h3.rb in h3-3.4.0

- old
+ new
@@ -15,25 +15,26 @@
 #
 # All public methods for the library are defined here.
 #
 # @see https://uber.github.io/h3/#/documentation/overview/introduction
 module H3
-  class << self
-    include GeoJSON
-    include Hierarchy
-    include Miscellaneous
-    include Indexing
-    include Inspection
-    include Regions
-    include Traversal
-    include UnidirectionalEdges
+  extend GeoJSON
+  extend Hierarchy
+  extend Miscellaneous
+  extend Indexing
+  extend Inspection
+  extend Regions
+  extend Traversal
+  extend UnidirectionalEdges
 
+  PREDICATES = %i[h3_indexes_neighbors h3_pentagon h3_res_class_3
+                  h3_unidirectional_edge_valid h3_valid].freeze
+  private_constant :PREDICATES
+
+  class << self
     # FFI's attach_function doesn't allow method names ending with a
     # question mark. This works around the issue by dynamically
     # renaming those methods afterwards.
-    PREDICATES = %i[h3_indexes_neighbors h3_pentagon h3_res_class_3
-                    h3_unidirectional_edge_valid h3_valid].freeze
-    private_constant :PREDICATES
     PREDICATES.each do |predicate|
       alias_method "#{predicate}?", predicate
       undef_method predicate
     end
   end