React Intersection Observer Hook

The `react-intersection-observer-hook` package provides declarative React hooks, specifically `useIntersectionObserver` and `useTrackVisibility`, to interact with the browser's native Intersection Observer API. It simplifies detecting when a React component enters or exits the viewport, enabling features like lazy loading, infinite scrolling, and triggering animations. The current stable version is 4.0.2, with active development focusing on modern React compatibility, demonstrated by its recent update for React 19 in v4.0.0. Releases are frequent, addressing bugs and improving API ergonomics. Key differentiators include a dedicated `useTrackVisibility` for simpler boolean visibility checks, explicit `rootRef` handling for scrollable containers, and robust support for both ES Modules and CommonJS environments since v3.0.0, ensured through modern bundling practices.