faststore-state-management

To manage FastStore SDK state, use the useCart, useSession, and useSearch hooks to coordinate client-side cart validation, session synchronization, and URL-synced facet filtering within a SearchProvider context. This keeps your storefront UI synced with backend data.

To prevent checkout during cart price validation, check the isValidating flag from the useCart hook before allowing checkout actions. This ensures the UI waits for live price validation to complete, keeping displayed totals accurate.

You should not use localStorage for session data in FastStore storefronts. Instead, delegate session synchronization to the useSession hook to properly handle locale and currency changes without manually persisting data.

To sync product search facets with the URL, use the useSearch hook within a proper SearchProvider context. This manages URL-synced facet filtering, ensuring search results update correctly when users apply filters.

FastStore state management for search requires a proper SearchProvider context to function. While useCart and useSession handle cart and locale independently, useSearch needs this provider to correctly manage URL-synced facet filtering.

If your FastStore cart drawer is not reflecting real-time price updates, ensure you are properly handling the isValidating state from the useCart hook. This flag tracks live price validation, allowing the UI to display accurate totals during updates.