/**
 * LLM Provider Error Classes
 * Structured error handling for all LLM providers
 */
import type { LLMError } from './types.js';
export declare class LLMProviderError extends Error implements LLMError {
    code: string;
    provider: string;
    retryable: boolean;
    statusCode?: number;
    rateLimited?: boolean;
    quotaExceeded?: boolean;
    constructor(message: string, code: string, provider: string, retryable?: boolean, statusCode?: number);
}
export declare class RateLimitError extends LLMProviderError {
    constructor(provider: string, message?: string);
}
export declare class QuotaExceededError extends LLMProviderError {
    constructor(provider: string, message?: string);
}
export declare class AuthenticationError extends LLMProviderError {
    constructor(provider: string, message?: string);
}
export declare class InvalidRequestError extends LLMProviderError {
    constructor(provider: string, message?: string);
}
export declare class ModelNotFoundError extends LLMProviderError {
    constructor(provider: string, model: string);
}
export declare class TimeoutError extends LLMProviderError {
    constructor(provider: string, message?: string);
}
export declare class NetworkError extends LLMProviderError {
    constructor(provider: string, message?: string);
}
export declare class ServerError extends LLMProviderError {
    constructor(provider: string, message?: string, statusCode?: number);
}
export declare class ContentFilterError extends LLMProviderError {
    constructor(provider: string, message?: string);
}
export declare class TokenLimitError extends LLMProviderError {
    constructor(provider: string, message?: string);
}
export declare class ConfigurationError extends LLMProviderError {
    constructor(provider: string, message: string);
}
export declare class CircuitBreakerOpenError extends LLMProviderError {
    retryAfterSec: number;
    consecutiveFailures: number;
    constructor(provider: string, retryAfterSec?: number, consecutiveFailures?: number);
}
export declare class ToolLoopLimitError extends LLMProviderError {
    constructor(provider: string, message?: string);
}
export declare class ToolLoopAbortedError extends LLMProviderError {
    constructor(provider: string, message?: string);
}
/**
 * Thrown when a provider's response envelope fails runtime schema validation.
 *
 * Indicates the upstream API silently changed shape - a field was renamed,
 * removed, or had its type changed. Non-retryable: retrying hits the same
 * broken shape. The factory treats this as fallback-eligible so traffic
 * routes to a healthy provider while the drift is investigated.
 */
export declare class SchemaDriftError extends LLMProviderError {
    path: string;
    expected: string;
    actual: string;
    constructor(provider: string, path: string, expected: string, actual: string);
}
/**
 * Error factory for creating provider-specific errors from HTTP responses
 */
/** Shape of error response bodies across all LLM providers. */
interface ErrorResponseBody {
    message?: string;
    error?: {
        message?: string;
        code?: string;
        type?: string;
        param?: string;
    };
}
export declare class LLMErrorFactory {
    static fromHttpResponse(provider: string, statusCode: number, responseBody?: ErrorResponseBody, message?: string): LLMProviderError;
    /**
     * Create error from fetch response
     */
    static fromFetchResponse(provider: string, response: Response): Promise<LLMProviderError>;
    /**
     * Check if error is retryable
     */
    static isRetryable(error: Error): boolean;
    /**
     * Check if error indicates rate limiting
     */
    static isRateLimited(error: Error): boolean;
    /**
     * Check if error indicates quota exceeded
     */
    static isQuotaExceeded(error: Error): boolean;
    /**
     * Get retry delay from rate limit error
     */
    static getRetryDelay(error: Error): number;
}
export {};
//# sourceMappingURL=errors.d.ts.map