create 'enzyme/globals' environment add a few globals

[json2d]

removes no-undef errors/warnings from shallow, mount, and render after injecting globals for Enzyme

[giamir]

Hello @json2d,
Thanks for your contribution.
I will have a better look at the pull request over the weekend.
Are you actively using this package?

[json2d]

hey @giamir -- sort of, I'm using enzyme but I actually dont need the no-shallow in my usecase