Specifying document breaks the options

[Kadeluxe]

TypeError: Cannot set property ancestorOrigins of [object Location] which has only a getter

You shouldn't do deepAssign on settings object like that. Your deepAssign function tries to assign defaults to the window.document (???) and that completely crashes the library because browsers will not allow that.
I don't know why it throws such error only for my setup and not for other users and I have no time for proper investigations but I think it was worth reporting.

[Kadeluxe]

Actually the reason why is that your test site and probably other users don't set document option in settings, skipping that deepAssign for that property.

[simonwep]

I see, makes sense... Must have missed that when adding support for defining document :) I'll fix it this weekend or so... I'll probably remove deepAssign altogether and just use spread for each option, it's been a while.