Node.js ChildProcess subprocess.ref()用法及代碼示例

subprocess.ref()

在調用subprocess.unref() 之後調用subprocess.ref() 將恢複子進程已刪除的引用計數，迫使父進程等待子進程退出後再自行退出。

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

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

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