Interacting with TestAddLiquidity S.C

const signer = Wallet.createRandom(); // Create your signer instance here

const testAddLiquidityContract = new Contract(
    config.TEST_ADD_LIQUIDITY_CONTRACT_ADDRESS,
    [
     `function addLiqETH(address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline) external payable`,
    ],
    signer
)

const addLiquidityETH = async () => {
  const amountTokenDesired = 1000000000000000000;
  const amountTokenMin = 1000000000000000000;
  const amountETHMin = 1000000000000000000;
  const to = '0x0000000000000000000000000000000000000000';
  const deadline = Math.floor(Date.now() / 1000) + 60;

  const tx = await testAddLiquidityContract.addLiqETH(
    config.TOKEN_ADDRESS,
    amountTokenDesired,
    amountTokenMin,
    amountETHMin,
    to,
    deadline
  );

  console.log({ tx });
};