v3.5.5 breaking change for dependent packages
From what I can tell Fragment.Slice was deprecated in v3.5, and then removed in v3.5.5 - but this wasn't explained anywhere
Deprecated: https://github.com/prismicio/javascript-kit/commit/6eb1085eb0f093a12fd8bffacf77931529a54c2e#diff-be2894dd4a0851ec3d80006f583c2936L994
Removed: https://github.com/prismicio/javascript-kit/commit/f228f91aec124789b96d10e86c2659d2bb085b1b#diff-be2894dd4a0851ec3d80006f583c2936L999
This has broken at least one dependent package (see: https://github.com/ds300/prismic-react)
Obviously it's that package's responsibility to deal with it, but maybe you could have left it in until your next major release? Especially since after v3.5 it was just a helper function.
Any chance of putting it back in until v4?