Bugfix: improved the way of checking if browser supports Intl.DateTimeFormat (#28086)

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

@@ -88,7 +88,7 @@ export function localTimeFormat(
   locale?: string | string[] | null,
   fallback?: string
 ): string {
-  if (!window.Intl) {
+  if (missingIntlDateTimeFormatSupport()) {
     return fallback ?? DEFAULT_SYSTEM_DATE_FORMAT;
   }
 
@@ -115,3 +115,7 @@ export function localTimeFormat(
 }
 
 export const systemDateFormats = new SystemDateFormatsState();
+
+const missingIntlDateTimeFormatSupport = (): boolean => {
+  return !('DateTimeFormat' in Intl) || !('formatToParts' in Intl.DateTimeFormat.prototype);
+};