import type { LanguageModelMiddleware } from "ai";
import type { NeuroLinkMiddleware, MiddlewareConfig, MiddlewareContext, MiddlewareRegistrationOptions, MiddlewareExecutionResult } from "../types/index.js";
/**
 * Manages the registration, configuration, and execution of middleware for a single factory instance.
 */
export declare class MiddlewareRegistry {
    private middleware;
    private globalConfigs;
    private executionStats;
    /**
     * Register a middleware
     */
    register(middleware: NeuroLinkMiddleware, options?: MiddlewareRegistrationOptions): void;
    /**
     * Unregister a middleware
     */
    unregister(middlewareId: string): boolean;
    /**
     * Get a registered middleware
     */
    get(middlewareId: string): NeuroLinkMiddleware | undefined;
    /**
     * List all registered middleware
     */
    list(): NeuroLinkMiddleware[];
    /**
     * Get middleware IDs sorted by priority
     */
    getSortedIds(): string[];
    /**
     * Build middleware chain based on configuration
     */
    buildChain(context: MiddlewareContext, config?: Record<string, MiddlewareConfig>): LanguageModelMiddleware[];
    /**
     * Determine if middleware should be applied based on conditions
     */
    private shouldApplyMiddleware;
    /**
     * Configure middleware with runtime configuration
     */
    private configureMiddleware;
    /**
     * Record middleware execution statistics
     */
    private recordExecution;
    /**
     * Get execution statistics for a middleware
     */
    getExecutionStats(middlewareId: string): MiddlewareExecutionResult[];
    /**
     * Get aggregated statistics for all middleware
     */
    getAggregatedStats(): Record<string, {
        totalExecutions: number;
        successfulExecutions: number;
        failedExecutions: number;
        averageExecutionTime: number;
        lastExecutionTime: number;
    }>;
    /**
     * Clear execution statistics
     */
    clearStats(middlewareId?: string): void;
    /**
     * Check if a middleware is registered
     */
    has(middlewareId: string): boolean;
    /**
     * Get the number of registered middleware
     */
    size(): number;
    /**
     * Clear all registered middleware
     */
    clear(): void;
}