/**
 * Context Optimizer - Context compression and optimization
 *
 * Reduces context size while preserving important information.
 */
/**
 * Optimization strategy
 */
export type OptimizationStrategy = 'truncate-old' | 'truncate-low-priority' | 'summarize' | 'deduplicate' | 'compress';
/**
 * Content item for optimization
 */
export interface OptimizableItem {
    id: string;
    content: string;
    priority: number;
    timestamp: number;
    tokens?: number;
    type?: string;
}
/**
 * Optimization result
 */
export interface OptimizationResult {
    original: OptimizableItem[];
    optimized: OptimizableItem[];
    removed: OptimizableItem[];
    tokensSaved: number;
    strategy: OptimizationStrategy;
}
/**
 * Optimizer configuration
 */
export interface ContextOptimizerConfig {
    /** Target token count */
    targetTokens: number;
    /** Strategy priority */
    strategies?: OptimizationStrategy[];
    /** Token ratio for estimation */
    tokenRatio?: number;
    /** Min priority to keep */
    minPriority?: number;
    /** Summarizer function */
    summarizer?: (items: OptimizableItem[]) => Promise<string>;
}
/**
 * ContextOptimizer - Optimize context size
 */
export declare class ContextOptimizer {
    readonly id: string;
    private config;
    constructor(config: ContextOptimizerConfig);
    /**
     * Optimize items to fit target
     */
    optimize(items: OptimizableItem[]): Promise<OptimizationResult>;
    /**
     * Apply optimization strategy
     */
    private applyStrategy;
    /**
     * Truncate to fit target
     */
    private truncateToFit;
    /**
     * Compress content (simple version)
     */
    private compressContent;
    /**
     * Estimate tokens
     */
    private estimateTokens;
}
/**
 * Create context optimizer
 */
export declare function createContextOptimizer(config: ContextOptimizerConfig): ContextOptimizer;
export default ContextOptimizer;