Graphcache: read node by non-ID attribute

[oreqizer]

Hi 👋

I have an entity Program:

type Program {
  id: ID!
  slug: String # this is unique
  # ... other fields
}

I want to create a partial resolver for a query program(slug: String!): Program. How do I do it without knowing the id of the Program type?

Is something like this possible?

// ...
resolvers: {
    Query: {
      program: (parent, args: unknown, c) => {
        const vars = args as ProgramQueryVariables;

        console.log(vars);
        // scroll thru all `Program` fields, find the one with the proper slug...?
        console.log(c.inspectFields({ __typename: "Program" })); 
      },
    },
  },
// ...