/**
 * Length of pairing code (6 digits)
 */
export declare const PAIRING_CODE_LENGTH = 6;
/**
 * Time-to-live for pairing codes in milliseconds (5 minutes)
 */
export declare const PAIRING_CODE_TTL_MS: number;
/**
 * Maximum number of validation attempts per code
 */
export declare const PAIRING_CODE_MAX_ATTEMPTS = 5;
/**
 * A pairing code entry
 */
export interface PairingCode {
    /** The 6-digit pairing code */
    code: string;
    /** When the code was created */
    createdAt: number;
    /** When the code expires */
    expiresAt: number;
    /** Whether the code has been consumed */
    consumed: boolean;
    /** Number of validation attempts made */
    attempts: number;
    /** IP address of the client that generated the code */
    clientIp: string;
    /** Session token generated when code is validated (if consumed) */
    sessionToken?: string;
}
/**
 * Result of validating a pairing code
 */
export type PairingCodeValidationResult = {
    kind: "success";
    sessionToken: string;
} | {
    kind: "invalid";
} | {
    kind: "expired";
} | {
    kind: "consumed";
} | {
    kind: "max-attempts";
};