module GraphQL::Relay::EdgeType

def self.create_type(wrapped_type, name: nil, &block)
  GraphQL::ObjectType.define do
    name("#{wrapped_type.name}Edge")
    description "An edge in a connection."
    field :node, wrapped_type, "The item at the end of the edge."
    field :cursor, !types.String, "A cursor for use in pagination."
    block && instance_eval(&block)
  end
end