This article is about fixing Failed to parse source map from ... Error ENOENT no such file or directory, open ... in TrueFiEng useDApp
  • 30-Jan-2023
Lightrun Team
Author Lightrun Team
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This article is about fixing Failed to parse source map from ... Error ENOENT no such file or directory, open ... in TrueFiEng useDApp

Failed to parse source map from … Error: ENOENT: no such file or directory, open … in TrueFiEng useDApp

Lightrun Team
Lightrun Team
30-Jan-2023

Explanation of the problem

During the compilation process, warnings were generated and failed to parse source maps from the file ‘node_modules/@metamask/detect-provider/src/index.ts’ resulting in an error with message “Error: ENOENT: no such file or directory, open ‘/Users/mac/Desktop/react-django-nft-marketplace/react_django_nft_marketplace/frontend/frontend/node_modules/@metamask/detect-provider/src/index.ts'”.

One warning was generated with the module in ‘./node_modules/@metamask/detect-provider/dist/index.js’ and detailed information about the warning is not shown. The webpack compilation was completed with 1 warning in 2753ms and typecheck results have not been received yet. However, no issues have been found in the code.

assets by path static/js/*.js 2.92 MiB
  asset static/js/bundle.js 2.92 MiB [emitted] (name: main) 1 related asset
  asset static/js/node_modules_web-vitals_dist_web-vitals_js.chunk.js 6.92 KiB [emitted] 1 related asset
asset index.html 1.67 KiB [emitted]
asset asset-manifest.json 458 bytes [emitted]
cached modules 4.26 MiB (javascript) 31.5 KiB (runtime) [cached] 1227 modules
WARNING in ./node_modules/@metamask/detect-provider/dist/index.js
Module Warning (from ./node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from '/Users/mac/Desktop/react-django-nft-marketplace/react_django_nft_marketplace/frontend/frontend/node_modules/@metamask/detect-provider/src/index.ts' file: Error: ENOENT: no such file or directory, open '/Users/mac/Desktop/react-django-nft-marketplace/react_django_nft_marketplace/frontend/frontend/node_modules/@metamask/detect-provider/src/index.ts'
 @ ./node_modules/@usedapp/core/dist/esm/src/helpers/injectedProvider.js 2:0-63 4:33-55
 @ ./node_modules/@usedapp/core/dist/esm/src/providers/injectedNetwork/provider.js 4:0-69 19:4-23
 @ ./node_modules/@usedapp/core/dist/esm/src/providers/injectedNetwork/index.js 2:0-27 2:0-27
 @ ./node_modules/@usedapp/core/dist/esm/src/providers/index.js 6:0-34 6:0-34
 @ ./node_modules/@usedapp/core/dist/esm/src/index.js 2:0-

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Problem solution for Failed to parse source map from … Error: ENOENT: no such file or directory, open … in TrueFiEng useDApp

The warning message in the code suggests that the problem lies with the file located at the specified path, which is the index.ts file of the “@metamask/detect-provider” package. The error message states that there is no such file or directory, which means that the file is missing from the specified location. This could be due to a variety of reasons such as file deletion, file corruption, or a mismatch between the file path in the code and its actual location on the system.

The proposed solution is to install an older version of the software, version 0.7.3, which has been reported to bypass the error. This is a common workaround in software development when faced with errors or bugs, as older versions of the software may have fewer or different issues compared to the latest version. However, it is important to keep in mind that this may not be a permanent solution, as the underlying problem may still persist in the older version. Additionally, it is always recommended to keep the software up to date, as this ensures that any security vulnerabilities or other issues are addressed in a timely manner.

Other popular problems with useDApp

Problem: Contract compatibility issue with Ethereum network

One of the common issues faced by users while using TrueFiEng is compatibility issues with Ethereum network. This occurs when the smart contract used by TrueFiEng is not compatible with the current version of Ethereum network.

The problem occurs when the smart contract used by TrueFiEng is outdated and not compatible with the current version of Ethereum network. This results in errors while executing the contract on the network and makes it difficult for the users to use the DApp.

Solution:

To resolve this issue, the users can upgrade their smart contract to the latest version that is compatible with the Ethereum network. This can be done by re-deploying the smart contract with the latest code to the Ethereum network. The following code block shows the process of upgrading the contract to the latest version:

pragma solidity ^0.7.3;

contract TrueFiEng {
  // Contract code
}

Problem: Gas fees issue while executing transactions

Another common issue faced by users while using TrueFiEng is high gas fees while executing transactions. This occurs due to the high demand for the Ethereum network, leading to an increase in gas fees.

