Copilot-Generated Code Has Bugs I Can't Figure Out

Does the 500 error log not show specific messages in the deployment environment? In such cases, I suspected parts of the code generated by Copilot related to await or async, as exceptions can sometimes be swallowed in asynchronous processing. Also, besides unit tests, simulating the deployment environment with simple stress tests or mocking tools was helpful.

When I verify code written by Copilot, I recommend breaking it down into smaller units and running them directly. For example, instead of trusting the entire endpoint, test just the DB query or external API call separately. Also, make sure to check the differences between the deployment environment and your local setup (e.g., timezone, encoding). I've been through similar struggles, so I totally get it.

I can relate to your struggles with Copilot. A practical tip is to review Copilot's code with a critical mindset, always asking 'Why was this written this way?' It's also helpful to set up real-time error logging for your deployment environment and test specific endpoints individually using curl. Even if it takes time, verifying each step one by one will eventually lead to a solution.

I've had a similar experience. When code written by Copilot works fine locally but breaks only in the deployment environment, it's usually due to differences in environment variables or dependencies. My tip is to carefully check the deployment environment logs and focus on reviewing the exception handling and null check parts of the code generated by Copilot. These are areas that AI tends to overlook.

Here's a debugging tip to save you time. Instead of using Copilot code as-is, first log key variables and API responses with console.log or try-catch. Bugs that only appear in production are often due to specific inputs or network conditions, so narrowing down the cause with logs helps you resolve it faster than you'd think.