import type { ResearchConfig } from '../types/config.types.js';
import type { ErrorRepository } from '../db/repositories/error.repository.js';
import type { SolutionRepository } from '../db/repositories/solution.repository.js';
import type { ProjectRepository } from '../db/repositories/project.repository.js';
import type { InsightRepository } from '../db/repositories/insight.repository.js';
/**
 * Analyzes error frequency and solution success rate trends over time windows.
 */
export declare class TrendAnalyzer {
    private errorRepo;
    private solutionRepo;
    private projectRepo;
    private insightRepo;
    private config;
    private logger;
    constructor(errorRepo: ErrorRepository, solutionRepo: SolutionRepository, projectRepo: ProjectRepository, insightRepo: InsightRepository, config: ResearchConfig);
    analyze(): number;
    private analyzeErrorTrend;
    private analyzeSolutionTrend;
}
