メニュー
Refactor safely in Codex by mapping dependents before edits, making structural changes in small increments, and validating imports, exports, and tests after each change.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Add new functionality by understanding existing patterns and dependencies before writing code. Locates where the feature belongs, studies conventions, implements following precedent, then verifies integration. Use when asked to add a feature, flag, endpoint, component, or module.
Thorough code review using token-efficient context gathering. Analyzes PRs, diffs, or staged changes by checking blast radius, complexity, and dependencies before reviewing the actual code. Use when asked to review a PR, review changes, or do a code review.
Systematically investigate and fix bugs using token-efficient context gathering. Reproduces the issue first, localizes with blame and history, traces the call path, then verifies the fix. Use when asked to fix a bug, investigate an error, or debug unexpected behavior.
Diagnose and fix performance issues by measuring before optimizing. Establishes baselines, identifies bottlenecks through call graphs and complexity analysis, then confirms improvements with numbers. Use when asked to optimize, speed up, reduce memory usage, or fix slowness.
Efficiently explore and understand an unfamiliar codebase using token-lean context gathering. Maps project structure, identifies key files, and builds understanding progressively without reading everything. Use when onboarding to a new project, asked to understand a codebase, or starting work in unfamiliar code.
Migrate frameworks, APIs, or language versions incrementally with verification at each step. Surveys the migration surface, batches work by dependency order, and commits after each verified batch. Use when asked to migrate between frameworks, upgrade major versions, or adapt to new API versions.
| name | safe-refactor |
| description | Refactor safely in Codex by mapping dependents before edits, making structural changes in small increments, and validating imports, exports, and tests after each change. |
| compatibility | Codex CLI with terminal access, git (tokenlean CLI optional) |
Change structure without changing behavior.
Analyze impact -> Plan -> Refactor -> Verify
rg -n "<target symbol|module>" src test bin
rg -n "export |import " <target-file>
Determine blast radius before touching code.
Choose smallest safe unit:
npm test
git diff --stat
git diff
Confirm no behavior regressions and no broken references.