Remove localStorage warning.

src/storage.js

@@ -12,20 +12,9 @@ export interface AsyncStorage {
 export type Storage = Storage | AsyncStorage
 
 export const defaultStorage = () => {
-  try {
-    if (window && window.localStorage) {
-      return asyncStorage(window.localStorage)
-    }
-  } catch (e) {
-    if (!(e instanceof ReferenceError)) {
-      throw e
-    }
-  }
-  console.warn(
-    `'window.localStorage' unavailable.  ` +
-      `Creating a (not very useful) in-memory storage object as the default storage interface.`
-  )
-  return asyncStorage(memStorage())
+  const hasLocalStorage =
+    typeof window !== 'undefined' && 'localStorage' in window
+  return asyncStorage(hasLocalStorage ? window.localStorage : memStorage())
 }
 
 /**