/**
 * Shared HTTP client utilities for daemon health checks.
 * Provides typed error handling, retry logic, and debug logging.
 */
/**
 * Error codes for HTTP operations.
 */
export type HttpErrorCode = 'NETWORK_ERROR' | 'TIMEOUT' | 'NON_200_STATUS' | 'INVALID_RESPONSE';
/**
 * HTTP error details.
 */
export interface HttpError {
    code: HttpErrorCode;
    message: string;
    details?: unknown;
    statusCode?: number;
}
/**
 * Result type for HTTP operations (discriminated union).
 */
export type HttpResult<T> = {
    ok: true;
    data: T;
    statusCode: number;
} | {
    ok: false;
    error: HttpError;
};
/**
 * Health check response schema.
 */
export interface HealthCheckResponse {
    status: string;
    sessions: number;
    uptime: number;
    pid: number;
    sessionTimeoutMs?: number;
    version?: string;
    name?: string;
}
/**
 * HTTP client configuration options.
 */
export interface HttpClientOptions {
    /** Request timeout in milliseconds (default: 3000) */
    timeout?: number;
    /** Number of retry attempts (default: 0) */
    retries?: number;
    /** Delay between retries in milliseconds (default: 500) */
    retryDelay?: number;
    /** Error codes that trigger retries (default: ['NETWORK_ERROR', 'TIMEOUT']) */
    retryOn?: HttpErrorCode[];
    /** Optional logger function for debugging */
    logger?: (msg: string) => void;
}
/**
 * Check daemon health with retry logic and typed error handling.
 *
 * @param host - Daemon host address
 * @param port - Daemon port number
 * @param options - HTTP client options
 * @returns Promise resolving to HttpResult with health data or error details
 */
export declare function checkDaemonHealth(host: string, port: number, options?: HttpClientOptions): Promise<HttpResult<HealthCheckResponse>>;
/**
 * Simple boolean wrapper for daemon health check (backwards compatible).
 *
 * @param host - Daemon host address
 * @param port - Daemon port number
 * @param options - HTTP client options
 * @returns Promise resolving to true if daemon is healthy, false otherwise
 */
export declare function isDaemonHealthy(host: string, port: number, options?: HttpClientOptions): Promise<boolean>;
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