🔏 Single Signature Approve + Execute

import { aave, createMeeClient, getMeeScanLink, toMultichainNexusAccount, type Trigger } from "@biconomy/abstractjs";
import { erc20Abi, http, parseAbi, parseUnits, type Hex } from "viem";
import { privateKeyToAccount } from "viem/accounts";
import { base, optimism } from "viem/chains";
 
const eoa = privateKeyToAccount(Bun.env.PRIVATE_KEY as Hex)
 
const orchestrator = await toMultichainNexusAccount({
  chains: [optimism, base],
  transports: [http(), http()],
  signer: eoa
})
 
const meeClient = await createMeeClient({
  account: orchestrator
})
 
const amount = parseUnits('10', 6)
const aaveV3 = '0xUniswap'
 
const usdc = '0xUSDC'
 
const approve = await orchestrator.buildComposable({
  type: 'default',
  data: {
    abi: erc20Abi,
    chainId: optimism.id,
    to: usdc,
    functionName: 'approve',
    args: [
      aaveV3,
      amount
    ]
  }
})
 
const aaveV3Abi = parseAbi([
  'function supply(address asset, uint256 amount, address onBehalfOf, uint16 referralCode) external'
]);
 
const supply = await orchestrator.buildComposable({
  type: 'default',
  data: {
    abi: aaveV3Abi,
    to: aaveV3,
    chainId: optimism.id,
    functionName: 'supply',
    args: [
      usdc,
      amount,
      eoa.address,
      0n
    ]
  }
})
 
const trigger: Trigger = {
  chainId: optimism.id,
  tokenAddress: usdc,
  amount: amount
}
 
const fusionQuote = await meeClient.getFusionQuote({
  instructions: [approve, supply],
  trigger: trigger,
  feeToken: {
    address: usdc,
    chainId: optimism.id
  }
})
 
const { hash } = await meeClient.executeFusionQuote({
  fusionQuote
})
 
console.log(`MEEScan Link: ${getMeeScanLink(hash)}`)
 
const receipt = await meeClient.waitForSupertransactionReceipt({ hash })