.flat() issue on iOS 11

[tophergd]

Hello folks, I'm looking for a bit of guidance on this compatibility issue.

I have an error surfacing on Safari v11 (iOS) that is showing undefined is not a function on a usage of .flat() from within react-hook-form. This makes sense since .flat() is not supported until iOS safari v12.

I assumed that since react-hook-form <7 has support for IE11 then the usage of .flat() should be covered within that.

Maybe I'm missing something but any help would be much appreciated :)!

Thanks in advance!

[bluebill1049]

you want to include corejs for this fix?

[tophergd]

Thanks i've added a .flat() polyfill from core-js to sort this.

Also raised react-hook-form/documentation#508 to add this as a required polyfill in the docs.

thanks for the help 👍

[bluebill1049]

thanks a lot for that 🙏