Function spawnReplacementProcess

index.js:422–449

({ reason, args, logPath })

// Users who insist can opt back in with EVOLVER_SUICIDE_WINDOWS=true (and accept
// the popups).
function spawnReplacementProcess({ reason, args, logPath }) {
  const isWindows = process.platform === 'win32';
  const allowOnWindows = parseBoolEnv(process.env.EVOLVER_SUICIDE_WINDOWS, false);
  if (isWindows && !allowOnWindows) {
    console.log(
      '[Daemon] Skipping in-process respawn on Windows (' + reason + '). ' +
      'Native Node spawn(detached, windowsHide) opens a cmd popup on every restart (Issue #528). ' +
      'Set EVOLVER_SUICIDE_WINDOWS=true to opt back in. ' +
      'Recommended: run evolver under an external supervisor (NSSM, pm2-windows, etc.) so it restarts on exit.'
    );
    return { spawned: false, reason: 'windows_default_skip' };
  }
  try {
    const logFd = fs.openSync(logPath, 'a');
    const spawnOpts = {
      detached: true,
      stdio: ['ignore', logFd, logFd],
      env: process.env,
      windowsHide: true,
    };
    const child = spawn(process.execPath, [__filename, ...args], spawnOpts);
    child.unref();
    return { spawned: true };
  } catch (e) {
    console.error('[Daemon] Spawn-replacement failed (' + reason + '): ' + (e && e.message || e));
    return { spawned: false, reason: 'spawn_error', error: e };
  }
}

// Atomic write of the cycle_progress.json file. Wrapper polls this file every
// 60s; if updated_at goes stale beyond EVOLVE_INNER_STUCK_TIMEOUT_SEC the