/**
 * Core Constants
 * Phase 4: Thresholds and configuration for widgets
 */
/**
 * Latency classification thresholds (ms)
 */
export declare const LATENCY_THRESHOLDS: {
    readonly LOW: 50;
    readonly MEDIUM: 150;
    readonly HIGH: number;
};
/**
 * Get latency class from milliseconds
 */
export declare function getLatencyClass(ms: number | "UNKNOWN"): "LOW" | "MEDIUM" | "HIGH" | "UNKNOWN";
/**
 * Sparkline history window (samples)
 */
export declare const SPARKLINE_HISTORY_SIZE = 60;
/**
 * Sparkline tick interval (ms) - approximate
 */
export declare const SPARKLINE_TICK_MS = 1000;
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