End to end performance test
Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML.
JavaScript implementations of network transports, cryptography, ciphers, PKI, message digests, and various utilities.
Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js
<p align="center"><img src="https://dydx.exchange/icon.svg?" width="256" /></p>
A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.
Performance testing companion for React and React Native
A JavaScript library for efficient immutable updates
HTML5 2d canvas library.
[Currents](https://currents.dev/playwright) is the most popular and advanced cloud-based platform for Playwright - debugging, error analysis, real-time analytics, orchestration, and more
walk paths fast and efficiently
Reads / writes floats / doubles from / to buffers in both modern and ancient browsers.
> Monorepo of isomorphic utility functions
Playwright plugin for analyzing test flow performance
A JSON schema validator that will run on Cloudflare workers. Supports drafts 4, 7, 2019-09, and 2020-12.
[](https://www.npmjs.com/package/jsdoc-type-pratt-parser) []
🧐 Identify slow tests during development
Intl.LocaleMatcher ponyfill
Implements performance.now (based on process.hrtime).
Firebase performance for web
Parts of React UFO that are publicly available
An implementation of the WebDriver BiDi protocol for Chromium implemented as a JavaScript layer translating between BiDi and CDP, running inside a Chrome tab.
A shim for the setImmediate efficient script yielding API
A custom version of node-forge with selected algorithms.