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# Comm Project Development Guide
## Build & Test Commands
- Run tests: `yarn workspace [lib|web|keyserver|native] test`
- Test all packages: `yarn jest:all`
- Run lint: `yarn eslint:all`
- Fix lint issues: `yarn eslint:fix`
- Check Flow types: `yarn flow:all` or `yarn workspace [workspace] flow`
- Run dev server: `yarn workspace [workspace] dev`
- Clean install: `yarn cleaninstall`
## Code Style
### Types
- Use Flow for static typing with strict mode enabled
- Always include `// @flow` annotation at the top of JS files
- Export types with explicit naming: `export type MyType = {...}`
### Formatting
- Prettier with 80-char line limit
- Single quotes, trailing commas
- Arrow function parentheses avoided when possible
- React component files named \*.react.js
### Naming
- kebab-case for filenames (enforced by unicorn/filename-case)
- Descriptive variable names
### Imports
- Group imports with newlines between builtin/external and internal
- Alphabetize imports within groups
- No relative imports between workspaces - use workspace references
### React
- Use functional components with hooks
- Follow exhaustive deps rule for useEffect/useCallback
- Component props should use explicit Flow types
### Error Handling
- Use consistent returns in functions
- Handle all promise rejections
