Money Market on Robinhood Chain

import { Sodax, ChainKeys } from '@sodax/sdk';

const sodax = new Sodax();

// find() returns XToken | undefined, so narrow before using the address
const robinhoodTokens = sodax.moneyMarket.getSupportedTokensByChainId(ChainKeys.ROBINHOOD_MAINNET);
const usdg = robinhoodTokens.find(t => t.symbol === 'USDG');
if (!usdg) throw new Error('USDG is not a supported money-market token on Robinhood Chain');

const params = {
  srcChainKey: ChainKeys.ROBINHOOD_MAINNET,
  srcAddress: await walletProvider.getWalletAddress(),
  token: usdg.address,
  amount: 100n * 10n ** BigInt(usdg.decimals), // 100 USDG
  action: 'supply',
} as const;

const allowance = await sodax.moneyMarket.isAllowanceValid({ params });
if (!allowance.ok) throw allowance.error;
if (!allowance.value) {
  const approval = await sodax.moneyMarket.approve({ params, walletProvider });
  if (!approval.ok) throw approval.error;
  // wait for the approval to be mined before supplying
}

const result = await sodax.moneyMarket.supply({
  params,
  walletProvider, // IEvmWalletProvider, narrowed by srcChainKey
  timeout: 120_000, // optional relay timeout (default 120 s)
});

const bnUSD = robinhoodTokens.find(t => t.symbol === 'bnUSD');
if (!bnUSD) throw new Error('bnUSD is not a supported money-market token on Robinhood Chain');

const result = await sodax.moneyMarket.borrow({
  params: {
    srcChainKey: ChainKeys.ROBINHOOD_MAINNET, // where the caller acts from
    srcAddress: userRobinhoodAddress,
    token: bnUSD.address,                     // token on the destination network
    amount: 50n * 10n ** BigInt(bnUSD.decimals), // 50 bnUSD
    action: 'borrow',
    dstChainKey: ChainKeys.ROBINHOOD_MAINNET, // deliver on Robinhood Chain
    dstAddress: userRobinhoodAddress,
  },
  walletProvider,
});