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Register a components init function & observe selector. The init function will be fired immedietly after detection of selector.

Performant react hooks for WebApi Observers, useResizeObserver, useInteractionObserver, useMutationObserver

React hook to detect if web fonts are available 🪝

Angular 21.x library to monitor changes to elements. Uses ResizeObserver to do the work.

Fast and simple FPS meter for React. Renders to a canvas element and uses requestAnimationFrame to update the FPS counter.

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.

Easily monitor your ThreeJS performances.

React Hook for detecting when an element is in the viewport

Component for giving you `onResize`.

one rAF to rule them all

Observe DOM mutations with a factory-based API

TypeScript definitions for fps

React hook for component-size

A React component that notifies its children of hover interactions.

[](https://badge.fury.io/js/window-resize-subject) [](https://opensource.org/licenses/MIT) ![CI](https://github.com/mya-ak

🚀 Boost your React Native app's performance with a single line of code

A polyfill for the `BoundingClientRectObserver`

Observable keypath engine.

React wrapper for mutation observers.