Check TypeScript for backend (#64)

* Check Typescript

* Fix backend typescript issues

* Update

frontend/src/util-frontend.ts

@@ -10,7 +10,7 @@ import { POSITION } from "vue-toastification";
  *
  * Generated by Trelent
  */
-function getTimezoneOffset(timeZone) {
+function getTimezoneOffset(timeZone : string) {
     const now = new Date();
     const tzString = now.toLocaleString("en-US", {
         timeZone,
@@ -124,33 +124,6 @@ export function hostNameRegexPattern(mqtt = false) {
     return `${ipRegexPattern}|${hostNameRegexPattern}`;
 }
 
-/**
- * Get the tag color options
- * Shared between components
- * @param {any} self Component
- * @returns {object[]} Colour options
- */
-export function colorOptions(self) {
-    return [
-        { name: self.$t("Gray"),
-            color: "#4B5563" },
-        { name: self.$t("Red"),
-            color: "#DC2626" },
-        { name: self.$t("Orange"),
-            color: "#D97706" },
-        { name: self.$t("Green"),
-            color: "#059669" },
-        { name: self.$t("Blue"),
-            color: "#2563EB" },
-        { name: self.$t("Indigo"),
-            color: "#4F46E5" },
-        { name: self.$t("Purple"),
-            color: "#7C3AED" },
-        { name: self.$t("Pink"),
-            color: "#DB2777" },
-    ];
-}
-
 /**
  * Loads the toast timeout settings from storage.
  * @returns {object} The toast plugin options object.