CLAUDE.md

Coder Extension Development Guidelines

Build and Test Commands

• Build: yarn build
• Watch mode: yarn watch
• Package: yarn package
• Lint: yarn lint
• Lint with auto-fix: yarn lint:fix
• Run all tests: yarn test
• Run specific test: vitest ./src/filename.test.ts
• CI test mode: yarn test:ci

Code Style Guidelines

• TypeScript with strict typing
• No semicolons (see .prettierrc)
• Trailing commas for all multi-line lists
• 120 character line width
• Use ES6 features (arrow functions, destructuring, etc.)
• Use const by default; let only when necessary
• Prefix unused variables with underscore (e.g., _unused)
• Sort imports alphabetically in groups: external → parent → sibling
• Error handling: wrap and type errors appropriately
• Use async/await for promises, avoid explicit Promise construction where possible
• Test files must be named *.test.ts and use Vitest