react-use-observer
Performant react hooks for WebApi Observers, useResizeObserver, useInteractionObserver, useMutationObserver
react-cool-inview
React hook to monitor an element enters or leaves the viewport (or another element).
@fastly/performance-observer-polyfill
<h1 align="center" style="border-bottom: none;">🔎 PerformanceObserver Polyfill</h1> <p align="center"> <a href="https://travis-ci.org/fastly/performance-observer-polyfill"> <img alt="Travis" src="https://img.shields.io/travis/fastly/performance-obs
svelte-inview
A Svelte action that monitors an element enters or leaves the viewport or a parent element. Performant and efficient thanks to using Intersection Observer under the hood.