node:child_process

Node's subprocess module, including fork() with IPC between Elide scripts.

node:child_process matches Node: spawn, exec, execFile, their Sync forms, fork, and ChildProcess.

fork() starts another Elide script; child.send() and process.send() exchange message events.
process.execPath runs Elide: execFileSync(process.execPath, ["--snippet", 'process.stdout.write("hi")']).
--allow-run and --deny-run apply under the sandbox.