A React hook for the IntersectionObserver API that uses a polyfill when the native API is not available

Through the modern browser Observer API of Mutation Observer and Intersection Observer, lazy loading of img tags and friendly prompts for empty addresses or loading failures

a SuperClass mixin that dynamically imports undefined custom element definitions

Detect if web fonts are available

🏯 PositionObserver is a JavaScript tool that provides a way to asynchronously observe changes in the position of a target element within its viewport.

Schema validation for the mutation server protocol (MSP).

ESLint React's ESLint plugin for interacting with Web APIs

A React hook that fires a callback whenever ResizeObserver detects a change to its size

<p align="center"> <img alt="Reactour" title="Reactour" src="https://raw.githubusercontent.com/elrumordelaluz/reactour/main/packages/utils/logo.svg" width="400"> </p> <p align="center"> A set of utilities used by <code>@reactour</code> packages </p>

A rich text editor for everyday writing

A polyfill for the Resize Observer API

An implementation and polyfill of the Resize Observer draft.

React bindings for MobX. Create fully reactive components.

Element resize detection, both modern way and cross browser.

Tracks the intersection of a DOM element and its containing element or the viewport.

Plugin-owned human command registry for DeepSeek Harness UI surfaces

React hook to use IntersectionObserver declaratively.

@vue/reactivity

Cypress command to wait until DOM has finished changing

[pull-stream](http://pull-stream.github.io/) source of mutations to a dom element using [Mutation Observer](https://developer.mozilla.org/en/docs/Web/API/MutationObserver). Emits [Mutation Records](https://developer.mozilla.org/en-US/docs/Web/API/Mutation