RunJS is a fast, minimalistic desktop playground for JavaScript and TypeScript that automatically executes your code and displays the output in real-time. Available for macOS, Windows, and Linux, it acts as a lightweight scratchpad that allows you to experiment with code snippets, libraries, and language features without the overhead of spinning up a full development environment or using standard browser dev tools. 🌟 Key Features
Instant Evaluation: Code executes seamlessly on the fly, showing line-by-line results directly to the right of your editor as you type.
NPM Package Support: Install and import any library from the NPM ecosystem to quickly test third-party tools.
TypeScript & Modern Syntax: Supports modern ES Module / CommonJS syntax, TypeScript types, and auto-completion natively via Babel.
Web & Node.js APIs: Access standard browser DOM APIs and the underlying Node.js runtime environments simultaneously.
Snippet Library: Save and manage frequently used code blocks locally on your computer. 💻 Interface and Usability
The app features a clean, distraction-free layout split into a text editor on the left and a reactive console panel on the right. Because it operates completely as a local desktop app rather than a cloud sandbox, it runs extremely fast, works offline, and keeps your code private. Version 4 introduces dedicated runtimes, advanced logpoints, and a fully rebuilt output panel for smoother debugging. 💰 Pricing Model Dev workflow tips: RunJS the ultimate JavaScript playground
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