import type { TripCheckoutInput, TripCheckoutResult } from "../service.js";
import type { TripCheckoutDeps } from "./types.js";
/**
 * Orchestrate a trip checkout: price the trip's components into the collection
 * currency, create the finance payment session, optionally start the payment
 * provider, and return the customer-facing checkout link / bank-transfer
 * instructions.
 *
 * Finance (`createPaymentSession` + `buildPaymentLinkUrl`) is composed
 * directly. The deployment supplies FX quoting, the checkout base URL, and the
 * payment-provider start via `deps`.
 */
export declare function startTripCheckout(deps: TripCheckoutDeps, input: TripCheckoutInput): Promise<TripCheckoutResult>;