Cache returns objects with missing fields when cached type is a combination of an array and an object

[andoco]

I'm fetching an array of objects using an API client generated by the Typechain library which returns objects of this form:

export type FooStructOutput = [
  BigNumber,
  string,
] & { id: BigNumber; name: string };

The inital call to useQuery("foos", () => getFoos()); succeeds and returns an array of objects with all the correct fields.

A second call that returns the cached data returns an array with items that do not have the id or name fields. So it appears that the cache doesn't like the combination of an array and an object in a single type.

I've also tried querying the cache directly using queryClient.getQueryCache().find("foos") to verify that the cache is returning data with missing fields.

Is there any config setting or alternative cache that might support this data type?

Thanks.

[TkDodo]

I think you'd need to turn off structuralSharing, as this requires JSON compatible structures. Additionally, you could provide your own isDataEqual method

[andoco]

The structuralSharing setting worked. Thanks!