/**
 * SLI Calculator
 *
 * Calculates Service Level Indicators from various data sources.
 * Supports ratio-based, threshold-based, and percentile-based SLIs.
 */
import type { SLI, SLIMeasurement, SLIAggregation, SLOStatus, BurnRate } from './types.js';
/**
 * Event data for ratio calculation
 */
export interface GoodBadEvents {
    good: number;
    bad: number;
}
/**
 * Time series data point
 */
export interface TimeSeriesPoint {
    timestamp: number;
    value: number;
    success?: boolean;
}
/**
 * SLI Calculator class
 */
export declare class SLICalculator {
    /**
     * Calculate SLI from good/bad events (ratio-based)
     */
    calculateFromEvents(sli: SLI, events: GoodBadEvents): SLIMeasurement;
    /**
     * Calculate SLI from time series data
     */
    calculateFromTimeSeries(sli: SLI, data: TimeSeriesPoint[], windowMs: number): SLIMeasurement;
    /**
     * Calculate SLI from QA360 test results
     */
    calculateFromTestResults(sli: SLI, results: {
        total: number;
        passed: number;
        failed: number;
        skipped: number;
    }): SLIMeasurement;
    /**
     * Calculate SLI from latency measurements
     */
    calculateLatency(sli: SLI, latencies: number[], percentile?: 'p50' | 'p95' | 'p99' | 'p99_9'): SLIMeasurement;
    /**
     * Calculate multiple SLIs from a single data source
     */
    calculateBatch(slis: SLI[], data: TimeSeriesPoint[] | GoodBadEvents | {
        total: number;
        passed: number;
        failed: number;
        skipped: number;
    }): SLIMeasurement[];
    /**
     * Calculate percentile value
     */
    private percentile;
    /**
     * Parse percentile string to number
     */
    private parsePercentile;
    /**
     * Create empty measurement
     */
    private emptyMeasurement;
    /**
     * Aggregate measurements over time
     */
    aggregateMeasurements(measurements: SLIMeasurement[], aggregation: SLIAggregation): SLIMeasurement;
    /**
     * Check if measurement meets threshold
     */
    meetsThreshold(measurement: SLIMeasurement, threshold: {
        operator: string;
        value: number;
    }): boolean;
    /**
     * Calculate burn rate for error budget
     */
    calculateBurnRate(measurements: SLIMeasurement[], target: number, windowMs: number): BurnRate;
    /**
     * Determine SLO status from current value and target
     */
    determineStatus(current: number, target: number, warningThreshold?: number): SLOStatus;
}
/**
 * Create an SLI calculator
 */
export declare function createSLICalculator(): SLICalculator;