Respan Dataset Explorer

yes

Okay, let's move forward with ethers.js version 6.4.1. To ensure compatibility with the alpha version, you can update your code as follows:

1. Import BigNumber using the appropriate syntax:
```javascript
const ethers = require('ethers');
const { BigNumber } = ethers;
```

2. Next, update the `estimateGas` function as the current method used to get the gas price may no longer be applicable. You can use a custom gas price instead:

```javascript
async function estimateGas(txObj) {
  const gasLimit = await provider.estimateGas({ ...txObj, from: wallet.address }); // Add from field
  const estimatedGasPrice = ethers.utils.parseUnits('50', 'gwei');
  const totalGas = gasLimit.mul(estimatedGasPrice);
  return ethers.utils.formatEther(totalGas);
}
```

I hope this updated code will be compatible with ethers.js 6.4.1. If you encounter any issues or need further assistance, please let me know.

TypeError: gasLimit.mul is not a function
    at estimateGas (C:\Users\lidor\Desktop\Trade Bot\index.js:32:29)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async executeTrade (C:\Users\lidor\Desktop\Trade Bot\index.js:67:29)
PS C:\Users\lidor\Desktop\Trade Bot> 

It seems the `.mul()` function is not supported in ethers.js 6.4.1 for BigNumber instances. Instead, you can use the `.multiply()` function, which should work correctly. Please update the `estimateGas` function as follows:

```javascript
async function estimateGas(txObj) {
  const gasLimit = await provider.estimateGas({ ...txObj, from: wallet.address }); // Add from field
  const estimatedGasPrice = ethers.utils.parseUnits('50', 'gwei');
  const totalGas = gasLimit.multiply(estimatedGasPrice); // Change .mul() to .multiply()
  return ethers.utils.formatEther(totalGas);
}
```

With this change, the code should work with ethers.js 6.4.1. If you encounter any other issues, please let me know.

TypeError: gasLimit.multiply is not a function
    at estimateGas (C:\Users\lidor\Desktop\Trade Bot\index.js:32:29)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async executeTrade (C:\Users\lidor\Desktop\Trade Bot\index.js:67:29)

Apologies for the confusion. It seems that gasLimit might not be a BigNumber instance in ethers.js 6.4.1. To fix the issue, let's convert gasLimit to a BigNumber instance using `.from()` method before using `.multiply()`:

```javascript
async function estimateGas(txObj) {
  const gasLimit = await provider.estimateGas({ ...txObj, from: wallet.address }); // Add the from field
  const estimatedGasPrice = ethers.utils.parseUnits('50', 'gwei');
  const totalGas = BigNumber.from(gasLimit).multiply(estimatedGasPrice); // Convert gasLimit to BigNumber and multiply
  return ethers.utils.formatEther(totalGas);
}
```

With this change, the code should work with ethers.js 6.4.1. If you encounter any other issues, please let me know.

it still doesn't work, let's just use big-number.js ?

Sure, we can use the `big-number.js` package for BigNumber operations. Here is how to update your code to use this library:

1. First, install the `big-number` package by running the following command:
```bash
npm install big-number
```

2. Import BigNumber from the `big-number` package in your code:
```javascript
const BigNumber = require('big-number');
```

3. Update the `estimateGas` function to use the `big-number` package:

```javascript
async function estimateGas(txObj) {
  const gasLimit = await provider.estimateGas({ ...txObj, from: wallet.address }); // Add the from field
  const estimatedGasPrice = ethers.utils.parseUnits('50', 'gwei');
  // Convert gasLimit and estimatedGasPrice to BigNumber and multiply
  const totalGas = BigNumber(gasLimit.toString()).multiply(estimatedGasPrice.toString());
  return ethers.utils.formatEther(totalGas.toString());
}
```

4. Make sure to remove the older import of BigNumber from ethers:
```javascript
// const { ethers, BigNumber } = require('ethers');
const ethers = require('ethers');
```

With these changes, your code should now use the `big-number` package for BigNumber operations. If you encounter any issues or need further assistance, please let me know.

