subprocess.ref() | Node.js API 文档

新增于: v0.7.10

在调用 subprocess.unref() 之后再调用 subprocess.ref() 将会恢复子进程被移除的引用计数，强制父进程在自己退出之前等待子进程退出。

🌐 Calling subprocess.ref() after making a call to subprocess.unref() will restore the removed reference count for the child process, forcing the parent to wait for the child to exit before exiting itself.

const { spawn } = require('node:child_process');

const subprocess = spawn(process.argv[0], ['child_program.js'], {
  detached: true,
  stdio: 'ignore'
});

subprocess.unref();
subprocess.ref();