WooCommerce uses a post type archive template to facilitate search results. This extension allows SearchWP to work with this default behavior by WooCommerce. This extension also incorporates other features of WooCommerce search such as Layered Navigation.
SearchWP – WooCommerce Integration Changelog – Version: 1.2.1
Changelog: SearchWP – WooCommerce Integration-v1.2.1
[Change] Intercepting WooCommerce JSON Product Search (added in 1.2) is now opt-in
[New]New filter: searchwp_woocommerce_hijack_json_search controls whether WooCommerce JSON Product Search requests are intercepted