Pinia throws obj.hasOwnProperty is not a function when combined with apollo

[kyurkchyan]

Reproduction

https://github.com/kyurkchyan/pinia-apollo-pnpm

Steps to reproduce the bug

1. Clone the repro repository
2. install the dependencies using pnpm i
3. run the project using pnpm dev
4. observe that the main page load fails with 500 internal server error obj.hasOwnProperty is not a function

Expected behavior

The app should load successfully

Actual behavior

App load fails with obj.hasOwnProperty is not a function error

Additional information

If you switch to the without-pinia branch and try the same steps everything works

You don't even have to use any pinia store for this issue to happen. As soon as you install the pinia nuxt plugin everything breaks.

Further, if you downgrade the version of pinia to 0.5.5 everything starts working again. You can check that out inside the working-pinia branch

I've tried all of the versions that were released after 0.5.5 none of them work.

[kyurkchyan]

Seems to be related with #2837

[posva]

Can you repro without Apollo? Where is an object with null as the prototype being passed to pinia?
#2867 Should fix this

[kyurkchyan]

@posva this only happens with the apollo project sample. I am not sure how else I can reproduce the issue

[octoper]

I have been able to reproduce it outside of Apollo project with the following

export const useWithNullObjectStore = defineStore('with-null-object', () => {
  return {
    text: ref(Object.create(null)),
  }
})

[posva]

Yes, and my goal is to understand why such an object in included in pinia state by Apollo.

[octoper]

I've investigated a bit and seems that's caused by how Apollo stores data in StoreWriter (ref) used in InMemoryCache, not sure exactly how everything works but it always produces a result that contains null objects.

[octoper]

Also found this issue in the apollo-client repo apollographql/apollo-client#12199

[foodticket-developer]

having the same issue on my end, also using "@pinia/nuxt": "0.9.0" and "pinia": "2.3.0" + "@nuxtjs/apollo": "5.0.0-alpha.14

this was not the case with "@pinia/nuxt": "0.5.5" and "pinia": "2.2.5"