Unable to use with PhantomJS

[markgillnz]

I am using enzyme-react-intl to test react-intl components however it fails when used in combination with karma and PhantomJS 2.1.1

11 04 2018 15:28:58.283:INFO [framework.detect-browsers]: Detecting browsers is disabled. The browsers of the browsers array are used.
11 04 2018 15:29:05.248:INFO [framework.browserify]: bundle built
11 04 2018 15:29:05.297:INFO [karma]: Karma v0.13.22 server started at http://localhost:52917/
11 04 2018 15:29:05.301:INFO [launcher]: Starting browser PhantomJS
11 04 2018 15:29:06.275:INFO [PhantomJS 2.1.1 (Mac OS X 0.0.0)]: Connected on socket u9NSMuoySmC8soxnAAAA with id 69589497
PhantomJS 2.1.1 (Mac OS X 0.0.0) ERROR
SyntaxError: Use of reserved word 'let' in strict mode
at /var/folders/dj/s8jy53zn6sg7pvqf24g6pjgsp7527r/T/c41fd46be3a670f19e1228fa90cec6a0.browserify:12166 <- node_modules/enzyme-react-intl/lib/enzyme-react-intl.js:1:0

Can you suggest what I can do to get this working?

[joetidee]

Are you using the latest version of enzyme-react-int ?

[markgillnz]

Yes, I installed it yesterday

[joetidee]

Found this - does this help?
chaijs/chai-as-promised#231

[markgillnz]

I have tried using karma-babel-preprocessor to compile it but to no avail.
I will try with an updated version of karma later to see if it helps though