Title: [Error] MetaMask: Detect Provider — Issue with Changed Accounts
Introduction
While using the MetaMask Detection Provider library with the MetaMask wallet, I recently encountered unexpected behavior where the second account in my wallet was not taken into account at runtime. This issue is causing issues in my application that relies heavily on the detected provider.
Issue
I have set the «Discovery Provider» to use MetaMask as the default service for account change events. However, when I perform operations that involve switching between different accounts in my wallet (e.g. transferring funds), the second account is not taken into account when performing these tasks.
Fix and Workaround
To resolve this issue, we need to update the Discovery Provider configuration to handle account changes correctly. Specifically, we need to ensure that both the first and second accounts are considered when triggering events.
Here is an updated example code snippet that shows how to fix the issue:
// Import the MetaMask detection provider
import { detectProvider } from '@metamask/detect-provider';
// Update the DetectProvider configuration
const detectProviderConfig = {
accountsChanged: true, // Add this line if you want to include both the first and second accounts in the execution
};
// Use the updated DetectProvider configuration
const detectProviderInstance = await detectProvider(detectProviderConfig);
Explanation
By setting «accountsChanged» to «true», we are telling MetaMask to fire events for all changes, including those that involve switching between different accounts. This ensures that both the first and second accounts are involved in executing these tasks.
Additionally, you can also manually specify the provider instance when you create it:
const detectProviderInstance = await detectProvider(' {
accountsChanged: true,
});
Conclusion
In summary, the issue of both the first and second accounts not being taken into account when switching between accounts can be resolved by updating the detection provider configuration. By including both account instances in the execution, we ensure that all required events are triggered. This updated configuration should resolve any issues related to the changed account behavior.
Example Use Case
This fix is particularly useful for applications that require seamless interaction with the blockchain network, such as: For example, decentralized finance (DeFi) platforms or marketplaces for non-fungible tokens (NFTs). By ensuring proper account management, developers can improve the performance and user experience of their applications.
If you have any additional questions or need further assistance, don’t hesitate to ask us!