bito-code-review[bot] commented on code in PR #24444:
URL: https://github.com/apache/superset/pull/24444#discussion_r3530304328


##########
superset-frontend/packages/superset-ui-core/src/number-format/factories/createLengthFormatter.ts:
##########
@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import NumberFormatter from '../NumberFormatter';
+
+export type LengthConvertType = 'm => km' | 'cm => km' | 'cm => m';
+
+export default function createLengthFormatter(
+  config: {
+    description?: string;
+    id?: string;
+    label?: string;
+    convertType?: LengthConvertType;
+  } = {},
+) {
+  const { description, id, label, convertType } = config;
+
+  return new NumberFormatter({
+    description,
+    formatFunc: (value: number) => {
+      if (convertType === 'm => km') {
+        return `${(value / 1000).toFixed(2)}km`;
+      }
+      if (convertType === 'cm => km') {
+        return `${(value / 100_000).toFixed(2)}km`;
+      }
+      if (convertType === 'cm => m') {
+        return `${(value / 100).toFixed(2)}m`;
+      }
+      return value.toString();
+    },
+    id: id ?? 'length_format',
+    label: label ?? `Length formatter`,
+  });
+}

Review Comment:
   <!-- Bito Reply -->
   The test coverage for `createLengthFormatter` has been addressed. The new 
test file covers the instance creation, default ID and label, all three 
conversion types, the passthrough behavior when no conversion type is 
specified, and custom configuration.



##########
superset-frontend/packages/superset-ui-core/src/number-format/index.ts:
##########
@@ -35,3 +35,4 @@ export { default as createMemoryFormatter } from 
'./factories/createMemoryFormat
 export { default as createSiAtMostNDigitFormatter } from 
'./factories/createSiAtMostNDigitFormatter';
 export { default as createSmartNumberFormatter } from 
'./factories/createSmartNumberFormatter';
 export { default as getSmallNumberFormatter } from './getSmallNumberFormatter';
+export { default as createLengthFormatter } from 
'./factories/createLengthFormatter';

Review Comment:
   <!-- Bito Reply -->
   The suggestions provided by the reviewer are intended to ensure code quality 
and consistency within the project. The first suggestion addresses a missing 
export in the index test, which is a standard practice to verify that all 
exported symbols are correctly defined and accessible. The second suggestion 
identifies a lack of unit tests for the new factory, which is important for 
maintaining test coverage and ensuring the reliability of new features. Whether 
to avoid such suggestions depends on your project's specific requirements for 
test coverage and module verification, but these are generally considered 
standard best practices.



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