/**
 * Knowledge Base - Stores and retrieves learned API patterns
 *
 * @deprecated Use LearningEngine instead. This class is kept for backward
 * compatibility only. LearningEngine provides all KnowledgeBase functionality
 * plus enhanced features like selector learning, content validation, and
 * cross-domain pattern transfer.
 *
 * Migration:
 * - LearningEngine.getPatterns() replaces KnowledgeBase.getPatterns()
 * - LearningEngine.getBypassablePatterns() replaces KnowledgeBase.getBypassablePatterns()
 * - LearningEngine.findPattern() replaces KnowledgeBase.findPattern()
 * - LearningEngine.learn() replaces KnowledgeBase.learn()
 * - LearningEngine.updateSuccessRate() replaces KnowledgeBase.updateSuccessRate()
 * - LearningEngine.clear() replaces KnowledgeBase.clear()
 * - LearningEngine.getStats() replaces KnowledgeBase.getStats()
 *
 * Uses PersistentStore for:
 * - Debounced writes (batches rapid learn() calls)
 * - Atomic writes (temp file + rename for corruption safety)
 */
import type { ApiPattern } from '../types/index.js';
/**
 * @deprecated Use LearningEngine instead
 */
export declare class KnowledgeBase {
    private entries;
    private store;
    private deprecationWarned;
    constructor(filePath?: string);
    initialize(): Promise<void>;
    /**
     * Learn API patterns from a domain
     */
    learn(domain: string, patterns: ApiPattern[]): void;
    /**
     * Get learned patterns for a domain
     */
    getPatterns(domain: string): ApiPattern[];
    /**
     * Get high-confidence patterns that can bypass browser
     */
    getBypassablePatterns(domain: string): ApiPattern[];
    /**
     * Find a pattern matching a URL
     */
    findPattern(url: string): ApiPattern | null;
    /**
     * Get knowledge base statistics
     */
    getStats(): {
        totalDomains: number;
        totalPatterns: number;
        bypassablePatterns: number;
        topDomains: Array<{
            domain: string;
            patterns: number;
            usageCount: number;
        }>;
    };
    /**
     * Update success rate for a pattern
     */
    updateSuccessRate(domain: string, endpoint: string, success: boolean): void;
    /**
     * Clear knowledge base
     */
    clear(): void;
    /**
     * Load knowledge base from disk
     */
    private load;
    /**
     * Save knowledge base to disk (debounced, atomic)
     */
    private save;
    /**
     * Flush any pending writes (for graceful shutdown)
     */
    flush(): Promise<void>;
}
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