fix(clear): dispatch event with old value

Akurganow · Jun 2, 2020 · 38e05ef · 38e05ef
1 parent c420a15
commit 38e05ef
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/index.ts b/src/index.ts
@@ -10,8 +10,9 @@ export default function createPersistedState(
 ): [<T>(key: string, initialValue: T) => UsePersistedState<T>, () => void] {
   const safeStorageKey = `persisted_state_hook:${storageKey}`
   const clear = (): void => {
+    const oldValue = storage.getItem(safeStorageKey)
     storage.removeItem(safeStorageKey)
-    window.dispatchEvent(new StorageEvent('storage', { key: safeStorageKey }))
+    window.dispatchEvent(new StorageEvent('storage', { key: safeStorageKey, oldValue }))
   }
 
   const usePersistedState = <T>(key: string, initialValue: T): UsePersistedState<T> => {