/**
 * Base configuration class for SCANOSS SDK services.
 * Provides common proxy and network configuration settings for HTTP and gRPC connections.
 */
export declare abstract class BaseConfig {
    /** HTTPS proxy server URL */
    private _HTTPS_PROXY;
    /** HTTP proxy server URL */
    private _HTTP_PROXY;
    /** Comma-separated list of hosts to bypass proxy for */
    private _NO_PROXY;
    /** API URL for service connections */
    private _API_URL;
    /** gRPC proxy server URL
     * @deprecated since v0.20.1 - Use HTTP_PROXY or HTTPS_PROXY instead. Will be removed in v1
     * */
    private _GRPC_PROXY;
    /** Path to the CA certificate file for SSL/TLS connections */
    private _CA_CERT;
    /** Whether to ignore CA certificate errors */
    private _IGNORE_CERT_ERRORS?;
    /**
     * Creates a new BaseConfig instance.
     * @param config - Optional configuration object to copy settings from
     */
    constructor(config?: BaseConfig);
    /**
     * Returns the default SCANOSS API URL.
     * @returns The default API endpoint URL
     */
    static getDefaultURL(): string;
    /**
     * Returns the premium SCANOSS API URL.
     * @returns The premium API endpoint URL
     */
    static getPremiumURL(): string;
    /**
     * Resolves the appropriate API URL based on API key presence and current URL.
     * If an API key is provided and the current URL is the default, returns the premium
     * URL, otherwise returns the current URL.
     * @param apiKey - The API key (if any)
     * @param currentUrl - The current API URL
     * @returns The resolved API URL
     */
    /**
     * Resolves the appropriate scanner URL based on API key presence and current URL.
     * If an API key is provided and the current URL is the default, returns the premium
     * scanner URL, otherwise appends '/scan/direct' to the current URL.
     * @param apiKey - The API key (if any)
     * @param currentUrl - The current API URL
     * @returns The resolved scanner URL
     */
    protected resolveApiUrl(apiKey: string, currentUrl: string): string;
    /**
     * Sets the HTTPS proxy server URL.
     * @param value - HTTPS proxy URL
     */
    set HTTPS_PROXY(value: string);
    /**
     * Sets the HTTP proxy server URL.
     * @param value - HTTP proxy URL
     */
    set HTTP_PROXY(value: string);
    /**
     * Sets the comma-separated list of hosts to bypass proxy for.
     * @param value - NO_PROXY hosts list
     */
    set NO_PROXY(value: string);
    /**
     * Sets the API URL for service connections with validation
     * @param value - The API URL (must start with http:// or https://)
     * @throws {Error} When the URL is empty, missing http/https protocol, or has invalid format
     */
    set API_URL(value: string);
    /**
     * Sets the gRPC proxy server URL.
     * @param value - gRPC proxy URL
     * @deprecated since v0.20.1 - Use HTTP_PROXY or HTTPS_PROXY instead. Will be removed in v1
     */
    set GRPC_PROXY(value: string);
    /**
     * Sets the CA certificate file path for SSL/TLS connections.
     * @param caCertPath - Path to the CA certificate file
     * @throws {Error} When the certificate file does not exist or cannot be read
     */
    set CA_CERT(caCertPath: string);
    /**
     * Sets whether to ignore CA certificate errors.
     * @param value - True to ignore certificate errors, false otherwise
     */
    set IGNORE_CERT_ERRORS(value: boolean);
    /**
     * Gets the HTTPS proxy server URL.
     * @returns HTTPS proxy URL
     */
    get HTTPS_PROXY(): string;
    /**
     * Gets the HTTP proxy server URL.
     * @returns HTTP proxy URL
     */
    get HTTP_PROXY(): string;
    /**
     * Gets the comma-separated list of hosts to bypass proxy for.
     * @returns NO_PROXY hosts list
     */
    get NO_PROXY(): string;
    /**
     * Gets the API URL for service connections.
     * @returns API URL
     */
    get API_URL(): string;
    /**
     * Gets the gRPC proxy server URL.
     * @deprecated since v0.20.1 - Use HTTP_PROXY or HTTPS_PROXY instead. Will be removed in v1
     * @returns gRPC proxy URL
     */
    get GRPC_PROXY(): string;
    /**
     * Gets the path to the CA certificate file.
     * @returns CA certificate file path
     */
    get CA_CERT(): string;
    /**
     * Gets whether CA certificate errors should be ignored.
     * @returns True if certificate errors are ignored, false otherwise
     */
    get IGNORE_CERT_ERRORS(): boolean;
}