machines-demo

Interactive in-browser playground for Turing and Post machines.

Live demo: demo.machines.mellonis.ru

Two tabs (Turing, Post) where you write JavaScript that builds a machine — using the published @turing-machine-js/machine and @post-machine-js/machine libraries — and watch it execute on an animated tape. Auto-running demo on first load, manual control of the tape head via a movement/symbol/Apply panel, single-step and paused-auto-step execution, and a log of every command applied.

Running locally

npm install
npm run dev

The dev server prints a URL; open it in a browser.

Build

npm run build

Static bundle emitted to dist/. Serve with any static host. The build references hashed assets, so far-future caching is safe.

Tech

• Vite (vanilla JS, no framework)
• CodeMirror 6 for the editor
• Tabler Icons (SVG ?raw imports)
• User code runs inside a Web Worker — terminate-on-timeout sandbox, with 'unsafe-eval' only at the worker level so the worker is the actual security boundary
• @turing-machine-js/machine and @post-machine-js/machine (peer-dependency relationship preserved)

License

GPL-3.0-or-later