Fix: Unknown local iana (#3837)

rilldata · Jan 11, 2024 · da11ba2 · da11ba2 · github-actions · Jan 11, 2024
1 parent 26d6a1c
commit da11ba2
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Showing 2 changed files with 10 additions and 1 deletion.
diff --git a/web-common/src/features/dashboards/time-controls/TimeZoneSelector.svelte b/web-common/src/features/dashboards/time-controls/TimeZoneSelector.svelte
@@ -40,6 +40,11 @@
   // Add local and utc time zone to the top of the list
   $: availableTimeZones = [userLocalIANA, UTCIana, ...availableTimeZones];
 
+  // If localIANA is same as UTC, remove UTC from the list
+  $: if (userLocalIANA === UTCIana) {
+    availableTimeZones = availableTimeZones.slice(1);
+  }
+
   const onTimeZoneSelect = (timeZone: string) => {
     dispatch("select-time-zone", { timeZone });
   };

diff --git a/web-common/src/lib/time/timezone/index.ts b/web-common/src/lib/time/timezone/index.ts
@@ -16,7 +16,11 @@ export function removeZoneOffset(dt: Date, iana: string) {
 }
 
 export function getLocalIANA(): string {
-  return Intl.DateTimeFormat().resolvedOptions().timeZone;
+  const localIANA = Intl.DateTimeFormat().resolvedOptions().timeZone;
+  const zone = DateTime.local().setZone(localIANA);
+
+  if (zone.isValid) return localIANA;
+  else return getUTCIANA();
 }
 
 export function getUTCIANA(): string {