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

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

MobX bindings for Octane, reusing the MobX core with Octane-native observer hooks and components.

Svelte use:action for element resize notifications using ResizeObserver.

The Splide extension for observing the intersection of the slider with the viewport.

Deliver [Spectrum UI Icons](https://spectrum.adobe.com/page/icons/) as either:

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

Accurate TOC/sidebar links without compromises for Vue 3.

Polyfills the ResizeObserver API and supports box size options from the latest spec

Utility to check React Native node visibility on the screen.

MobX library for non-intrusive class-based model enhancement. Acting as a sentinel, it provides change detection, reactive validation, and form integration capabilities without contamination.

Tiny fps meter with customizable colors

Paste spreadsheet cells as a Markdown table.

A C++ native canvas 2D/WebGL component based on gpu opengl glsl shader GCanvas

[](https://www.npmjs.com/package/stats-gl) [](https://www.npmjs.com/package/st

Server-side Node.js library for processing ObserveRTC Samples

A polyfill for the Resize Observer API

`<sp-theme>` provides Spectrum design tokens (CSS custom properties) to everything in its DOM scope. Components inside a theme use these tokens to render correctly. The element itself does not visually “apply” styles to your app; it exposes the tokens so

handle elements lifecycle through CSS selectors

Browser-default computed-style observer for the Fuaran UI typed Node tree — reads back the resolved computed styles of a rendered tree via getComputedStyle + an effective-background composite walk and derives a fixed vocabulary of resolved-style flags (co