chore: add CLAUDE.md

CLAUDE.md

@@ -0,0 +1,101 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+Dockview is a zero-dependency layout manager supporting tabs, groups, grids and splitviews. It provides framework support for React, Vue, and vanilla TypeScript. The project is organized as a Lerna monorepo with multiple packages.
+
+## Development Commands
+
+### Build
+- `npm run build` - Build core packages (dockview-core, dockview, dockview-vue, dockview-react)
+- `npm run clean` - Clean all packages
+
+### Testing
+- `npm test` - Run Jest tests across all packages
+- `npm run test:cov` - Run tests with coverage reporting
+
+### Linting
+- `npm run lint` - Run ESLint on TypeScript/JavaScript source files across packages
+- `npm run lint:fix` - Run ESLint with automatic fixing of fixable issues
+
+### Documentation
+- `npm run docs` - Generate documentation using custom script
+
+### Package Management
+- `npm run version` - Version packages using Lerna
+- `npm run package` - Package build artifacts
+- `npm run package-docs` - Package documentation
+
+## Architecture
+
+### Monorepo Structure
+- **packages/dockview-core** - Core layout engine (TypeScript, framework-agnostic)
+- **packages/dockview** - React bindings and components
+- **packages/dockview-vue** - Vue bindings and components
+- **packages/dockview-angular** - Angular bindings and components
+- **packages/dockview-react** - Additional React utilities
+- **packages/docs** - Documentation website (Docusaurus)
+
+### Key Components
+
+#### Core Architecture (dockview-core)
+- **DockviewComponent** - Main container managing panels and groups
+- **DockviewGroupPanel** - Container for related panels with tabs
+- **DockviewPanel** - Individual content panels
+- **Gridview/Splitview/Paneview** - Different layout strategies
+- **API Layer** - Programmatic interfaces for each component type
+
+#### Framework Integration
+- Framework-specific packages provide thin wrappers around core components
+- React package uses HOCs and hooks for component lifecycle management
+- Vue package provides Vue 3 composition API integration
+- All frameworks share the same core serialization/deserialization logic
+
+#### Key Features
+- Drag and drop with customizable drop zones
+- Floating groups and popout windows
+- Serialization/deserialization for state persistence
+- Theming system with CSS custom properties
+- Comprehensive API for programmatic control
+
+### Testing Strategy
+- Jest with ts-jest preset for TypeScript support
+- Testing Library for React component testing
+- Coverage reporting with SonarCloud integration
+- Each package has its own jest.config.ts extending root configuration
+
+### Build System
+- Lerna for monorepo management
+- Rollup for package bundling
+- TypeScript for type checking and compilation
+- Gulp for additional build tasks (SCSS processing)
+
+### Code Quality
+- ESLint configuration extends recommended TypeScript rules
+- Linting targets source files in packages/*/src/** (excludes tests, docs, node_modules)
+- Configuration centralized in .eslintrc.js with ignore patterns
+- Current rules focus on TypeScript best practices while allowing some flexibility
+- Most linting issues require manual fixes (type specifications, unused variables, null assertions)
+
+## Development Notes
+
+### Working with Packages
+- Use Lerna commands for cross-package operations
+- Each package can be built independently
+- Core package must be built before framework packages
+- Use workspaces for dependency management
+
+### Adding New Features
+- Start with core package implementation
+- Add corresponding API methods in api/ directory
+- Create framework-specific wrappers as needed
+- Update TypeDoc documentation
+- Add tests in __tests__ directories
+- Run `npm run lint` to check code quality before committing
+
+### State Management
+- Components use internal state with event-driven updates
+- Serialization provides snapshot-based state persistence
+- APIs provide reactive interfaces with event subscriptions