Using Uniswap SDK gives me this error: resolver or addr is not configured for ENS name

Question

I am trying to swap ETH for DAI tokens using the UniSwap SDK and javascript, but am getting the following error on running the script.

(node:10096) UnhandledPromiseRejectionWarning: Error: resolver or addr is not configured for ENS name (argument="name", value="", code=INVALID_ARGUMENT, version=contracts/5.0.5)

I have narrowed the error down to the uniswap.swapExactETHForTokens function but I still don't know how to fix it.

Full code: (Private keys are hidden from the code for obvious reasons)

const { ChainId, Fetcher, WETH, Route, Trade, TokenAmount, TradeType, Percent } = require('@uniswap/sdk');
const ethers = require('ethers');

const chainId = ChainId.MAINNET;
const tokenAddress = '0x6B175474E89094C44Da98b954EedeAC495271d0F';

const init = async () => {
  const dai = await Fetcher.fetchTokenData(chainId, tokenAddress);
  const weth = WETH[chainId];
  const pair = await Fetcher.fetchPairData(dai, weth);
  const route = new Route([pair], weth);
  const trade = new Trade(route, new TokenAmount(weth, '1000000000000'), TradeType.EXACT_INPUT);
  
  const slippageTolerance = new Percent('50', '10000');
  const amountOutMin = trade.minimumAmountOut(slippageTolerance).raw;

  const path = [weth.address, dai.address];
  const to = '';
  const deadline = Math.floor(Date.now() / 1000) + 60 * 20;
  const value = trade.inputAmount.raw;

  const provider = ethers.getDefaultProvider('mainnet', {
    infura: 'https://mainnet.infura.io/v3/ba14d1b3cfe5405088ee3c65ebd1d4' 
  });

  const signer = new ethers.Wallet(PRIVATE_KEY);
  const account = signer.connect(provider);

  const uniswap = new ethers.Contract(
    '0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D',
    ['function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts)'],
    account
  );
 
  const tx = await uniswap.swapExactETHForTokens(
    amountOutMin,
    path,
    to,
    deadline,
    { value, gasPrice: 20e9 }
  );
  console.log(`Transaction hash: ${tx.hash}`);

  const receipt = await tx.wait();
  console.log(`Transaction was mined in block ${receipt.blockNumber}`);
}

init();

Answer 1

I guess you can replace

const to = ''

by:

const to = process.env.ACCOUNT 

providing your account / wallet address to which the targetTokens shall be sent.