Empty list in GrapQL schema- should be null or []?

Question

I have Post type with tags field that is array of strings, but some posts do not have tags. Is there any convention how to handle 0 items (tags in my example) - from backend should I return null in query or empty array []? If this is developer preference and there is no standard for that, what is used more often in all graphql projects?

Answer 1

It's better to use an empty list ([]): https://github.com/nuwave/lighthouse/issues/1980#issuecomment-970189037