事件：'spawn'

¥Event: 'spawn'

一旦子进程成功生成，就会触发 'spawn' 事件。如果子进程没有成功生成，则不会触发 'spawn' 事件，而是触发 'error' 事件。

¥The 'spawn' event is emitted once the child process has spawned successfully. If the child process does not spawn successfully, the 'spawn' event is not emitted and the 'error' event is emitted instead.

如果触发，则 'spawn' 事件发生在所有其他事件之前，并且发生在通过 stdout 或 stderr 接收任何数据之前。

¥If emitted, the 'spawn' event comes before all other events and before any data is received via stdout or stderr.

无论生成的进程中是否发生错误，都会触发 'spawn' 事件。例如，如果 bash some-command 成功生成，则 'spawn' 事件将触发，但 bash 可能无法生成 some-command。此警告在使用 { shell: true } 时也适用。

¥The 'spawn' event will fire regardless of whether an error occurs within the spawned process. For example, if bash some-command spawns successfully, the 'spawn' event will fire, though bash may fail to spawn some-command. This caveat also applies when using { shell: true }.