Version

3.0.5

Reproduction link

https://jsfiddle.net/posva/km2qpwx7/

Steps to reproduce

in reactivity package, why baseHandlers has 4 kind but collectionHandlers only has 3 kind? there is no shallowReadonlyHandlers in collectionHandlers

What is expected?

I don't know why it is designed like this

What is actually happening?

I don't know why it is designed like this

Use chat.vuejs.org for questions please.