使用mocha的-debug-brk开关启用节点调试器的正确方法是什么?

I have some debugger statements in my module under test and want to run mocha with --debug-brk set and hit my breakpoint so that I can inspect the state of my module. Unfortunately, whenever I run mocha with this option, I end up with a blank cursor on the next line. I can enter text, but there's nothing that appears to be processing my commands (it certainly doesn't look like the node debugger):I have some debugger statements in my module un