Resolving comments

Signed-off-by: Xinrui Bai <xinruiba@amazon.com>

src/plugins/data_source_management/public/auth_registry/authentication_methods_registry.ts

@@ -9,7 +9,10 @@ import { EuiSuperSelectOption } from '@elastic/eui';
 export interface AuthenticationMethod {
   name: string;
   credentialSourceOption: EuiSuperSelectOption<string>;
-  credentialForm?: (state?: any, setState?: any) => React.JSX.Element;
+  credentialForm?: (
+    state: { [key: string]: any },
+    setState: React.Dispatch<React.SetStateAction<any>>
+  ) => React.JSX.Element;
   crendentialFormField?: { [key: string]: string };
 }
 

src/plugins/data_source_management/public/components/create_data_source_wizard/components/create_form/create_data_source_form.tsx

@@ -337,6 +337,8 @@ export class CreateDataSourceForm extends React.Component<
     if (authCredentialForm !== undefined) {
       return authCredentialForm(this.state, this.handleStateChange);
     }
+
+    return null;
   };
 
   /* Render methods */

src/plugins/data_source_management/public/components/edit_data_source/components/edit_form/edit_data_source_form.tsx

@@ -537,6 +537,8 @@ export class EditDataSourceForm extends React.Component<EditDataSourceProps, Edi
     if (authCredentialForm !== undefined) {
       return authCredentialForm(this.state, this.handleStateChange);
     }
+
+    return null;
   };
 
   /* Render methods */