TimeSeries: fix time comparer not comparing date strings properly (#64622)

* fix time comparer not comparing times properly

* move isDateTime last as it's probably the most expensive check

packages/grafana-data/src/datetime/moment_wrapper.ts

@@ -89,7 +89,18 @@ export const getLocaleData = (): DateTimeLocale => {
   return moment.localeData();
 };
 
-export const isDateTime = (value: any): value is DateTime => {
+export const isDateTimeInput = (value: unknown): value is DateTimeInput => {
+  return (
+    value === null ||
+    typeof value === 'string' ||
+    typeof value === 'number' ||
+    value instanceof Date ||
+    (Array.isArray(value) && value.every((v) => typeof v === 'string' || typeof v === 'number')) ||
+    isDateTime(value)
+  );
+};
+
+export const isDateTime = (value: unknown): value is DateTime => {
   return moment.isMoment(value);
 };
 

packages/grafana-data/src/field/fieldComparers.ts

@@ -1,6 +1,6 @@
 import { isNumber } from 'lodash';
 
-import { dateTime, isDateTime } from '../datetime';
+import { dateTime, isDateTimeInput } from '../datetime';
 import { Field, FieldType } from '../types/dataFrame';
 import { Vector } from '../types/vector';
 
@@ -34,7 +34,7 @@ export const timeComparer = (a: unknown, b: unknown): number => {
     return numericComparer(a, b);
   }
 
-  if (isDateTime(a) && isDateTime(b)) {
+  if (isDateTimeInput(a) && isDateTimeInput(b)) {
     if (dateTime(a).isBefore(b)) {
       return -1;
     }