add nova

nova/resources/js/mixins/InteractsWithDates.js

@@ -0,0 +1,21 @@
+import { hourCycle } from '@/util'
+
+export default {
+  computed: {
+    /**
+     * Get the user's local timezone.
+     */
+    userTimezone() {
+      return Nova.config('userTimezone') || Nova.config('timezone')
+    },
+
+    /**
+     * Determine if the user is used to 12 hour time.
+     */
+    usesTwelveHourTime() {
+      let locale = new Intl.DateTimeFormat().resolvedOptions().locale
+
+      return hourCycle(locale) === 12
+    },
+  },
+}