export declare enum TrendDirection {
    Up = "up",
    Down = "down"
}
export interface MetricTrend {
    value: number;
    direction: TrendDirection;
}
export interface MetricCalculationResult {
    value: string;
    trend: MetricTrend;
}
/**
 * Calculate queries per second metrics from chart data
 */
export declare const calculateQueriesPerSecond: (data?: (number | null)[]) => MetricCalculationResult;
/**
 * Calculate latency metrics from chart data
 */
export declare const calculateLatency: (data?: (number | null)[]) => MetricCalculationResult;
/**
 * Format trend value for display
 */
export declare const formatTrendValue: (val: number) => string;