Vue Native Core is a deprecated fork of Vue.js 2.x that compiles Vue component templates into render functions compatible with React Native (iOS/Android) and React Web. It provides a full reactive state management system (Vue's observer pattern), virtual DOM diffing, and a template compiler pipeline that transforms .vue single-file components into JavaScript modules usable by React Native's Metro bundler. The architecture mirrors Vue 2: core reactivity (Dep, Watcher, Scheduler), virtual DOM (createElement, patch), and a multi-stage compiler (parser → AST → code generator) with platform-specific backends for native and web. It also offers runtime helpers to emulate Vue directives (v-if, v-for, events) and component lifecycle in React. However, the project is explicitly deprecated, depends on outdated versions (Babel 6, React 16.8, React Native 0.45–0.59+), and uses deprecated React lifecycle methods (UNSAFE_componentWillMount). The codebase shows heavy modification of core Vue files, making it difficult to merge upstream updates, and its build system is complex and fragile. Despite these issues, the reactive state wrapper (Vue.observer) and the template-to-render compilers demonstrate non-trivial adaptation of Vue to React ecosystem.