A JavaScript and Python browser sandbox that executes your code on every keystroke.

Live at www.daemon.live

Daemon uses an ephemeral web worker to asynchronously execute your JavaScript code and push the STDOUT/STDERR back to a console. Since web workers run on a second thread, you won't lock your browser by typing "while(true){}", etc., which is necessary in this context because it's surprisingly common to write an infinite loop before you finish typing :) The web worker uses Pyodide, a Python runtime compiled to WASM, to execute Python inside the webworker. It uses Monaco editor from VSCode with a React wrapper.

This is inspired by wanting to share my environment habit of configuring /nodemon/ and /nodemon --exec python3 ___/, etc, to have a ongoing console printout as I write.