chore: remove jsnext:main field (#453)
chore: remove jsnext:main field (#453)

* Remove jsnext:main field

`jsnext:main` was initiated by rollup and deprecated (just with an issue) in it in favour of module field. It's better to not provide dead stuff which others copy in their projects.

* chore: fix cypress

* chore: fix testing cypress

paypal/downshift,paypal/downshift