import * as z from "zod/v3";
export type ThreeDSecure = {
    /**
     * The amount to be used for 3DS authentication. Optionally set this value to authenticate a greater amount than the transaction amount.
     */
    amount?: number | null | undefined;
};
/** @internal */
export type ThreeDSecure$Outbound = {
    amount?: number | null | undefined;
};
/** @internal */
export declare const ThreeDSecure$outboundSchema: z.ZodType<ThreeDSecure$Outbound, z.ZodTypeDef, ThreeDSecure>;
export declare function threeDSecureToJSON(threeDSecure: ThreeDSecure): string;
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