React component using the browser's Intersection Observer API to watch for when an element is within (or intersecting with) the viewport.
@vue/reactivity
Element React module for WordPress.
Dynamic accessibility analysis for React using axe-core
Wrap your component up as a custom element
A simple function for calculating the chi-squared probability for a given observation set and expected set"
Glue layer for reactivity
A simple low level base class for creating fast, lightweight web components
Quadrat analysis lays a set of equal-size areas(quadrat) over the study area and counts the number of features in each quadrat and creates a frequency table.
利用React隐藏特性来让Context只在当前组件使用字段改变时更新组件。
Get resize events of an observed DOM element's height, width etc. from a resize-observer.
Monitor the performance of your React Native components in realtime
PatternFly Elements Core Library
Use [Preact signals](https://github.com/preactjs/signals) with the interface of a plain JavaScript object.
Substrate for self-improving agents: traces, verifiable rewards, preferences, GEPA / reflective mutation, auto-research, replay, sequential anytime-valid stats, and release gates.
Get v8 stack traces as an array of CallSite objects.
ESLint plugin for the Nectary monorepo. Two rules.
object-observer utility provides simple means to (deeply) observe specified object/array changes; implemented via native Proxy; changes delivered in a synchronous way
Munchi Printer SDK Bridge
Synchronize an embedded video player with other components on a page
Persistence layer for redux with flexible backends
A Javascript Membrane implementation using Proxies to observe mutation on an object graph
Avatar for PatternFly Elements
[](https://circleci.com/gh/wehriam/ipfs-observed-remove) [](http://badge.fury.io/js/ipfs-observed-remove) [![co
Watches the couch database for changes and triggers callbacks defined for creation, deletes and updates.
ActiveRecord Reactors provide a defined way to react on default or custom Active Record callbacks. Observers without the magic, and without the hassle.
Every class or object can be transformed to observer and dynamically react to data changes across several models. Observable module is using build in Active Record hooks or database triggers which can be turned on in multiple App environment.
RubyPi is a minimal, composable AI agent harness for Ruby. Build production-ready LLM agents and AI agents with a unified provider interface across OpenAI, Anthropic Claude, and Google Gemini, plus first-class support for tool calling (function calling), streaming responses, automatic retries, provider fallback, context compaction, and a think-act-observe agent loop. Anti-framework design — small, idiomatic, and explicit. Ideal for building autonomous AI agents, ReAct agents, tool-using LLM agents, and chatbots in Ruby.