feat: datetimes with timezones

src/utils/datetime.ts

@@ -0,0 +1,16 @@
+import { formatInTimeZone } from "date-fns-tz";
+
+export const utcDateToLocal = (datetime: string | Date) => {
+    const userTZ = Intl.DateTimeFormat().resolvedOptions().timeZone;
+    const localTime = formatInTimeZone(datetime, userTZ, "yyyy-MM-dd HH:mm:ss");
+    return new Date(localTime);
+};
+
+export const localDateTimeToString = (datetime: string | Date) => {
+    const date = new Date(datetime);
+    return date.toLocaleString("ru").substring(0, 17);
+};
+
+export const utcDateTimeToLocalString = (datetime: string | Date) => {
+    return localDateTimeToString(utcDateToLocal(datetime));
+};