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Code refactoring with AI assistance. Use for modernizing code, converting JavaScript to TypeScript, class to hooks conversions, and systematic renaming.
デフォルトでは、最初にソースを確認する Prompt が選択されています。直接コマンドに切り替えるか、ローカルコピーをダウンロードすることもできます。
インストールを決める前に、SKILL.md と SkillsMP に表示されている付属ファイルをお読みください。
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。
直接コマンドでは確認用 Prompt が省略されます。実行前にソースを確認してください。
npx skills add https://github.com/johnlindquist/claude --skill refactorコマンドは1行のまま表示されます。コピー前に横へスクロールして全体を確認してください。
ローカルで確認しますか？SkillsMP が現在取得できるファイルをダウンロードできます。
SOC 職業分類に基づく
SKILL.md を表示中
| name | refactor |
| description | Code refactoring with AI assistance. Use for modernizing code, converting JavaScript to TypeScript, class to hooks conversions, and systematic renaming. |
Systematic code refactoring with AI guidance.
# Gemini for analysis and suggestions
pip install google-generativeai
export GEMINI_API_KEY=your_api_key
# AST-based tools
npm install -g jscodeshift
npm install -g typescript
# Step 1: Rename file
mv file.js file.ts
# Step 2: AI assistance for types
CODE=$(cat file.ts)
gemini -m pro -o text -e "" "Convert this JavaScript to TypeScript with proper types:
$CODE
Requirements:
- Add explicit types for function parameters and returns
- Create interfaces for object shapes
- Use strict TypeScript (no any unless necessary)
- Preserve functionality exactly"
CODE=$(cat ClassComponent.tsx)
gemini -m pro -o text -e "" "Convert this React class component to functional component with hooks:
$CODE
Requirements:
- Convert state to useState
- Convert lifecycle methods to useEffect
- Convert class methods to functions
- Preserve all functionality
- Use proper TypeScript types"
CODE=$(cat legacy.ts)
gemini -m pro -o text -e
# Using sed for simple renames
find src -name "*.ts" -exec sed -i '' 's/oldName/newName/g' {} +
# Using ripgrep to preview
rg "oldName" src/
# With jscodeshift for AST-safe rename
npx jscodeshift -t rename-transform.ts src/
# AI-assisted rename planning
gemini -m pro -o text -e "" "I want to rename 'oldName' to 'newName' across the codebase.
Files that use it:
$(rg -l "oldName" src/)
Suggest:
1. Order of changes to avoid breaks
2. Any tricky cases to watch for
3. Tests to run after"
gemini -m pro -o text -e "" "Analyze this code for refactoring opportunities:
$(cat src/module.ts)
Look for:
- Code duplication
- Long functions
- Deep nesting
- Magic numbers/strings
- Poor naming
- Missing abstractions
- Tight coupling"
# Find complex functions
rg "function|=>\s*{" src/ -A 50 | head -200
# Ask AI to identify complexity
gemini -m pro -o text -e "" "Identify the most complex functions in this code and suggest simplifications:
$(cat src/complex-file.ts)"
# Check coverage before refactoring
npm test -- --coverage
# Identify untested code
npx jest --coverage --coverageReporters=text | grep -E "^(File|.*\|)"
gemini -m pro -o text -e "" "Plan a safe refactoring for:
CURRENT CODE:
$(cat src/file.ts)
GOAL: [what you want to improve]
Provide:
1. Step-by-step plan
2. Risk assessment
3. Rollback strategy
4. Tests to add first"
# Make one small change
# Run tests
npm test
# Commit if green
git add -A && git commit -m "refactor: [specific change]"
# Repeat
# Compare before/after behavior
# Run integration tests
# Manual testing if needed
gemini -m pro -o text -e "" "Extract a reusable function from this code:
$(cat src/file.ts | sed -n '10,50p')
Create a well-named function with:
- Clear parameters
- Typed return value
- JSDoc comment
- Single responsibility"
gemini -m pro -o text -e "" "Simplify these conditionals:
\`\`\`typescript
$(rg -A 10 "if.*{" src/file.ts)
\`\`\`
Use:
- Early returns
- Guard clauses
- Lookup tables where appropriate
- Optional chaining"
# Find similar code
gemini -m pro -o text -e "" "Find duplicate or similar code patterns in:
$(cat src/*.ts)
Suggest how to DRY it up with:
- Shared functions
- Higher-order functions
- Generics if TypeScript"
// rename-transform.ts
export default function transformer(file, api) {
const j = api.jscodeshift;
return j(file.source)
.find(j.Identifier, { name: 'oldName' })
.replaceWith(j.identifier('newName'))
.toSource();
}
# Dry run
npx jscodeshift -d -p -t transform.ts src/
# Apply
npx jscodeshift -t transform.ts src/