Cache localstorage fix

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@ztimson/utils",
-	"version": "0.20.4",
+	"version": "0.20.7",
 	"description": "Utility library",
 	"author": "Zak Timson",
 	"license": "MIT",

src/cache.ts

@@ -25,7 +25,7 @@ export class Cache<K extends string | number | symbol, T> {
 	 * @param options
 	 */
 	constructor(public readonly key?: keyof T, public readonly options: CacheOptions = {}) {
-		if(options.storageKey && !options.storage && localStorage)
+		if(options.storageKey && !options.storage && typeof(Storage) !== 'undefined')
 			options.storage = localStorage;
 		if(options.storageKey && options.storage) {
 			const stored = options.storage.getItem(options.storageKey);