`InMemoryCacheConfig` interface has no `cacheRedirects` property

Intended outcome:

I am trying to use cache redirects as recommended in Apollo Client 3.0 documentation and I guess it should work as as in the docs. Or docs should change to match the actual implementation

Actual outcome:

The tsc complains that InMemoryCacheConfig has no cacheRedirects property.

How to reproduce the issue:

Install @apollo/client at version 3.0.0-beta.37, follow the documentation, see the error. Versions

    @apollo/client: ^3.0.0-beta.37 => 3.0.0-beta.37 
    apollo: ^2.23.0 => 2.23.0 
    apollo-link-error: ^1.1.12 => 1.1.12 

[benjamn]

Something like this?

new InMemoryCache({
  typePolicies: {
    Query: {
      fields: {
        user(existingDataFromCache: Reference | undefined, { args, toReference }) {
          return existingDataFromCache || toReference({
            __typename: "User",
            id: args.id,
          });
        },
      },
    },
  },
})

I think the piece you’re missing is options.toReference (and options.args perhaps).

You don’t necessarily have to pay any attention to existingDataFromCache, if this is a purely client-only field, meaning you won’t be writing any Query.user data from the server into the cache:

new InMemoryCache({
  typePolicies: {
    Query: {
      fields: {
        user(_, { args, toReference }) {
          return toReference({
            __typename: "User",
            id: args.id,
          });
        },
      },
    },
  },
})

[benjamn]

The cacheRedirects API has been removed in AC3, since its use cases are much better realized using field policies (and specifically read functions that return Reference objects): https://deploy-preview-5677--apollo-client-docs.netlify.com/docs/react/v3.0-beta/caching/cache-field-behavior/

Sorry for the misleading documentation! It’s still a work in progress (hence the “beta” tag), and we will definitely fix this before the final release.