/**
 * Enterprise Exception Hierarchy for Lemma AI Gateway
 */
export declare enum LemmaErrorCode {
    CONFIG_INVALID = "LEMMA_CONFIG_INVALID",
    CONNECTION_FAILED = "LEMMA_CONNECTION_FAILED",
    CACHE_OPERATION_FAILED = "LEMMA_CACHE_OPERATION_FAILED",
    SECURITY_BREACH = "LEMMA_SECURITY_BREACH",
    ROUTING_TIMEOUT = "LEMMA_ROUTING_TIMEOUT",
    UNEXPECTED = "LEMMA_UNEXPECTED"
}
/**
 * Base enterprise exception for all custom Lemma errors.
 * Includes explicit error code, ISO timestamp, context trace details, and inner error wrapping.
 */
export declare class LemmaError extends Error {
    readonly code: LemmaErrorCode;
    readonly timestamp: string;
    readonly context?: Record<string, any>;
    constructor(message: string, code: LemmaErrorCode, context?: Record<string, any>, cause?: Error | any);
}
/**
 * Thrown when environment configurations, ports, or similarity parameters are invalid.
 */
export declare class ConfigurationError extends LemmaError {
    constructor(message: string, context?: Record<string, any>);
}
/**
 * Thrown when connectivity fails to critical database or upstream models (ChromaDB, Ollama, OpenAI, Anthropic).
 */
export declare class ConnectionError extends LemmaError {
    constructor(message: string, provider: string, cause?: Error | any);
}
/**
 * Thrown when caching engines encounter vector insertion or semantic search failures.
 */
export declare class CacheError extends LemmaError {
    constructor(message: string, taskId?: string, cause?: Error | any);
}
/**
 * Thrown when sanitization blocks messages, origin limits trigger, or key verification fails.
 */
export declare class SecurityError extends LemmaError {
    constructor(message: string, context?: Record<string, any>);
}
/**
 * Thrown when agent discovery fails or task routers timeout due to missing capabilities.
 */
export declare class RoutingError extends LemmaError {
    constructor(message: string, taskId: string, context?: Record<string, any>);
}
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