Function finish

app/src/modules/hub.js:301–309

(ok)

    let done = false;
    const startedAt = (typeof performance !== 'undefined' && performance.now) ? performance.now() : Date.now();
    const finish = (ok) => {
      if (done) return;
      done = true;
      const endedAt = (typeof performance !== 'undefined' && performance.now) ? performance.now() : Date.now();
      resolve({
        ok,
        latencyMs: ok ? Math.max(1, Math.round(endedAt - startedAt)) : null,
      });
    };
    try {
      const ws = new WebSocket(server.wsUrl);
      const timer = setTimeout(() => { try { ws.close(); } catch {} finish(false); }, HUB_PROBE_TIMEOUT_MS);