BUGBOT

Overview

Essential rules for reviewing code changes in the Cypress monorepo.

Critical PR Review Rules

Security Checklist

• Input validation: All user inputs are validated
• Path traversal: File paths are safely resolved
• Sensitive data: No secrets or sensitive info in logs
• Network requests: URLs are validated before requests
• File permissions: Proper permission handling for file operations

Performance Checklist

• Startup time: No blocking operations during startup
• Memory usage: Resources are properly disposed
• Bundle size: No unnecessary dependencies added
• Async operations: Non-blocking where possible
• Caching: Appropriate caching strategies used

Cypress-Specific Rules

• Browser compatibility: Test on Chrome, Firefox, Edge, Safari
• Network stubbing: Proper request/response mocking
• DOM manipulation: Safe element selection and manipulation
• Test isolation: Tests don't interfere with each other
• Command chaining: Proper use of Cypress command chaining
• Assertions: Meaningful assertions with clear failure messages
• Timeouts: Appropriate timeout values for different operations
• Retry logic: Proper retry strategies for flaky operations

Code Quality Rules

• Naming: Variables and functions have descriptive names
• Comments: Complex logic is explained with comments
• Imports: Imports are organized and minimal
• Exports: Only necessary functions/classes are exported
• Side effects: Functions are pure when possible
• Error boundaries: Proper error boundaries in React components
• Magic numbers and Regex: Extract to named constants

Testing Rules

• Test naming: Tests describe the behavior being tested
• Test isolation: Each test is independent
• Mocking: External dependencies are properly mocked
• Coverage: Critical paths have test coverage
• Edge cases: Error conditions and edge cases are tested
• Performance: Tests don't take too long to run
• Flakiness: Tests are deterministic and not flaky
• Setup/teardown: Proper test setup and cleanup

Package-Specific Priorities

Critical Packages (Highest Priority)

• @packages/server: The heart of Cypress - changes affect everything
  • Focus: Async operations, file system security, proxy logic, performance, cross-platform compatibility
• @packages/driver: Runs in browser context - security and compatibility crucial
  • Focus: Browser compatibility, DOM safety, network stubbing, test commands, memory management
• cli: Main command-line interface - user-facing entry point
  • Focus: Command-line argument parsing, user experience, error handling, cross-platform compatibility

User-Facing Packages (High Priority)

• @packages/app: Main desktop application
  • Focus: UI/UX, Vue component logic, accessibility, state management, performance
• @packages/launchpad: Project setup UI
  • Focus: User experience, GraphQL integration, onboarding flow, project scaffolding
• @packages/runner: Test runner interface
  • Focus: React component logic, UI state management, test execution display

Published Packages (High Priority)

• @cypress/ packages*: Published to npm - breaking changes critical
  • Focus: Backward compatibility, documentation, comprehensive testing, API stability
• @cypress/vue: Vue component testing support
  • Focus: Vue integration, component testing logic, Vue 3 compatibility
• @cypress/react: React component testing support
  • Focus: React integration, component testing logic, React version compatibility
• @cypress/angular: Angular component testing support
  • Focus: Angular integration, component testing logic, Angular CLI integration
• @cypress/vite-dev-server: Vite development server integration
  • Focus: Vite integration, dev server configuration, ESM compatibility

Core Infrastructure (High Priority)

• @packages/config: Configuration management
  • Focus: Configuration schema changes, validation logic, backward compatibility
• @packages/errors: Error handling
  • Focus: Error message clarity, error handling patterns, user-friendly messages
• @packages/types: TypeScript definitions
  • Focus: Type safety, API compatibility, public interface definitions
• @packages/network: Network utilities
  • Focus: Network security, request/response handling, HTTP client utilities
• @packages/proxy: Proxy management
  • Focus: Proxy security, traffic handling, request interception
• @packages/net-stubbing: Network stubbing
  • Focus: Stubbing logic, network simulation accuracy, request mocking
• @packages/https-proxy: HTTPS proxy functionality
  • Focus: HTTPS security, certificate management, SSL/TLS handling

Browser & Platform (High Priority)

• @packages/launcher: Browser management
  • Focus: Cross-platform compatibility, browser binary handling, process management
• @packages/electron: Electron integration
  • Focus: Electron API usage, binary packaging, cross-platform builds, app distribution
• @packages/extension: Browser extension
  • Focus: Extension API usage, browser compatibility, communication protocols

Data & State Management (Medium Priority)

• @packages/data-context: Data management
  • Focus: State management patterns, data consistency, application state, GraphQL schema changes, resolver logic, API schema definition
• @packages/socket: WebSocket communication
  • Focus: Socket security, message handling, real-time communication

Code Processing (Medium Priority)

• @packages/v8-snapshot-require: V8 snapshot support
  • Focus: Snapshot compatibility, performance impact, Electron integration
• @packages/packherd-require: Dependency packing
  • Focus: Bundle optimization, dependency management, module resolution

UI & Frontend (Medium Priority)

• @packages/frontend-shared: Shared frontend utilities
  • Focus: Component reusability, utility functions, shared UI components
• @packages/icons: Icon assets
  • Focus: Asset organization, icon consistency, visual design
• @packages/reporter: Test reporting
  • Focus: Report accuracy, formatting logic, test result display

Development & Build (Medium Priority)

• @packages/ts: TypeScript configuration
  • Focus: TypeScript configuration, compilation setup, type checking
• @packages/web-config: Web configuration
  • Focus: Configuration logic, build setup, web app configuration
• @packages/scaffold-config: Project scaffolding
  • Focus: Scaffolding logic, template accuracy, project initialization

Utility Packages (Lower Priority)

• @packages/root: Root package
  • Focus: Monorepo setup, package coordination
• @packages/example: Example project
  • Focus: Example accuracy, documentation quality, test examples
• @packages/resolve-dist: Path resolution
  • Focus: Asset resolution, path handling, build artifact management

Tooling Packages (Lower Priority)

• @tooling/electron-mksnapshot: Electron snapshot tool
  • Focus: Snapshot generation logic, Electron integration, performance optimization
• @tooling/packherd: Dependency packing tool
  • Focus: Bundle optimization, dependency resolution, module bundling
• @tooling/v8-snapshot: V8 snapshot tooling
  • Focus: Snapshot management, performance optimization, V8 integration