/**
 * Derived Metrics
 *
 * Simple derived metrics calculations (rates, trends, etc.)
 */
import type { AgentMetrics, ToolMetrics } from './types';
/**
 * Calculate rate (operations per second)
 */
export declare function calculateRate(count: number, durationMs: number): number;
/**
 * Calculate error rate (percentage)
 */
export declare function calculateErrorRate(total: number, errors: number): number;
/**
 * Calculate success rate (percentage)
 */
export declare function calculateSuccessRate(total: number, successes: number): number;
/**
 * Agent metrics with derived rates
 */
export interface AgentDerivedMetrics {
    total: number;
    errors: number;
    successes: number;
    errorRate: number;
    successRate: number;
    averageDuration: number;
    requestsPerSecond: number;
    timeRangeMs: number;
}
/**
 * Calculate derived metrics for agents
 */
export declare function calculateAgentDerivedMetrics(agents: AgentMetrics[], timeRangeMs?: number): AgentDerivedMetrics;
/**
 * Tool metrics with derived rates
 */
export interface ToolDerivedMetrics {
    total: number;
    successes: number;
    failures: number;
    successRate: number;
    failureRate: number;
    averageDuration: number;
    requestsPerSecond: number;
    timeRangeMs: number;
}
/**
 * Calculate derived metrics for tools
 */
export declare function calculateToolDerivedMetrics(tools: ToolMetrics[], timeRangeMs?: number): ToolDerivedMetrics;
/**
 * Calculate trends (simple comparison between two time periods)
 */
export interface TrendMetrics {
    current: number;
    previous: number;
    change: number;
    changePercent: number;
}
/**
 * Calculate trend between two values
 */
export declare function calculateTrend(current: number, previous: number): TrendMetrics;
/**
 * Calculate error rate trend
 */
export declare function calculateErrorRateTrend(currentAgents: AgentMetrics[], previousAgents: AgentMetrics[]): TrendMetrics;
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