Narrow typing the QueryKey type definition

[dominictwlee]

I was wondering whether having the string key as the first element of an array key is a personal preference, or something that should be enforced as a convention?

It seems all the examples in the docs enforce the idea that the string key should be used:

useQuery(['todos', status, page], ...)
useQuery(['todos', page, status], ...)
useQuery(['todos', undefined, page, status], ...)

If that's the case, would it be a good idea to narrow type the definition to something like:

export type QueryKey = string | [string, ...unknown[]]

[TkDodo]

keys can be string or any array that people want, but the type inference would need some love. unknown[] is actually way too broad :)