Swap and Deposit

import {
  createComposeSdk,
  guards,
  materialisers,
  resources,
} from '@lifi/composer-sdk';

const WETH = '0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2';
const USDC = '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48';
// Aave aEthUSDC receipt token on Ethereum mainnet
const A_ETH_USDC = '0x98C23E9d8f34FEFb1B7BD6a91B7FF122F4e16F5c';

const sdk = createComposeSdk({
  baseUrl: 'https://composer.li.quest',
  apiKey: process.env.LIFI_API_KEY,
});

// Declare the flow with a single WETH input on Ethereum mainnet.
const builder = sdk.flow(1, {
  name: 'swap-and-zap-weth-to-aave',
  inputs: {
    amountIn: resources.erc20(WETH, 1),
  },
});

// Swap WETH → USDC via LI.FI.
const swapOutputs = builder.lifi.swap('swap', {
  bind: { amountIn: builder.inputs.amountIn },
  config: {
    resourceOut: resources.erc20(USDC, 1),
    slippage: 0.03,
  },
});

// Zap the swapped USDC into Aave's aEthUSDC position via LI.FI.
// The swap's amountOut handle is threaded directly into the zap's amountIn.
// See /composer/composer-api/concepts/ref-grammar for how handles translate to refs.
builder.lifi.zap('zap', {
  bind: { amountIn: swapOutputs.amountOut },
  config: {
    resourceOut: resources.erc20(A_ETH_USDC, 1),
  },
  guards: [guards.slippage({ port: 'amountOut', bps: 100 })],
});

const result = await builder.compile({
  signer: '0xYourSignerAddress',
  inputs: {
    amountIn: materialisers.directDeposit({
      amount: '1000000000000000000', // 1 WETH (18 decimals)
    }),
  },
  sweepTo: builder.context.sender,
});