use object fromentries

Author: baileympearson

lib/drivers/node-mongodb-native/connection.js

@@ -381,21 +381,13 @@ NativeConnection.prototype._buildEncryptionSchemas = function() {
     }
   }
 
-  const schemaMap = Object.entries(csfleMappings).reduce(
-    (schemaMap, [namespace, schema]) => {
-      schemaMap[namespace] = schema._buildSchemaMap();
-      return schemaMap;
-    },
-    {}
-  );
-
-  const encryptedFieldsMap = Object.entries(qeMappings).reduce(
-    (encryptedFieldsMap, [namespace, schema]) => {
-      encryptedFieldsMap[namespace] = schema._buildEncryptedFields();
-      return encryptedFieldsMap;
-    },
-    {}
-  );
+  const schemaMap = Object.fromEntries(Object.entries(csfleMappings).map(
+    ([namespace, schema]) => ([namespace, schema._buildSchemaMap()])
+  ));
+
+  const encryptedFieldsMap = Object.fromEntries(Object.entries(qeMappings).map(
+    ([namespace, schema]) => ([namespace, schema._buildEncryptedFields()])
+  ));
 
   return {
     schemaMap, encryptedFieldsMap