events.errorMonitor
此符号应用于安装仅监视 'error'
事件的监听器。
在调用常规 'error'
监听器之前调用使用此符号安装的监听器。
一旦触发 'error'
事件,则使用此符号安装监听器不会改变行为。
因此,如果没有安装常规的 'error'
监听器,则进程仍然会崩溃。
This symbol shall be used to install a listener for only monitoring 'error'
events. Listeners installed using this symbol are called before the regular
'error'
listeners are called.
Installing a listener using this symbol does not change the behavior once an
'error'
event is emitted. Therefore, the process will still crash if no
regular 'error'
listener is installed.