diff --git a/index.ts b/index.ts
index 49b804fd..dd2192bd 100644
--- a/index.ts
+++ b/index.ts
@@ -1,12 +1,10 @@
 import { record } from '@WebReplay/record'
 import { replay } from '@WebReplay/player'
-import { DataStore, SnapshotData } from '@WebReplay/snapshot'
+import { dbPromise, SnapshotData } from '@WebReplay/snapshot'
+
+async function start() {
+    const indexDB = await dbPromise
 
-new Promise(resolve => {
-    const indexDB = new DataStore('wr_db', 1, 'wr_data', () => {
-        resolve(indexDB)
-    })
-}).then((indexDB: DataStore) => {
     record({
         emitter: data => {
             indexDB.add(data)
@@ -20,4 +18,6 @@ new Promise(resolve => {
             })
         }
     }
-})
+}
+
+start()
diff --git a/packages/snapshot/src/store/data.ts b/packages/snapshot/src/store/data.ts
index b6da49c4..ce46589c 100644
--- a/packages/snapshot/src/store/data.ts
+++ b/packages/snapshot/src/store/data.ts
@@ -1,6 +1,6 @@
 import { SnapshotData } from '@WebReplay/snapshot'
 
-export class DataStore {
+export class IndexDBOperator {
     db: IDBDatabase
     DBName: string
     version: number
@@ -59,3 +59,9 @@ export class DataStore {
         }
     }
 }
+
+export const dbPromise: Promise<IndexDBOperator> = new Promise(resolve => {
+    const indexDB = new IndexDBOperator('wr_db', 1, 'wr_data', () => {
+        resolve(indexDB)
+    })
+})