chore: fix storage helper function and useguard return type (#124)

Author: temitopeadesoji

apps/vue-showcase/.eslintrc.js

@@ -87,5 +87,5 @@ module.exports = {
         },
       },
     },
-  ],
+  ]
 };

libs/vue-route-guard/src/lib/helpers.ts

@@ -38,7 +38,7 @@ export function getVueVersion(app: typeof Vue): number {
 export function isStorageAvailable(storage: StorageType): boolean {
   const storageValue = window[storage];
   if (
-    !!storageValue ||
+    !storageValue ||
     typeof storageValue !== 'object' ||
     typeof (storageValue as Storage).setItem !== 'function' ||
     typeof (storageValue as Storage).removeItem !== 'function'

libs/vue-route-guard/src/lib/index.ts

@@ -14,6 +14,6 @@ export function setupGuard(options: GuardConfig) {
   return new Guard(options, packageKey);
 }
 
-export function useGuard() {
-  return Vue.inject(packageKey);
+export function useGuard(): Guard {
+  return Vue.inject(packageKey) as Guard;
 }