High gas fees can make it difficult for the users to execute transactions on the Ethereum network as they need to pay a significant amount of fees for each transaction. This can be a major hindrance for users who want to use the DApp on a regular basis.

Solution:

To resolve this issue, the users can opt for alternate solutions such as using a different Ethereum client that has lower gas fees or wait for the demand on the Ethereum network to decrease. The following code block shows the process of executing a transaction on the Ethereum network using a different client that has lower gas fees:

const Web3 = require('web3');
const web3 = new Web3(new Web3.providers.HttpProvider('https://ropsten.infura.io/v3/YOUR-PROJECT-ID'));

web3.eth.sendTransaction({
  from: '0xFromAddress',
  to: '0xToAddress',
  value: '1000000000000000',
  gas: 21000,
  gasPrice: '20000000000'
}, (error, transactionHash) => {
  console.log(error, transactionHash);
});

Problem: Load time issue with the TrueFiEng useDApp

The TrueFiEng useDApp is a decentralized finance (DeFi) platform that operates on the Ethereum blockchain. One of the most common issues that users face is the slow load time when using the platform. This can be extremely frustrating, especially when executing critical transactions.

Solution:

To address the load time issue, several approaches can be taken. Firstly, it is recommended to ensure that the system requirements for the TrueFiEng useDApp are met. This includes a device with enough processing power and sufficient memory to run the platform smoothly. Secondly, checking the network conditions is also a key step, as slow network speed can be a major factor affecting load time.

if (networkSpeed < MIN_NETWORK_SPEED) {
  alert("Your network speed is too slow, please connect to a faster network");
}

Finally, optimizing the code and reducing the number of requests being made to the Ethereum network can also help to speed up the load time.

// Optimized code to reduce number of requests made to Ethereum network
async function getData() {
  // Retrieve data from Ethereum network
  const data = await contract.methods.getData().call();
  // Store data locally to reduce number of requests needed in future
  localStorage.setItem("data", JSON.stringify(data));
}

A brief introduction to useDApp

useDApp is an open source decentralized application development platform that allows developers to build and deploy blockchain-based applications. It is built on top of the Ethereum blockchain, which provides a secure and transparent infrastructure for developers to build and host their applications. The platform enables developers to interact with the blockchain using smart contracts, which are self-executing contracts that automate the execution of business logic on the blockchain.

useDApp provides developers with a suite of tools, libraries, and templates that help them build and deploy their applications quickly and efficiently. The platform provides a user-friendly interface for managing smart contracts, making it easier for developers to manage the underlying business logic of their applications. Additionally, useDApp provides a decentralized storage layer that allows developers to store and access data securely and transparently. With its powerful set of development tools and open source infrastructure, useDApp empowers developers to build and deploy applications that are secure, transparent, and accessible to all users.

Most popular use cases for useDApp

  1. Decentralized Finance (DeFi) Applications: useDApp can be utilized for a wide range of DeFi applications such as lending, borrowing, insurance, and investment. The decentralized nature of the platform ensures secure and transparent transactions, as well as reduces the need for intermediaries. With the help of smart contracts, useDApp can automatically execute financial transactions based on predefined rules, making it an efficient and cost-effective solution for DeFi applications.
  2. Supply Chain Management: useDApp can be used to streamline supply chain management by providing real-time visibility into supply chain operations, reducing the risk of fraud, and improving supply chain efficiency. The platform can be used to manage the tracking and delivery of goods, as well as to automate the payment process. With the help of smart contracts, useDApp can ensure that the payment is released only when the goods have been delivered and verified, making it a reliable solution for supply chain management.
  3. Decentralized Identity Management: useDApp can be used to manage decentralized identities by providing users with secure and self-sovereign control over their personal information. The platform can be used to store and manage identity information, as well as to provide access to this information only to authorized parties. This can be accomplished using smart contracts, which can enforce predefined access controls to ensure that only authorized parties can access the information.
contract IdentityManagement {
    mapping (address => uint) public identityInformation;

    function setIdentityInformation(uint _identityInformation) public {
        identityInformation[msg.sender] = _identityInformation;
    }

    function getIdentityInformation(address _address) public view returns (uint) {
        return identityInformation[_address];
    }

    function verifyAccess(address _address) public view returns (bool) {
        return msg.sender == _address;
    }
}
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