rigging-external.js

// Rigging.js

class Rigging {
  /* ... */
  cartUpdated = (newCart) => {
    this.dispatch(cartActions.cartUpdated(newCart));
  };
}


// templates/product.liquid

$('#AddToCartBtn').on('click', function() {
  ShopifyAPI.addItemToCart({{ product.handle }})
    .then(function(newCart) {
    
      // Call Rigging directly from a window-level event to dispatch data 
      // into the Redux store
      window.Rigging.cartUpdated(newCart);
    });
  });
});