javascript - 在 exec 的函数回调中使用 on.exit

Question

我有 javascript 代码，它运行 exec，类似于

exec('binary with argument', function(error, stdout,stderr)
{

// Calls a callback function if error is encountered
}

我还想使用该二进制文件的退出状态发送到上面的回调函数。一般的做法是

child.on("exit", function (code) {
  console.log("exit:", code)
})

如何将上述退出实用程序集成到 exec 错误处理程序中，以便捕获返回错误代码并将其传递给回调函数？

Answer 1

I need the exit status of the binary so i can return it back to user defined callback in the first snippet.

根据the docs ，您不需要监听 exit 事件来执行此操作:

The callback gets the arguments (error, stdout, stderr). On success, error will be null. On error, error will be an instance of Error and error.code will be the exit code of the child process, and error.signal will be set to the signal that terminated the process.