Animations do not work on mobile safari

[p12n]

I wasn't able to get animations working on iOS in mobile safari.

This example fails with the the following error message for me:
http://animateplus.com/examples/stress-test/

[Error] SyntaxError: Unexpected token '...'. Expected a property name.
	promiseReactionJob

[Benjamin De Cock]

You need iOS 11.3 to be able to use the library (and view the examples) without transpiling it.