[CLNP-5591] Allow localCacheEnabled override through sdkInitParams (#1248)

Fixes https://sendbird.atlassian.net/browse/SBISSUE-17702
- Fix Object.assign order to allow proper parameter override
- Add test case to verify localCacheEnabled override

Author: AhyoungRyu

src/lib/hooks/useConnect/__test__/setupConnection.spec.ts

@@ -265,4 +265,27 @@ describe('useConnect/setupConnection/initSDK', () => {
     });
     expect(newSdk).toEqual(mockSdk);
   });
+  it('should override default localCacheEnabled when provided in sdkInitParams', async () => {
+    const setUpConnectionProps = generateSetUpConnectionParams();
+    const { appId } = setUpConnectionProps;
+    const sdkInitParams = {
+      localCacheEnabled: false,
+    };
+
+    const newSdk = initSDK({ appId, sdkInitParams });
+
+    // @ts-ignore
+    expect(require('@sendbird/chat').init).toBeCalledWith({
+      appId,
+      newInstance: false,
+      modules: [
+        // @ts-ignore
+        new (require('@sendbird/chat/groupChannel').GroupChannelModule)(),
+        // @ts-ignore
+        new (require('@sendbird/chat/openChannel').OpenChannelModule)(),
+      ],
+      localCacheEnabled: false,
+    });
+    expect(newSdk).toEqual(mockSdk);
+  });
 });

src/lib/hooks/useConnect/setupConnection.ts

@@ -173,12 +173,13 @@ export function initSDK({
   sdkInitParams?: SendbirdChatInitParams;
   customExtensionParams?: CustomExtensionParams;
 }) {
-  const params = Object.assign(sdkInitParams, {
+  // eslint-disable-next-line  prefer-object-spread -- not to break the existing types
+  const params = Object.assign({}, {
     appId,
     modules: [new GroupChannelModule(), new OpenChannelModule()],
     newInstance: isNewApp,
     localCacheEnabled: true,
-  });
+  }, sdkInitParams);
 
   if (customApiHost) params.customApiHost = customApiHost;
   if (customWebSocketHost) params.customWebSocketHost = customWebSocketHost;