事件：'message'

🌐 Event: 'message'

• message <Object> | <boolean> | <number> | <string> | <null> 一个解析后的 JSON 对象或可序列化的原始值。
• sendHandle <net.Server> | <net.Socket> 一个 net.Server 或 net.Socket 对象，或未定义。

如果 Node.js 进程是通过 IPC 通道启动的（参见 子进程 和 集群 文档），每当子进程接收到父进程使用 childprocess.send() 发送的消息时，就会触发 'message' 事件。

🌐 If the Node.js process is spawned with an IPC channel (see the Child Process and Cluster documentation), the 'message' event is emitted whenever a message sent by a parent process using childprocess.send() is received by the child process.

消息会经过序列化和解析。最终得到的消息可能与最初发送的内容不完全相同。

🌐 The message goes through serialization and parsing. The resulting message might not be the same as what is originally sent.

如果在生成进程时将 serialization 选项设置为 advanced，message 参数可能包含 JSON 无法表示的数据。有关更多详细信息，请参见 child_process 的高级序列化。

🌐 If the serialization option was set to advanced used when spawning the process, the message argument can contain data that JSON is not able to represent. See Advanced serialization for child_process for more details.