database add rmObject

src/database.ts

@@ -117,6 +117,17 @@ class Database {
         });
     }
 
+    public rmObject(db: IDBDatabase, storeName: string, key: IDBValidKey): Promise<void> {
+        return new Promise((resolve, reject) => {
+            const transaction = db.transaction(storeName, 'readwrite');
+            const store = transaction.objectStore(storeName);
+            const request = store.delete(key);
+
+            request.onerror = () => reject(request.error);
+            request.onsuccess = () => resolve(request.result);
+        });
+    }
+
     public getFirstMatchWithIndex<T>(db: IDBDatabase, storeName: string, indexName: string, lookup: string): Promise<T | null> {
         return new Promise((resolve, reject) => {
             const transaction = db.transaction(storeName, 'readonly');