process.exitCode

• <integer> | <string> | <null> | <undefined> 退出码。对于字符串类型，仅允许整数字符串（例如，'1'）。默认值：undefined。

  ¥<integer> | <string> | <null> | <undefined> The exit code. For string type, only integer strings (e.g.,'1') are allowed. Default: undefined.

当进程正常退出或通过 process.exit() 退出而不指定代码时，将作为进程退出码的数字。

¥A number which will be the process exit code, when the process either exits gracefully, or is exited via process.exit() without specifying a code.

将代码指定为 process.exit(code) 将覆盖 process.exitCode 的任何先前设置。

¥Specifying a code to process.exit(code) will override any previous setting of process.exitCode.