/**
 * Describes save-card action fields.
 */
export interface SaveCardOptions {
    /** The square-assigned ID of the customer linked to the saved card. */
    customerId: string;
    /** The id of the created card-on-file. */
    cardId?: string;
    /**
     * An optional user-defined reference ID that can be used to associate
     * this `Card` to another entity in an external system. For example, a customer
     * ID generated by a third-party system.
     */
    referenceId?: string | null;
}