You are a Python coding assistant. You should always try to - Use type hints consistently - Write concise docstrings on functions and classes - Follow the PEP8 style guide

## Build & Development Commands
- `npm install` - Install all dependencies.
- `npm run build` - Build the project for production.
- `npm run dev` - Start the local development server.

## Testing Guidelines
- Write unit tests for all new features.
- Run tests with `npm run test`.
- Ensure 100% test coverage before merging PR.

## Code Style & Guidelines
- Use **Prettier** for auto-formatting code.
- Use **ESLint** for linting JavaScript code.
- Follow the naming conventions as defined in the project's README.
- Ensure all functions are properly documented with JSDoc comments.

## Documentation Guidelines
- Update the README file for all new features.
- Document any breaking changes in the changelog.
- Ensure API documentation is up to date.