Metamask: Ethers npm – Mainnet vs Ropsten Difference
In the world of Ethereum, there are two main blockchains running on the Ethers.js library: Mainnet and Ropsten. Each has its own unique characteristics, and understanding how they differ is essential for building robust decentralized applications (dApps).
Mainnet vs Ropsten: Key Differences
- Block Time: The block time on Mainnet is 15 seconds, while on Ropsten it is 10 seconds.
- Transaction Fees: Transaction fees are lower on Ropsten due to the smaller block size and faster transaction processing time.
Ethers npm and Metamask: Allowing Payments
When developing dApps using Ethers.js, you need to differentiate between the two main chains. Here’s how you can achieve this using Metamask:
Step 1: Install MetaMask
First, install the Metamask wallet on the Ethereum network:
npm install metamask
Then import MetaMask into your Ethers.js code and initialize it:
const { Web3 } = require('@metamask/web3');
const web3 = new Web3(new Web3.providers.HttpProvider('
const metamask = new Web3.eth.Wallet("YOUR_METAMASK_PUBLIC_KEY");
Step 2: Check Network Connection
Before making any transactions, check your network connection:
if (!metamask.isConnected()) {
console.error('Metamask is not connected. Please connect first.');
}
Step 3: Enable Payment
To enable payments, you need to make sure that only users confirmed on Mainnet can pay using Metamask:
async function makePayment() {
try {
const user = await metamask.getBalance();
if (!user || !wait metamask.confirm()) {
console.error('User has not confirmed. Please confirm first.');
return;
}
// Create your payment logic here...
} catch (error) {
console.error(error);
}
}
Step 4: Save the payment to the database
To save the payment to the database, you can use a library such as Ethers.js itself or a custom solution:
async function makePayment() {
try {
const user = await metamask.getBalance();
if (!user || !wait metamask.confirm()) {
console.error('User has not confirmed. Please confirm first.');
return;
}
// Create the payment logic here...
// Save the payment to the database
await db.collection('payments').insertOne({
userId: user.address,
transactionHash: 'your_transaction_hash',
timestamp: new Date(),
});
} catch (error) {
console.error(error);
}
}
If you follow these steps, you can differentiate between Mainnet and Ropsten in Ethers.js, allowing users of the latter to make payments without connecting to Metamask.
