primitives

The Radix UI component library source packages: packages/core (Primitive, Number, Rect utilities) and packages/react (UI components, primitives, hooks, and utilities). This is the foundational layer that all other layers depend on.

Development and demonstration applications: Storybook stories and configuration for interactive component documentation, and SSR test pages for server-side rendering validation.

End-to-end test suite using Cypress covering Dialog, ContextMenu, DropdownMenu, Form, Menubar, Select, and Toast components with shared commands and test utilities.

Internal build and quality tooling: monorepo builder scripts (radix-build, builder.js), shared ESLint configurations for React packages and Vite projects, and test data fixtures.

Root-level configuration files for the monorepo: ESLint and Cypress configuration that apply to the entire project.