fix(time-series table): display null values in time-series table and sortable (#19024)

* fix: display null values in time-series table and sortable

* add unit test

* fix unit test

* Add sortNumericValues with different nan treatment

Co-authored-by: Jesse Yang <jesse.yang@airbnb.com>

superset-frontend/src/utils/sortNumericValues.ts

@@ -0,0 +1,52 @@
+/**
+ * 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 { JsonPrimitive } from '@superset-ui/core';
+
+export type NaNTreatment = 'alwaysLast' | 'asSmallest' | 'asLargest';
+
+/**
+ * Array.sort(...) comparator for potential numeric values with the ability to
+ * treat null and NaN as the smallest or largest values or always sort to bottom.
+ */
+export default function sortNumericValues(
+  valueA: JsonPrimitive,
+  valueB: JsonPrimitive,
+  {
+    descending = false,
+    nanTreatment = 'alwaysLast',
+  }: { descending?: boolean; nanTreatment?: NaNTreatment } = {},
+) {
+  let orderByIsNaN =
+    Number(valueA == null) - Number(valueB == null) ||
+    Number(Number.isNaN(Number(valueA))) - Number(Number.isNaN(Number(valueB)));
+
+  // if A is null or NaN and B is not, `orderByIsNaN` is 1,
+  // which will make A come after B in the sorted array,
+  // since we want to treat A as smallest number, we need to flip the sign
+  // when sorting in ascending order.
+  if (nanTreatment === 'asSmallest' && !descending) {
+    orderByIsNaN = -orderByIsNaN;
+  }
+  if (nanTreatment === 'asLargest' && descending) {
+    orderByIsNaN = -orderByIsNaN;
+  }
+  return (
+    orderByIsNaN || (Number(valueA) - Number(valueB)) * (descending ? -1 : 1)
+  );
+}