- fn < Function> | < null>
The process.setUncaughtExceptionCaptureCallback() function sets a function that will be invoked when an uncaught exception occurs, which will receive the exception value itself as its first argument.
If such a function is set, the ‘uncaughtException’ event will not be emitted. If –abort-on-uncaught-exception was passed from the command line or set through v8.setFlagsFromString(), the process will not abort.
To unset the capture function, process.setUncaughtExceptionCaptureCallback(null) may be used. Calling this method with a non-null argument while another capture function is set will throw an error.
Using this function is mutually exclusive with using the deprecated domain built-in module.
更多内容请参考：Node.js process 进程，或者通过 点击对应菜单 进行查看；