Browser REPL
Playground
The browser-only WASM subset of the Mutant runtime, running in an isolated worker with a five-second execution ceiling. Filesystem, network and process builtins are unavailable here by design.
Quick arithmetic smoke test for web REPL execution.
main.mut
Output
Ready.
Time —
Ops —
Mutations —
Execution graph
lex parse compile bytecode vm
The compile path the runtime docs describe. The browser REPL reports a single result rather than per-stage timings, so this traces the documented pipeline while a run is in flight — it is not a live profile of the VM.