Question about QueryCache.config

[87xie]

I have a question regarding the config parameter in the QueryCache.prototype.constructor. In the current implementation, it accepts a config parameter. However, I have not found any instances of QueryCache in the codebase that are created with a config parameter.

class QueryCache extends Subscribable<QueryCacheListener> {
  #queries: QueryStore

  constructor(public config: QueryCacheConfig = {}) { // <-- here
    super()
    this.#queries = new Map<string, Query>()
  }
  // ...
}

Specifically, I'm interested in understanding if the config parameter is currently not in use, would it make sense to remove it, or is it reserved for potential future extensions?

Any clarification or examples of how this config parameter is meant to be used would be greatly appreciated!

[TkDodo]

it's for adding callbacks: https://tanstack.com/query/v5/docs/reference/QueryCache