luxon -> date-fns

hwe/ts/util/formatTime.ts

@@ -0,0 +1,18 @@
+import { format, formatISO9075 } from 'date-fns';
+//const DATE_TIME_FORMAT = 'yyyy-MM-dd HH:mm:ss';
+const DATE_TIME_FORMAT_WITH_FRACTION = 'yyyy-MM-dd HH:mm:ss.SSS';
+
+export function formatTime(time: Date, withFraction?:boolean): string;
+export function formatTime(time: Date, format:string): string;
+
+export function formatTime(time: Date, withFractionOrFormat:string|boolean = false): string {
+    if (typeof withFractionOrFormat === "string") {
+        return format(time, withFractionOrFormat);
+    }
+    else if(withFractionOrFormat){
+        return format(time, DATE_TIME_FORMAT_WITH_FRACTION);
+    }
+    else {
+        return formatISO9075(time);
+    }
+}