Apollo Cache Field Resolver (WIP)

The aim of this simple resolver wrapper is to enable caching on a field level basis, as apposed to the Apollo Response Cache

Spec

Cache Key Variants

There should be some default(s) for how to generate cache keys, and perhaps the option for a custom function to generate it.

For example:

• node-id -> the node name + the node id.
• parent-field -> the parent node name + the field name + the parents id + field arguments.
• custom -> a function that returns a key given the resolved cache key type, the info object, the parent, and args.

node(definition) - A graphql type with the @key directive.

Issues/Prerequisites

1. For node-id how to resolve the id before the node is fetched.
2. For parent-field parent must be a node.

Possible solutions

1. For __resolveReference fields use @key directives fields argument. to get it from parent.
2. For any other case assume args contains the fields of the @key directive.

• Better solution for later could be recursively looking through the input ast to find a single field with type ID!, and/or finding a key id or containing id(respecting snake/camel etc. case)

2. For parent-field The parent may not exist, like in the case for a query.

TODO

• Prettify generated .d.ts
• Improve ID! resolving for node-id cache key variant
• Improve Docs
• Validate resulting node's id with resolved cache key