/**
 * Copyright (c) 2025 Mihajlo Stojanovski
 * All rights reserved.
 */
import { HistoryRecord, PatternOutput } from "../types";
import type { TestSummary } from "../report/interfaces";
/**
 * Pattern Analyzer
 * Enterprise principle: pure function, deterministic, capped.
 */
export declare class PatternAnalyzer {
    /**
     * Analyze historical test run records to detect patterns
     * Identifies flaky tests, recurring failures, performance regressions, and OS-specific issues
     *
     * @param records - Array of historical test run records (typically last 7 days)
     * @param currentTests - Optional current test results for enhanced context
     * @returns Pattern analysis output with detected issues (capped at 20 per category)
     */
    static analyze(records: HistoryRecord[], currentTests?: TestSummary[]): Promise<PatternOutput>;
    private static emptyOutput;
    private static aggregateTestStats;
    private static detectFlakyTests;
    private static hasAlternatingStatuses;
    private static detectRecurringFailures;
    private static detectRegressions;
    private static detectOSDiffs;
    private static getFailRate;
    private static hasSignificantOsDiff;
    private static getOsStatusLabel;
}
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