Lab
Practice
All execution happens in your browser. LearnPath servers never see your code. Runtimes load only when you open them.
Python
CPython in WebAssembly via Pyodide. First load downloads the runtime.
JavaScript
Runs in a sandboxed iframe. No Node, no network.
TypeScript
Transpiled with Sucrase, then the same sandbox.
HTML / CSS / JS
Live preview in an isolated iframe.
SQL
SQLite compiled to WebAssembly. Fresh seed database each run.