    const tokenToSwapAmount = ethers.parseUnits('0.003', BigNumber(tokenToReceiveProperties.decimals.toString()));
PS C:\Users\lidor\Desktop\Trade Bot> node index.js
TypeError: invalid numeric value (argument="unit", value={ "number": [ 6 ], "rest": 0, "sign": 1 }, code=INVALID_ARGUMENT, version=6.4.1)    at makeError (C:\Users\lidor\Desktop\Trade Bot\node_modules\ethers\lib.commonjs\utils\errors.js:118:21)
    at assert (C:\Users\lidor\Desktop\Trade Bot\node_modules\ethers\lib.commonjs\utils\errors.js:142:15)
    at assertArgument (C:\Users\lidor\Desktop\Trade Bot\node_modules\ethers\lib.commonjs\utils\errors.js:154:5)
    at getNumber (C:\Users\lidor\Desktop\Trade Bot\node_modules\ethers\lib.commonjs\utils\maths.js:152:36)
    at Object.parseUnits (C:\Users\lidor\Desktop\Trade Bot\node_modules\ethers\lib.commonjs\utils\units.js:70:45)
    at executeTrade (C:\Users\lidor\Desktop\Trade Bot\index.js:43:38)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5) {
  code: 'INVALID_ARGUMENT',
  argument: 'unit',
  value: BigNumber { number: [ 6 ], sign: 1, rest: 0 }
}
PS C:\Users\lidor\Desktop\Trade Bot> 

There is an issue with the `ethers.parseUnits` function call. The function expects the second argument to be a numeric value representing the number of decimals. However, it seems like you're passing a BigNumber object instead of a number. To fix this issue, change this line:

```javascript
const tokenToSwapAmount = ethers.parseUnits('0.003', BigNumber(tokenToReceiveProperties.decimals.toString()));
```

to

```javascript
const tokenToSwapAmount = ethers.parseUnits('0.003', tokenToReceiveProperties.decimals);
```

With this change, the code should work as expected. Let me know if you encounter any other issues.

the .decimals value is 6n

It seems that the `.decimals` value is a BigInt, rather than a regular Number. In that case, you can convert it to a Number before passing it to the `ethers.parseUnits` function. Update the line as follows:

```javascript
const tokenToSwapAmount = ethers.parseUnits('0.003', Number(tokenToReceiveProperties.decimals));
```

By converting the BigInt to a Number, the code should work without issues. Let me know if you need any more assistance.

ok n ow this is the code const ethers = require('ethers');
const BigNumber = require('big-number');
const { computePoolAddress } = require('@uniswap/v3-sdk');
const { Token } = require('@uniswap/sdk-core');

// Ethereum network configuration
const provider = new ethers.JsonRpcProvider('http://127.0.0.1:8545/');

const privateKey = 'ac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80';

// Uniswap V3 contract configuration
const uniswapV3SwapRouterAddress = '0xE592427A0AEce92De3Edee1F18E0157C05861564';
const PoolFactoryContractAddress = '0x1F98431c8aD98523631AE4a59f267346ea31F984';
const quoterContractAddress = '0xb27308f9F90D607463bb33eA1BeBb41C27CE5AB6';
const uniswapV3SwapRouterABI = require('@uniswap/v3-periphery/artifacts/contracts/SwapRouter.sol/SwapRouter.json').abi;
const uniswapV3PoolABI = require('@uniswap/v3-core/artifacts/contracts/interfaces/IUniswapV3Pool.sol/IUniswapV3Pool.json').abi;
const uniswapV3QuoterAbi = require('@uniswap/v3-periphery/artifacts/contracts/lens/Quoter.sol/Quoter.json').abi;

// Token configuration
const tokenToSwapAddress = '0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2';
const tokenToReceiveAddress = '0xdAC17F958D2ee523a2206206994597C13D831ec7';

const wallet = new ethers.Wallet(privateKey, provider);

// Load the Uniswap V3 contract
const uniswapV3SwapRouterContract = new ethers.Contract(uniswapV3SwapRouterAddress, uniswapV3SwapRouterABI, wallet);
const customGasPrice = ethers.parseUnits('50', 'gwei');

async function estimateGas(txObj) {
  const gasLimit = await provider.estimateGas({ ...txObj, from: wallet.address }); // Add from field
  const estimatedGasPrice = ethers.parseUnits('50', 'gwei');
  // Convert gasLimit and estimatedGasPrice to BigNumber and multiply
  const totalGas = BigNumber(gasLimit.toString()).multiply(estimatedGasPrice.toString());
  return ethers.formatEther(totalGas.toString());
}

