Function installProcessExitHooks

yaml-flow-editor/vite.config.ts:355–420

()

  // Ensure that when the Vite dev server process exits (e.g. Ctrl+C),
  // we also best-effort stop any agent runs and dashboards it started.
  function installProcessExitHooks() {
    const projectRoot = getProjectRoot()
    const uiRunsDir = path.join(projectRoot, 'outputs', '_ui_runs')

    const cleanup = (signal: NodeJS.Signals | 'exit') => {
      // Stop all tracked runs (agent + dashboard processes).
      for (const run of runs.values()) {
        try {
          if (run.proc?.pid) {
            // Kill the whole process group for the agent.
            try {
              process.kill(-run.proc.pid, 'SIGTERM')
            } catch {
              try {
                run.proc.kill('SIGTERM')
              } catch {
                // ignore
              }
            }
          }
        } catch {
          // ignore
        }

        // Kill any dashboards we started and recorded a PID for.
        if (run.dashboardPid) {
          try {
            process.kill(run.dashboardPid, 'SIGTERM')
          } catch {
            // ignore (already gone)
          }
        }
      }

      // Also kill the "last UI dashboard" recorded in .dashboard_pid, if present.
      try {
        const pidFile = path.join(uiRunsDir, '.dashboard_pid')
        if (fs.existsSync(pidFile)) {
          const raw = fs.readFileSync(pidFile, 'utf8').trim()
          const pid = Number(raw)
          if (Number.isFinite(pid) && pid > 0) {
            try {
              process.kill(pid, 'SIGTERM')
            } catch {
              // ignore
            }
          }
        }
      } catch {
        // best-effort only
      }

      if (signal !== 'exit') {
        // Let default handlers run after cleanup.
        process.exit(0)
      }
    }