Sends shutdown and waits until the daemon has actually fully exited — not just until the socket closes. The daemon's dispatch handler acks 'done' before its async cleanup (server.close / browser.close / process.exit) runs, so a naive "stop returned" signal leaves the daemon's socket / named-pipe handle still held. A fast follow-up daemon start would then race the dying daemon and hit EADDRINUSE — observed reliably on Windows where named-pipe handle release lags process exit by tens of milliseconds.

Reads the pid upfront (before sending shutdown — the daemon sync-unlinks the info file in its dispatch handler, so we can't read it after) and polls process.kill(pid, 0) until ESRCH. Bounded by SHUTDOWN_PID_WAIT_MS.

Returns true if a daemon was reached and asked to stop, false if no daemon was running.

import * as Client from './client.ts';

// Defined, not invoked: `qunitx daemon stop` — IPC plus a bounded pid-exit poll.
async function stopDaemon() {
  return await Client.shutdown(); // true if a daemon was reached, false when none was running
}