Are you tired of dealing with non-obvious reverts and cryptic Move panic messages? 😩 Do you want to learn how to debug Move code and transaction behavior quickly? 🔍 Look no further! In this article, we'll provide step-by-step debug strategies and tools to diagnose Move code and runtime execution problems.

Reproduce Locally 📍

1. Start a local devnet and use deterministic test accounts.
2. Use sui move test with verbose flags to see failing test details.

Use Move Abort Codes and Custom Error Messages 📝

1. Add abort with meaningful error codes or use assert with message macros.
2. Map error codes to descriptions in docs for frontends to show user-friendly messages.

Instrumentation 🔍

1. Add event emissions in Move for critical state transitions.
2. Listen for events using provider.getEvents in TypeScript for easy tracing.

Transaction Inspection 🔎

1. Read transaction effects (gas used, mutated objects) after submission.
2. Compare expected mutated object versions with actual ones to find which operation failed.

Advanced Tracing 🔝

1. Use commit-level logs or a debugger that steps into Move execution (if supported).
2. Automate capture of full transaction payload + effects for failing CI tests.

Debug Like a Pro 💡

By following these step-by-step debug strategies and using the right tools, you'll be able to:

• Identify and fix issues quickly
• Improve your Move code and transaction behavior
• Provide better user experiences with user-friendly error messages

Happy debugging!