Jest not recommended to be used in Node.js due to instanceOf operator issues

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  • SurveyJS - Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App
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  • vitest

    Next generation testing framework powered by Vite.

  • Vitest[0] is a drop in replacement to Jest that we've had exceptional success with. Faster test runs, more reliable, default TS and ESM support, etc.


  • contributing-tests

  • SurveyJS

    Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

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  • React

    The library for web and native user interfaces.

  • There's actually a recent PR up for a `` component:


  • react-ssd1306

    📟 A React Renderer for SSD1306 OLED chip on Raspberry Pi.

  • It’s often cheaper to couple things tightly. Abstractions and interfaces have costs. However, they also have benefits. Perhaps React and Preact is one such example.

    React is a tiny fully agnostic library that does components, props, hooks and all that jazz. You can use it anywhere, from DOM to CLI. To tie it to DOM, a separate library exists—named, unimaginatively, ReactDOM—and that’s where the 100KB heft comes in.

    Preact is the opposite: smaller, but coupled to DOM. The architecture probably doesn’t facilitate cool stuff like render components to embedded LCD[0], and even to do SSR you would have to add extra libraries.


  • bundlejs

    An online tool to quickly bundle & minify your projects, while viewing the compressed bundle size, all running locally on your browser. A quick and easy way to bundle, minify, and compress (gzip and brotli) your ts, js, jsx and npm projects all online, with the bundle file size.

  • It's somewhere in between.

    React as a lib and architecture _is_ platform-agnostic. The core logic is defined in the `react-reconciler` package. It contains all the implementation of rendering components, diffing trees, managing state, and running effects, as well as all the "Suspense" implementation.

    However, the way `react-reconciler` works is that it's built _into_ each platform-specific renderer implementation. So, the size of `react-dom` is actually the size of `react-reconciler` + all the DOM-specific behavior.

    A quick check of suggests it's about 100K minified. is 138K, so that tells me that the DOM-specific logic is 38K.

  • npm

  • Things like the sparkline charts on npmjs (e.g. ) are interactive SVGs. I think they're pretty common for data visualizations of all kinds

  • patch-package

    Fix broken node modules instantly 🏃🏽‍♀️💨

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

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  • bun

    Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one

  • oletus

    Minimal ECMAScript Module test runner

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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