Support fragments

[numso]

Defining fragments should be rather simple. We can add a new fragment macro and parse similarly to how we parse queries or mutations:

But we need to figure out some nice valid syntax for including a fragment in your query or in other fragments:

query "FetchUser" do
  user(id: "abc") do
   birthday
   # 👇  How do we define this??
    ...UserData
  end
end

fragment "UserData", on: "User" do
  id
  label
end

[numso]

Also need to support inline fragments:

query "GetRepo" do
  node(id: ^id) do
    # ??
    ...on Repository do
      name
      url
    end
  end
end