Say goodbye to source maps and compilation delays. By treating types as whitespace, modern runtimes are unlocking a “no-build” TypeScript that keeps stack traces accurate and workflows clean.

Chrome, Edge, and Firefox are more bloated than ever, with AI are other features most of us don't want. This free tool is your ticket back to the good old days.

A simple prompt pulls up an interface that resembles an online test environment. You get explanations for wrong answers and detailed feedback at the end.