bug-triage（错误分类）

Bug triage

Goal

Turn an ambiguous bug report into:

• a reliable repro (or a clear “cannot reproduce yet” with next info to collect)
• a root-cause explanation
• a minimal, reviewed fix
• verification steps (commands + manual checks)

First checks

1. Read any repo-specific guidance (AGENTS.md, CONTRIBUTING.md, README).
2. Clarify impact: severity, who is affected, and whether it’s a regression.

If info is missing, ask for it

• Exact steps to reproduce (starting state + inputs).
• Expected vs actual behavior.
• Error text / stack trace / logs (full, unedited if possible).
• Environment: OS, runtime versions (Node/Bun), browser, commit hash/tag.
• Frequency: always / sometimes / only certain data.
• “Last known good” version or approximate date when it started.

Workflow (checklist)

1. Reproduce locally

- Prefer the simplest, fastest repro. - If it’s flaky, try to reduce nondeterminism (seed, fixed time, retries).

1. Localize the failure

- Narrow to a file/function/component/config. - Use rg to find relevant code paths and error strings.

1. Identify root cause

- Form a hypothesis, confirm with logs/breakpoints, then refine. - If it’s a regression and git history exists, consider git bisect.

1. Implement the minimal fix

- Fix the cause, not the symptom. - Avoid drive-by refactors and formatting churn.

1. Verify

- Run the project’s standard checks (lint/tests/build). - Re-run the repro steps and confirm the fix.

Repo-aware command hints

Use what the repo actually uses:

• If bun.lock exists: prefer bun... (e.g. bun lint, bun build, bun dev).
• Otherwise: use the project’s documented commands (npm, pnpm, yarn, etc.).

Deliverable (paste this in the chat / PR / issue)

Use this format:

• Summary:...
• Repro:...
• Root cause:...
• Fix:...
• Verification:...
• Risk/notes:...

If you need a bug-report structure to ask the user for, use references/bug-report-template.md.