    at Module.m._compile (/Users/xxx/r2/node_modules/ts-node/src/index.ts:392:43)
    at Module._extensions..js (module.js:646:10)
    at Object.require.extensions.(anonymous function) [as .ts] (/Users/xxx/r2/node_modules/ts-node/src/index.ts:395:12)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
    at Function.Module.runMain (module.js:676:10)

お力添え何卒よろしくお願いいたします。