Some articles worth a read (and watch):
What about React.js error handling and exception tracking though? You’ll be pleased to know that Raygun and React get on well – so well in fact that you don’t even need to do anything special to get started!
And start firing those errors through!
If you’re doing some fancy ES6 transformation, remember to upload your source maps too and Raygun will produce super useful stack traces for you. Sign up for a free 14 day trial here.