Problem with metamask when switching local node
A common problem I see is when users ask to switch their MetaMask instance from a remote network to a local Hardhat node using Wagmi.sh. The dialog box that appears after confirming the switch often does not display any error messages, which leads to frustration.
Problem:
When you use useSwitchNetwork with Wagmi.sh and Metamask on a remote network, a dialog prompts you to confirm switching from the remote network to the local Hardhat node. However, it does not display any error messages and does not indicate that the switch was successful. This can make users believe that the problem is solved without even knowing what went wrong.
Solution:
To solve this problem, it is necessary to add a check for the success of the switching operation and display an appropriate error message in case of failure. Here’s an example code snippet to get you started:
const useSwitchNetwork = async ({ type, network }) => {
ask {
await useSwitchNetwork({type, network});
} catch (error) {
console.error('Error switching to local hard:', error);
alert('Error switching to local protective helmet. Check the connection and try again.');
}
};
In this code snippet, we use a try-catch block to catch any errors that may occur during the switch operation. If an error occurs, we log it in the console and display a convenient error message with a warning window.
Alternative solution:
You can also use Wagmi.sh’s built-in support for network switching using the useSwitchNetwork function in the Hardhat configuration file (hardhat.config.js). Here is an example:
const {ethers} = require('wagmi');
module.export = {
// ...
async setup({ env }) {
constant network = env.network;
ask {
const MetamaskInstance = await ethers.getSigner();
if (network === 'metamask') {
await useSwitchNetwork({
type: 'switch',
network,
});
}
} catch (error) {
console.error('Error switching to local Hardhat:', error);
alert('Error switching to local protective helmet. Check the connection and try again.');
}
},
};
In this example, we use the ethers library to obtain an instance of a signer based on the current network. Then we use useSwitchNetwork to switch to the local Hardhat node.
Appendix:
By adding error checking and displaying user-friendly error messages, you can solve the problem of Metamask not switching to the local Hardhat node after using useSwitchNetwork. This should improve the overall user experience and help prevent frustration.