refactor: move CacheStorage into a module

src/App.tsx

@@ -14,6 +14,7 @@ import { EspruinoComms } from './services/Espruino/Comms';
 import { useEspruinoDeviceInfoStore } from './services/Espruino/stores/EspruinoDevice';
 import { useEffect } from 'react';
 import { useGadgetBridgeConnector } from './services/GadgetbridgeConnector';
+import { localStorageProvider } from './services/CacheStorage';
 
 const router = createHashRouter(
   createRoutesFromElements(
@@ -65,51 +66,3 @@ function Entry() {
 
 export default Entry
 
-interface CacheStorage {
-  caches: [string, any][];
-  created: number;
-}
-const CACHE_KEY = "app-cache"
-const ONE_DAY = (
-  1 // ms
-  * 1000 // ss
-  * 60 // mm
-  * 60 // hh
-  * 24
-)
-const DEFAULT_CACHE = JSON.stringify({
-  caches: [] as [string, any][],
-  created: 0,
-});
-function localStorageProvider() {
-  const working = {
-    map: new Map<string, any>(),
-    created: Date.now(),
-  };
-
-  try {
-    // When initializing, we restore the data from `localStorage` into a map.
-    const { caches, created } = JSON.parse(localStorage.getItem(CACHE_KEY) || DEFAULT_CACHE) as CacheStorage;
-    if (Date.now() - created < ONE_DAY) {
-      // restore if cache was created in less than a day
-      working.map = new Map(caches);
-      working.created = created;
-    } else {
-      // using empty cache map
-    }
-  } catch (e) {
-    // using empty cache map
-  }
-
-  // Before unloading the app, we write back all the data into `localStorage`.
-  window.addEventListener('beforeunload', () => {
-    const cacheStorage: CacheStorage = {
-      caches: [...working.map.entries()],
-      created: working.created,
-    };
-    localStorage.setItem(CACHE_KEY, JSON.stringify(cacheStorage))
-  })
-
-  // We still use the map for write & read for performance.
-  return working.map;
-}

src/services/CacheStorage/index.ts

@@ -0,0 +1,51 @@
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+type CacheValue = any;
+
+interface CacheStorage {
+  caches: [string, CacheValue][];
+  created: number;
+}
+const CACHE_KEY = "app-cache"
+const ONE_DAY = (
+  1 // ms
+  * 1000 // ss
+  * 60 // mm
+  * 60 // hh
+  * 24
+)
+const DEFAULT_CACHE = JSON.stringify({
+  caches: [] as [string, CacheValue][],
+  created: 0,
+});
+export function localStorageProvider() {
+  const working = {
+    map: new Map<string, CacheValue>(),
+    created: Date.now(),
+  };
+
+  try {
+    // When initializing, we restore the data from `localStorage` into a map.
+    const { caches, created } = JSON.parse(localStorage.getItem(CACHE_KEY) || DEFAULT_CACHE) as CacheStorage;
+    if (Date.now() - created < ONE_DAY) {
+      // restore if cache was created in less than a day
+      working.map = new Map(caches);
+      working.created = created;
+    } else {
+      // using empty cache map
+    }
+  } catch (e) {
+    // using empty cache map
+  }
+
+  // Before unloading the app, we write back all the data into `localStorage`.
+  window.addEventListener('beforeunload', () => {
+    const cacheStorage: CacheStorage = {
+      caches: [...working.map.entries()],
+      created: working.created,
+    };
+    localStorage.setItem(CACHE_KEY, JSON.stringify(cacheStorage))
+  })
+
+  // We still use the map for write & read for performance.
+  return working.map;
+}