[RFR][v3] FormDataConsumer - add subscription prop to the FormDataConsumer

[natrim]

by default subscribe's to all changes like it is now
but user could change it by passing the subscription prop

[djhi]

Did you notice any performance issues ? Did you measure this change actually improve performances ?

[natrim]

i have big form (80 inputs, iterators, arrayinputs with tables) and get small lags spikes without this if writing to some input fast enough, so the speed up is only ~50ms, so most users will not notice any change

btw. to fully remove the lags i debounced the render of FormDataConsumer with HoC
but i have no idea if someone else would want that

[fzaninotto]

I think FormDataConsumer should be "works all the time" component for subscribing to the form. For more fined grained subscriptions, I think users should use useFormState or <FormSpy>. So I'm -1 on this one.

[natrim]

maybe i could add subscription prop to the FormDataConsumer
it will by default subscribe to all changes like it is now
but user could change it by passing the sub object?

[fzaninotto]

Good idea!

[natrim]

@fzaninotto changed it

[fzaninotto]

Thanks!