Conversation with Merlin

Merlin Chat

· Mon Dec 04 2023

import React, { useState } from 'react'; import { ethers } from 'ethers';

const TstComp = () => { const [contractAddress, setContractAddress] = useState(''); const [transactionHash, setTransactionHash] = useState('');

const compileAndDeployContract = async () => {
    try {
        // Check if MetaMask is installed
        if (typeof window.ethereum === 'undefined') {
            throw new Error('MetaMask is not installed');
        }

        // Request access to the user's MetaMask account
        await window.ethereum.request({ method: 'eth_requestAccounts' });

        const name = 'hello';
        const symbol = 'hello';

        // Compile the smart contract
        const contractSourceCode = `// SPDX-License-Identifier: MIT
    pragma solidity ^0.8.9;

    import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
    import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
    import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";
    import "@openzeppelin/contracts/access/Ownable.sol";
    import "@openzeppelin/contracts/utils/Counters.sol";

    contract ${name} is ERC721, ERC721URIStorage, ERC721Burnable, Ownable {
      using Counters for Counters.Counter;

      Counters.Counter private _tokenIdCounter;

      constructor() ERC721("${name}", "${symbol}") {}

      function safeMint(address to, string memory uri) public onlyOwner {
        uint256 tokenId = _tokenIdCounter.current();
        _tokenIdCounter.increment();
        _safeMint(to, tokenId);
        _setTokenURI(tokenId, uri);
      }

      // The following functions are overrides required by Solidity.

      function _burn(uint256 tokenId)
        internal
        override(ERC721, ERC721URIStorage)
      {
        super._burn(tokenId);
      }

      function tokenURI(uint256 tokenId)
        public
        view
        override(ERC721, ERC721URIStorage)
        returns (string memory)
      {
        return super.tokenURI(tokenId);
      }
    }`;

        // Compile the contract source code to obtain ABI and bytecode
        const compiledContract = ethers.utils.parseContract(contractSourceCode);
        const contractABI = compiledContract.interface.fragments;
        const contractBytecode = compiledContract.bytecode;

        const contractFactory = new ethers.ContractFactory(contractABI, contractBytecode);
        const contract = await contractFactory.deploy();

        // Wait for the contract to be deployed and get the contract address
        const deploymentTransaction = contract.deployTransaction;
        setTransactionHash(deploymentTransaction.hash);

        await deploymentTransaction.wait();
        setContractAddress(contract.address);
    } catch (error) {
        console.error('Error deploying contract:', error);
    }
};

return (
    <div>
        <button onClick={compileAndDeployContract}>Deploy Contract</button>
        {transactionHash && <p>Transaction Hash: {transactionHash}</p>}
        {contractAddress && <p>Contract deployed at address: {contractAddress}</p>}
    </div>
);

};

export default TstComp;

export 'ethers'.'utils'.'parseContract' (imported as 'ethers') was not found in 'ethers' (possible exports: AbiCoder, ConstructorFragment, ErrorFragment, EventFragment, FormatTypes, Fragment, FunctionFragment, HDNode, Indexed, Interface, LogDescription, Logger, ParamType, RLP, SigningKey, SupportedAlgorithm, TransactionDescription, TransactionTypes, UnicodeNormalizationForm, Utf8ErrorFuncs, Utf8ErrorReason, _TypedDataEncoder, _fetchData, _toEscapedUtf8String, accessListify, arrayify, base58, base64, checkProperties, checkResultErrors, commify, computeAddress, computeHmac, computePublicKey, concat, deepCopy, defaultAbiCoder, defaultPath, defineReadOnly, entropyToMnemonic, fetchJson, formatBytes32String, formatEther, formatUnits, getAccountPath, getAddress, getContractAddress, getCreate2Address, getIcapAddress, getJsonWalletAddress, getStatic, hashMessage, hexConcat, hexDataLength, hexDataSlice, hexStripZeros, hexValue, hexZeroPad, hexlify, id, isAddress, isBytes, isBytesLike, isHexString, isValidMnemonic, isValidName, joinSignature, keccak256, mnemonicToEntropy, mnemonicToSeed, namehash, nameprep, parseBytes32String, parseEther, parseTransaction, parseUnits, poll, randomBytes, recoverAddress, recoverPublicKey, resolveProperties, ripemd160, serializeTransaction, sha256, sha512, shallowCopy, shuffled, solidityKeccak256, solidityPack, soliditySha256, splitSignature, stripZeros, toUtf8Bytes, toUtf8CodePoints, toUtf8String, verifyMessage, verifyTypedData, zeroPad)

i am using ethers 5.5.4

The error you're encountering indicates that the ethers.utils.parseContract function does not exist in the version of the ethers library you are using (5.5.4). The list of possible exports does not include this function as a part of the ethers library's utils.

Parsing and compiling Solidity code (like the smart contract code in your example) is not a feature provided by the ethers library. Compilation of Solidity code is typically done using the Solidity compiler (solc) or through development frameworks like Truffle or Hardhat which internally use solc to compile contractsTo compile a Solidity smart contract and obtain its ABI and bytecode, you would usually run solc directly, use a framework, which would handle the compilation process for you.

In a typical development environment, you'd have a separate step for compiling your Solidity code before deploying contracts with JavaScript or TypeScript. Here's how you might adjust your process:

Compile Contract Separately: Use solc or a framework to compile the smart contract ahead of time.
Obtain ABI and Bytecode: After compiling with `solc access the contract ABI and bytecode from the output artifacts, which are usually JSON files.
Use ABI and Bytecode with eth to Deploy: In your deployment script, import the ABI and bytecode from the generated JSON artifacts and use them to create a ContractFactory with ethers, as per existing code.

Example of how to modify your approach (considering you are not using a Solidity development environment like Truffle or Hardhat):

const contractArtifact = require('./path/to/compiledContract.json'); // getting compiled contract artifact

// ... rest of your code

// Use the ABI and bytecode from the compiled artifact
const contractFactory = new ethers.ContractFactory(
  contractArtifact.abi,
  contractArtifact.bytecode
);

const contract = await contractFactory.deploy();

// ... rest of your code

In this hypothetical code snippet, ./path/to/compiledContract.json is the relative path to the JSON artifact file that solc created when it compiled your Solidity code.

To fix the issue properly, remove the eth.utils.parseContract line from your code and make sure you have the compiled contract ABI and bytecode ready to be used in your deployment function as shown above.