refactor: improve types of index.tsx
refactor: improve types of index.tsx

storybooks/storybook,storybooks/react-storybook,storybooks/storybook,kadirahq/react-storybook,kadirahq/react-storybook,storybooks/react-storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,storybooks/react-storybook,storybooks/storybook,storybooks/storybook,storybooks/react-storybook