/**
 * Authentication and authorization utilities for Ozon Seller API
 */
import type { ApiKey, ClientId } from "./types.js";
export interface AuthCredentials {
    readonly apiKey: ApiKey;
    readonly clientId: ClientId;
}
export declare class AuthManager {
    private readonly credentials;
    constructor(credentials: AuthCredentials);
    /**
     * Get authentication headers for API requests
     */
    getAuthHeaders(): Record<string, string>;
    /**
     * Validate API credentials format
     */
    validateCredentials(credentials: AuthCredentials): void;
    /**
     * Check if credentials are valid (basic format check)
     */
    isValid(): boolean;
    /**
     * Get masked credentials for logging (security)
     */
    getMaskedCredentials(): {
        clientId: string;
        apiKey: string;
    };
}
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