bug-hunt

Reproducing bugs systematically means creating a minimal case that reliably triggers the issue, isolating it from surrounding code. This ensures you're fixing the root cause, not just hiding symptoms. Start by documenting exact steps, inputs, and environment conditions that trigger the failure.

Writing a failing test before the fix documents the exact bug behavior and serves as verification once you've corrected the root cause. It also prevents regressions—the same bug won't slip back in during future changes because the test will catch it.

Symptom-fixing masks the visible error without addressing what caused it, leaving the underlying issue to resurface elsewhere. Root-cause debugging traces the failure to its source, so one fix resolves the problem durably and prevents related regressions.

After fixing the root cause, add regression tests that verify the specific bug scenario stays fixed. These tests act as guards in your test suite, catching any future change that would reintroduce the same problem.

Use reproduction-first debugging for any bug report, error investigation, or regression. It's especially critical when fixing issues in production or in code with complex dependencies, where a wrong fix can create cascading problems.