export interface MetricPoint {
    latencyP99: number;
    latencyP95: number;
    errorRate: number;
    throughput: number;
    timestamp: Date;
}
export interface BaselineSnapshot {
    latencyP99: number;
    latencyP95: number;
    errorRate: number;
    throughput: number;
    sampleCount: number;
}
export declare class BaselineCalculator {
    private readonly alpha;
    private snapshot;
    constructor(alpha?: number);
    update(point: MetricPoint): BaselineSnapshot;
    getSnapshot(): BaselineSnapshot;
    private mix;
}