lib/cocina/models.rb in cocina-models-0.86.0 vs lib/cocina/models.rb in cocina-models-0.87.0

@@ -146,12 +146,16 @@
               end
       clazz.new(props, false, false)
     end
 
     def self.type_for(dyn)
-      dyn.with_indifferent_access.fetch('type')
-    rescue KeyError
-      raise ValidationError, 'Type field not found'
+      # Intentionally checking both string- and symbol-type keys in the hash via `#[]`
+      #  instead of `#with_indifferent_access` (and/or `#fetch`) in order to be more memory-efficient
+      object_type = dyn[:type] || dyn['type']
+
+      raise(ValidationError, 'Type field not found') unless object_type
+
+      object_type
     end
     private_class_method :type_for
 
     def self.druid_regex
       @druid_regex ||= begin