This is a production-grade React library that wraps Airbnb's lottie-web to render After Effects animations. It provides declarative React components (<Lottie>, <LottieSvg>, <LottieLight>), hooks (useLottie, useLottieSvg, useLottieLight), a full player UI with play/pause/seek/speed controls (LottieControls), and an interactivity layer for scroll-driven or visibility-triggered animations. The library ships three build variants optimized for bundle size, all with 100% statement coverage and strict TypeScript types. It supports both React 18 and 19, is SSR and React Server Component safe, and enforces per-import size budgets via CI. The codebase demonstrates an unusually rigorous engineering culture with no technical debt shortcuts.