Question

A developer maintains a payment module where the same validation logic (checking currency codes, amount ranges, and account status) is copied across four different handler functions. They want to use GitHub Copilot to reduce this duplication and improve maintainability without changing external behavior. Which approach best leverages Copilot for this refactoring task?

Accepted Answer

Select the duplicated blocks, open Copilot Chat, and ask it to extract the shared validation into a single reusable function that each handler calls, then review and run the existing tests to confirm behavior is unchanged

Answer

Ask Copilot to rewrite the entire payment module from scratch using its own architecture so the duplication is eliminated automatically

Answer

Accept Copilot's first inline completion in each handler and assume the duplication is resolved because the code compiles

Answer

Delete three of the four handlers and rely on Copilot to regenerate them later when they are needed