Babel vs Skulpt

Babel is a JavaScript compiler that converts modern syntax into code compatible with current and older browsers or other environments. Its transformation pipeline is built from plugins, which users can combine into presets or write themselves. Babel provides transformers for the latest JavaScript and a React preset for JSX. It can also add features through third-party polyfills such as core-js, run codemods, and remove Flow or TypeScript type annotations; it does not check types. Source maps support debugging compiled output. The command-line interface can compile files or directories, watch for changes, and generate source maps. Installation documentation covers npm, Yarn, pnpm, and Bun. A standalone build can run in browsers and other non-Node.js environments, including on scripts marked text/babel or text/jsx, but the documentation recommends ahead-of-time transpilation with a Node.js build system for production. Babel is free, MIT-licensed, community-funded, and maintained by volunteers. The project directs support questions to GitHub Discussions, Slack, Stack Overflow, or Bluesky.

Skulpt is a free, web-based implementation of Python that executes code entirely in the browser. It requires no preprocessing, plugins, or server-side support. The online editor provides indentation, standard editing shortcuts, and keyboard commands to run all code or only a selection. Developers can embed Skulpt in a webpage or HTML project by loading `skulpt.js` or `skulpt-min.js` together with `skulpt-stdlib.js`, and they can create and host custom modules. The usage guide also describes embedding Trinket examples in an iframe, remixing them, and saving work to a free Trinket account. Skulpt is presented for learning and teaching Python, with a project gallery for educational examples. Its master branch uses Python 3.7.3 grammar, while Python 2 remains available for projects needing it. Documentation says language coverage is incomplete, with some features missing or partial. The runtime may use MIT or PSFLv2 licensing. CLI and API access are listed.