Problem with encoding tuple data with Web3 ABI

Question

I am trying to make a swap on Uniswap v3 through the SwapRouter contract via the ExactInputSingle function. The ABI states that this function gets tuple as the input parameter. How can I encode this data? When I try to encode input parameters in tuple I get an error:

Are there any other methods of creating swap transaction?

Answer 1

create the contract instance using ethers.js

 uniSwapRouterV3 = new ethers.Contract(uniSwapRouterAddress, RouterAbi.abi, ethersProvider.getSigner());

create the params object:

  const params = {
        tokenIn: address,
        tokenOut: address,
        fee: poolFee,
        recipient: userAddress,
        deadline: Math.floor(Date.now() / 1000) + 900,
        amountIn: amountInToWei,
        amountOutMinimum: amountOutMin,  (or just leave it 0)
        sqrtPriceLimitX96: 0
    }

and than the transaction:

const tx = await uniSwapRouterV3.exactInputSingle(params);

This is working and will return the sent transaction. If you want to get the receipt just wait for some confirmations.

  const receipt = await tx.wait([confirms = 1]);