Metamask: How to get pending transaction counts using web3-react?

Here’s a step-by-step guide on how to get the pending transaction count in Metamask using Web3-React:

1. Set up your MetaMask wallet and Web3-React library

First, you need to set up your MetaMask wallet and install the web3-react library.

npx metamask installed

npm install web3-react

2. Import necessary libraries in your code

In your JavaScript file, import the necessary libraries.

import Web3 from 'web3-react';

import MetaMaskProvider from './metamask-provider.js';

3. Initialize MetaMask provider and get user’s address

Create a MetaMaskProvider instance and use it to get the user’s current address.

const provider = new MetaMaskProvider();

const userAddress = provider.getAddress();

4. Create a Web3 instance with MetaMask provider

Now, create a new Web3 instance using your provider.

const web3 = new Web3(provider);

5. Use the eth_getTransactionCount method to get pending transaction count

Use the eth_getTransactionCount method of the Web3 instance to get the number of pending transactions for a given address.

async function getPendingTransactions() {

    const txCounts = await web3.eth.getTransactionCount(userAddress);

    return txCounts;

}


// Call the function

getPendingTransactions().then((txCounts) => console.log(txCounts));

Sample use cases

Here’s how you can modify your code to handle errors and display pending transactions in a more user-friendly way.

import Web3 from 'web3-react';

import MetaMaskProvider from './metamask-provider.js';


const provider = new MetaMaskProvider();

const web3 = new Web3(provider);


async function getPendingTransactions() {

    try {

        const txCounts = await web3.eth.getTransactionCount(userAddress);

        return txCounts;

    } catch ( error ) {

        console.error(error);

        return 0; // Return 0 if there are no pending transactions

    }

}


// Call the function

getPendingTransactions().then((txCounts) => console.log(txCounts));

How to handle errors and edge cases

When using eth_getTransactionCount, you might encounter error or limit issues. Here’s how you can modify your code to handle these:

async function getPendingTransactions() {

    const txCounts = await web3.eth.getTransactionCount(userAddress);

    

    // Check for transaction count errors

    if (txCounts < 1) { // If there are no pending transactions, return 0

        console.error('No pending transactions found');

        return 0;

    }

    

    return txCounts;

}


// Call the function

getPendingTransactions().then((txCounts) => console.log(txCounts));

This code will log an error if there are no pending transactions and display a “0” instead.

Conclusion

To get the pending transaction count in Metamask using Web3-React, you can follow these steps:

• Initialize your MetaMask wallet and web3-react library.

• Get the user’s current address using a MetaMaskProvider.

• Create a new Web3 instance using your provider.

• Use the eth_getTransactionCount method to get pending transaction counts.

Remember to handle errors, edge cases, and potential limit issues when working with Web3-React in your applications.

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