Estimate Current Cart

Estimates the customer's current cart totals based on its current state and the selected calculation components.

This API provides a partial, component-based estimation of the cart and is intended for preview purposes (for example, showing partial estimated totals).

The estimation is controlled by boolean flags that indicate which components should be included (delivery costs, additional fees, taxes, gift cards). Components that aren't explicitly enabled are excluded from the calculation.

This isn't a full cart calculation.

Note that line item discounts are already pre-computed and applied to the current cart.