https://github.com/google/ios-webkit-debug-proxy

Please note that on the forums, there is a discussion continuing about ios-webkit-debug-proxy. Depending on your version of canary, if you're using it, it might take a lot of time and some students suggest trying Safari Dev Tools and point to links like this:

https://www.smashingmagazine.com/2014/09/testing-mobile-emulators-simulators-remote-debugging/2/