export declare function usePublicTravelCreditValidationMutation(): import("@tanstack/react-query").UseMutationResult<{
    data: {
        valid: boolean;
        reason: "expired" | "inactive" | "not_found" | "not_started" | "booking_mismatch" | "currency_mismatch" | "insufficient_balance" | null;
        travelCredit: {
            id: string;
            code: string;
            currency: string | null;
            amountCents: number | null;
            remainingAmountCents: number | null;
            expiresAt: string | null;
        } | null;
    };
}, Error, {
    code: string;
    bookingId?: string | null | undefined;
    currency?: string | null | undefined;
    amountCents?: number | null | undefined;
}, unknown>;