Lightweight library with virtual time functions for composing asynchronous and event-based operations in JavaScript

Webpack Virtual Modules

React Virtual List Component

A fork of @effect/vitest whose defaults make the lazy test a good test: expect bound to the test's own callback, one check per observed state, fresh layers, a second run that catches leaked state, virtual time, and properties refuted against a constant im

Morph a DOM tree to another DOM tree (no virtual DOM needed)

A batched diff-based DOM rendering strategy

Clock plugin for Electron Stagewright: deterministic virtual time (install, freeze, and advance the clock) for testing time-dependent UI.

Virtual scrolling list component for React.

Load virtual modules from memory

The editing engine of CKEditor 5 – the best browser-based rich text editor.

Lightweight older browser compatible library with virtual time functions for composing asynchronous and event-based operations in JavaScript

A tiny React hook for rendering large datasets like a breeze.

A Vite plugin that takes the CSS and adds it to the page through the JS. For those who want a single JS file.

Core filesystem primitives: Node, Link, File, Superblock

Web Component for displaying a virtual/infinite list of items.

Virtual-time and marble testing for RxJS 9 Observable contracts

Virtual syntax highlighting for virtual DOMs and non-HTML things

An NPM package used for installing and configuring NGINX virtual hosts.

Cooperative deterministic scheduler for mock I/O boundaries. Holds enqueued completions until their virtual time arrives, then releases them in a PRNG-shuffled order — making all macro-level race conditions fully reproducible with the same seed. Does **no

A tiny but mighty list virtualization component, with zero dependencies 💪