FormKit is a form-building framework for Vue and React, organized as a monorepo of 15+ packages. The architecture is a core (framework-agnostic) node tree that manages form state, validation, schema rendering, and plugins, with separate packages for framework bindings (Vue, React, Nuxt), inputs, validation rules, internationalization (30+ locales), icons, themes (CSS, Tailwind, UnoCSS), addons (multi-step, floating labels, localStorage), a CLI for scaffolding and theme generation, and Zod integration. It uses a schema system (JSON-serializable) to define form layouts and conditional rendering, and a plugin/feature pattern for extensibility. The repository demonstrates high engineering quality: extensive test coverage (unit, type, e2e memory leak tests), well-structured abstractions (observers, message stores, composables), and cross-framework consistency. However, there are minor inconsistencies (license declared as UNLICENSED despite README claiming MIT, incomplete translations in some locales, deprecated packages like @formkit/tailwindcss, and potential brittleness in remote API dependencies in the CLI). Overall, it's a production-grade form solution with solid reusability of its core patterns.

This repository is a framework-agnostic drag-and-drop library developed by FormKit. It provides a data-first approach where consumers manage a reactive array as the source of truth, and the library handles DOM reordering internally. The core is written in TypeScript and is small (~4KB gzip), with first-class adapters for React, Vue, Solid, and Marko. The architecture consists of a central state machine using WeakMap stores to associate DOM elements with drag state, an event emitter pattern for global and parent-level events, and a plugin system for extensibility (animations, drop-or-swap, insert). Key entry points include the `dragAndDrop` function and framework-specific hooks/composables (e.g., `useDragAndDrop` for React). The library supports native HTML drag-and-drop and synthetic pointer-based dragging for touch devices, with features like multi-drag, drag handles, shadow DOM, and configurable animations. External dependencies are minimal—only peer dependencies for framework adapters and optional Marko runtime. The repository also includes a comprehensive Playwright test suite covering sorting, transfer, animations, and edge cases, plus a Nuxt-based documentation site with live examples for all supported frameworks.