Zero-dependency, tiny (~800B) CSS variable (custom property) observer
A polyfill for the Resize Observer API
A React hook that allows you to use a ResizeObserver to measure an element's size.
Polyfills the ResizeObserver API and supports box size options from the latest spec
Monitor if a component is inside the viewport, using IntersectionObserver API
Resize observer for React
React MutateObserver Component
Observe CSS property changes on any elements
Reactive primitives for observing resizing of HTML elements.
Resize observer for React
A React hook for the IntersectionObserver API that uses a polyfill when the native API is not available
A list of all CSS color keywords.
[](https://brm.us/style-observer)
A React hook that fires a callback whenever ResizeObserver detects a change to its size
Detect if web fonts are available
Self-host the Inter font in a neatly bundled NPM package.
🏯 PositionObserver is a JavaScript tool that provides a way to asynchronously observe changes in the position of a target element within its viewport.
Allows you to monitor DOM elements that match a CSS selector
Tracks the intersection of a DOM element and its containing element or the viewport.
An implementation and polyfill of the Resize Observer draft.
CSS vendor prefix detection and property feature testing.
React hook to use IntersectionObserver declaratively.
Self-host the Geist font in a neatly bundled NPM package.
A polyfill for the Resize Observer API