/**
 * Outward-facing MFA Device Response DTO
 *
 * This DTO is used for all API responses that return device information.
 * It maps internal `isPrimary` to external `isPreferred` to avoid exposing
 * internal database field names.
 *
 * @example
 * ```typescript
 * const device: MFADeviceResponseDTO = {
 *   id: 1,
 *   type: 'totp',
 *   name: 'My Phone',
 *   isPreferred: true,
 *   isActive: true,
 *   createdAt: new Date()
 * };
 * ```
 */
import { MFADeviceMethod } from '../enums/mfa-method.enum';
import { IMFADevice } from '../interfaces/entities.interface';
/**
 * Outward-facing MFA device information
 *
 * Note: Uses `isPreferred` instead of internal `isPrimary` field
 */
export declare class MFADeviceResponseDTO {
    /**
     * Unique device identifier
     */
    id: number;
    /**
     * MFA method type (totp, sms, email, passkey)
     */
    type: MFADeviceMethod;
    /**
     * Device name (user-assigned)
     */
    name: string;
    /**
     * Whether this is the preferred device for this method
     * Maps from internal `isPrimary` field
     */
    isPreferred: boolean;
    /**
     * Whether device is currently active
     */
    isActive: boolean;
    /**
     * Device creation timestamp
     */
    createdAt: Date;
    /**
     * Convert internal device entity to outward-facing DTO
     *
     * @param device - Internal device entity
     * @returns Outward-facing device DTO
     */
    static fromEntity(device: IMFADevice): MFADeviceResponseDTO;
    /**
     * Convert array of internal device entities to outward-facing DTOs
     *
     * @param devices - Array of internal device entities
     * @returns Array of outward-facing device DTOs
     */
    static fromEntities(devices: IMFADevice[]): MFADeviceResponseDTO[];
}
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