async function executeTrade() {
  try {
    const tokenToSwapProperties = await getTokenProperties(tokenToSwapAddress);
    const tokenToReceiveProperties = await getTokenProperties(tokenToReceiveAddress);
    const tokenToSwap = new Token(1, tokenToSwapAddress, Number(tokenToSwapProperties.decimals), tokenToSwapProperties.symbol, tokenToSwapProperties.name);
    const tokenToReceive = new Token(1, tokenToReceiveAddress, Number(tokenToReceiveProperties.decimals), tokenToReceiveProperties.symbol, tokenToReceiveProperties.name);
    const tokenToSwapAmount = ethers.parseUnits('1', Number(tokenToReceiveProperties.decimals));

    const currentPoolAddress = computePoolAddress({
      factoryAddress: PoolFactoryContractAddress,
      tokenA: tokenToSwap, // Use the Token instance
      tokenB: tokenToReceive, // Use the Token instance
      fee: 3000,
    });

    const poolContract = new ethers.Contract(currentPoolAddress, uniswapV3PoolABI, provider);

    const [token0, token1, fee] = await Promise.all([poolContract.token0(), poolContract.token1(), poolContract.fee()]);

    const quoterContract = new ethers.Contract(quoterContractAddress, uniswapV3QuoterAbi, provider);

    const data = quoterContract.interface.encodeFunctionData('quoteExactInputSingle', [token0, token1, fee, tokenToSwapAmount.toString(), 0]);
    const quotedAmountOut = await provider.call({ to: quoterContractAddress, data });
    const humanReadableAmountOut = ethers.formatUnits(quotedAmountOut, tokenToSwapProperties.decimals);
    console.log('Estimated amount out:', humanReadableAmountOut, tokenToReceiveProperties.name);

    const txObj = {
      to: quoterContractAddress,
      data: data,
    };
    const estimatedGasFee = await estimateGas(txObj);
    console.log('Estimated gas fee:', estimatedGasFee, 'ETH');

    // Approve Uniswap V3 SwapRouter to spend tokenToSwap
    console.log('Approving token spend by SwapRouter…');
    const tokenToSwapContract = new ethers.Contract(tokenToSwapAddress, ['function approve(address spender, uint256 amount) external returns (bool)'], wallet);
    const approvalTx = await tokenToSwapContract.approve(uniswapV3SwapRouterAddress, tokenToSwapAmount, { gasPrice: customGasPrice, gasLimit: 25000000 });

    await approvalTx.wait();
    console.log('Token spend approval transaction confirmed.');

    const swapParams = {
      tokenIn: tokenToSwapAddress,
      tokenOut: tokenToReceiveAddress,
      fee: 3000,
      recipient: wallet.address,
      deadline: Math.floor(Date.now() / 1000) + 60 * 20,
      amountIn: tokenToSwapAmount,
      amountOutMinimum: 0,
      sqrtPriceLimitX96: 0,
    };

    console.log('Sending swap transaction…');
    const swapTx = await uniswapV3SwapRouterContract.exactInputSingle(swapParams, { gasPrice: customGasPrice, gasLimit: 25000000 });

    console.log('Swap transaction hash:', swapTx.hash);

    // Wait for transaction confirmation
    console.log('Waiting for swap transaction confirmation…');
    await swapTx.wait();
    console.log('Swap transaction confirmed!');
  } catch (e) {
    console.log(e);
  }
}

executeTrade();

async function getTokenProperties(tokenAddress) {
  const erc20ABI = ['function name() view returns (string)', 'function symbol() view returns (string)', 'function decimals() view returns (uint8)'];
  const tokenContract = new ethers.Contract(tokenAddress, erc20ABI, provider);
  const [name, symbol, decimals] = await Promise.all([tokenContract.name(), tokenContract.symbol(), tokenContract.decimals()]);
  return {
    name,
    symbol,
    decimals,
  };
}
but the Estimated amount out is without decimals Estimated amount out: 0.0 Tether USD

The issue might be caused by using the wrong variable for formatting the output amount. You are using `tokenToSwapProperties.decimals` instead of `tokenToReceiveProperties.decimals`. Update the following line in your code:

```javascript
const humanReadableAmountOut = ethers.formatUnits(quotedAmountOut, tokenToSwapProperties.decimals);
```

to

```javascript
const humanReadableAmountOut = ethers.formatUnits(quotedAmountOut, tokenToReceiveProperties.decimals);
```

Now the code should display the estimated amount with decimals:

```javascript
console.log('Estimated amount out:', humanReadableAmountOut, tokenToReceiveProperties.name);
```

Let me know if the issue persists or if you need any more help.

why does this happend when i change the tokenToSwapAddress with tokenToReceiveAddress

The issue occurs because the `tokenToSwapAmount` is being calculated with the wrong decimals. When you swap `tokenToSwapAddress` and `tokenToReceiveAddress`, you should also use `tokenToSwapProperties.decimals` when parsing the amount instead of `tokenToReceiveProperties.decimals`.

