QuickJS

Node.js is an open-source, cross-platform JavaScript runtime environment used to run server-side and other JavaScript applications. The videos describe it as a common runtime and application stack for web applications, including full-stack TypeScript projects, while the official project repository documents Current, Long Term Support (LTS), and nightly release channels. The project uses an open governance model and is supported by the OpenJS Foundation; it is distributed under the MIT license.

scriptc is an experimental TypeScript-to-native compiler from Vercel Labs. It uses the TypeScript compiler for parsing and type checking, then emits typed IR, readable C, textual LLVM IR, native assembly and object files, native executables, or WebAssembly modules. Static builds include a small native runtime and do not require Node.js or a JavaScript engine when run; code that cannot compile statically is reported through diagnostics, and coverage reporting identifies the statically compilable portions and blockers. For npm packages and other dynamically typed code, an optional dynamic mode embeds quickjs-ng. The compiler itself requires Node.js 24 or newer and targets macOS, Linux, Windows, and WebAssembly through WASI Preview 1.

Sandpack is a React component toolkit for embedding live-running code editing and preview experiences in web applications. It runs JavaScript and Node.js applications in the browser and can be used for interactive documentation, coding environments, low-code tools, generated website previews, and embedded playgrounds. Sandpack provides templates containing project files and dependencies, custom setup for changing dependencies or file structure, configurable built-in components, themes, and composable components and hooks for custom interfaces. It uses CodeMirror for editor functionality, supports npm dependencies, hot module reloading, error overlays, caching, and Node.js execution through its Nodebox runtime. The Sandpack Client package exposes a framework-agnostic bundler protocol, and the toolkit supports frameworks including Next.js, Remix, Vite, and Astro.

React is a JavaScript library for building web and native user interfaces. It uses declarative views that update the appropriate components when application data changes, and lets developers compose encapsulated, state-managing components into larger interfaces. React code can use JSX, an HTML-like syntax for defining interface elements, although JSX is optional. The library is designed for gradual adoption, can render on the server with Node, and supports mobile applications through React Native. Its core repository is developed openly on GitHub under the MIT license.

Moment.js is a JavaScript date and time formatting library. It formats dates and times, calculates relative and calendar time, supports date arithmetic, and provides localized formatting across many languages. The project is in maintenance mode and can be installed through package managers including npm, Yarn, spm, and Meteor.