A Lit directive for observing an element in a template as it intersects the viewport, plus Lit's IntersectionController.

A hook to register an intersection observer listener

Detect when an element is becoming visible or hidden on the page.

An Implementation of ES Observables

TypeScript definitions for resize-observer-browser

<div align="center"> <img alt="demo" src="https://user-images.githubusercontent.com/1911623/91918354-0b2ef680-ec99-11ea-9250-e040d0f3be76.gif" width="600" /> <br/> </div>

Symbol.observable ponyfill

Simple Semver and SemverRange classes

A web component for math input

Package manager detector

Intersection observer for complex or embedded react native view

A simple library that lets you know whether a Component is visible or not.

React utilities for observing when elements enter or leave the viewport using Intersection Observer API.

Vanilla JavaScript plugin for lazyloading images

Reference Implementation of the Dufour-Peyton Intersection Algorithm. Calculates the Intersections of Arbitrary Polygons with a Geospatial Raster.

A module to check if a polygon self-intersects using a sweepline algorithm

Apply boolean polygon clipping operations (intersection, union, difference, xor) to your Polygons & MultiPolygons.

Flowtype linting rules for ESLint.

React List Component using the Intersection Observer API

React hook to monitor an element enters or leaves the viewport (or another element).