Update the following line in your code:

```javascript
const tokenToSwapAmount = ethers.parseUnits('1', Number(tokenToReceiveProperties.decimals));
```

to:

```javascript
const tokenToSwapAmount = ethers.parseUnits('1', Number(tokenToSwapProperties.decimals));
```

Now the code should work correctly when swapping the address variables. If you encounter any other issues, please let me know.

same

I apologize for the confusion. In that case, let's print some debug information to understand the issue when you swap `tokenToSwapAddress` and `tokenToReceiveAddress`. Add console.log statements to print token properties and swap parameters within the `executeTrade` function:

```javascript
console.log("Token to Swap Properties:", tokenToSwapProperties);
console.log("Token to Receive Properties:", tokenToReceiveProperties);
console.log("Token to Swap Amount:", tokenToSwapAmount.toString());
```

Also, print the `data` variable in `executeTrade` right after its declaration:

```javascript
console.log("Data:", data);
```

Now, run the script with swapped `tokenToSwapAddress` and `tokenToReceiveAddress` and share the output of these additional lines. This information will help us understand better how the amount is being calculated when you change the addresses and we'll find the root cause of the issue.

PS C:\Users\lidor\Desktop\Trade Bot> node index.js
Token to Swap Properties: { name: 'Tether USD', symbol: 'USDT', decimals: 6n }
Token to Receive Properties: { name: 'Wrapped Ether', symbol: 'WETH', decimals: 18n }
Token to Swap Amount: 1000000
data: 0xf7729d43000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec70000000000000000000000000000000000000000000000000000000000000bb800000000000000000000000000000000000000000000000000000000000f42400000000000000000000000000000000000000000000000000000000000000000
Estimated amount out: 0.0 Wrapped Ether
Estimated gas fee: 0.00312885 ETH
Approving token spend by SwapRouter…
Error: could not coalesce error (error={ "code": -32603, "data": { "data": "0x", "message": "Error: Transaction reverted without a reason string", "txHash": "0xcca09d3cb0621ded12732e7b5ae67bbd181fb0a67c0c230f816646c2f33b25ec" }, "message": "Error: Transaction reverted without a reason string" }, code=UNKNOWN_ERROR, version=6.4.1)
    at makeError (C:\Users\lidor\Desktop\Trade Bot\node_modules\ethers\lib.commonjs\utils\errors.js:125:21)
    at JsonRpcProvider.getRpcError (C:\Users\lidor\Desktop\Trade Bot\node_modules\ethers\lib.commonjs\providers\provider-jsonrpc.js:638:41)
    at C:\Users\lidor\Desktop\Trade Bot\node_modules\ethers\lib.commonjs\providers\provider-jsonrpc.js:257:52
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5) {
  code: 'UNKNOWN_ERROR',
  error: {
    code: -32603,
    message: 'Error: Transaction reverted without a reason string',
    data: {
      message: 'Error: Transaction reverted without a reason string',
      txHash: '0xcca09d3cb0621ded12732e7b5ae67bbd181fb0a67c0c230f816646c2f33b25ec',
      data: '0x'
    }
  }
}
PS C:\Users\lidor\Desktop\Trade Bot> 

Thank you for providing the debug information. Based on the output, it seems the token approval transaction is failing. It might be due to the wrong token being approved for spending. Let's update the token approval process to use the correct token contract:

Change this line:
```javascript
const tokenToSwapContract = new ethers.Contract(tokenToSwapAddress, ['function approve(address spender, uint256 amount) external returns (bool)'], wallet);
```

to:
```javascript
const tokenToSwapContract = new ethers.Contract(tokenToReceiveAddress, ['function approve(address spender, uint256 amount) external returns (bool)'], wallet);
```

This change should make the `executeTrade()` function use the correct token contract for the approval process when swapping `tokenToSwapAddress` and `tokenToReceiveAddress`.

Please run the script again and let me know if you encounter any other issues.