doesn't work with node 8.2.1

[freddi301]

{ code: -32601,
  message: '\'Profiler.startTypeProfile\' wasn\'t found' }

[fhinkel]

I know 😞 Type profile hasn't landed in any Node release yet (Node master picks up V8 a few weeks later). You can either build Node yourself from here https://github.com/v8/node or download it from https://nodejs.org/download/v8-canary/ (You need to get a newer one than September 12 or so, all the way at the bottom).