the way createNode work in gatsby-node.js

[dennis0324]

I tried to make my own library that automatically register custom type for graphql. I decompose code in src/schema and src/datastore in gatsby package. I looked up how to create each resolver and field in the createNode, but I couldn't find the code related to edges, groups, and nodes fields. Code related to filter, limit, skip, and distinct was found in addTypeToRootQuery, and distinct, group, max, min, and sum were found in the resolver.ts file. If possible, can you explain how it works for the 3 things you haven't found?