/**
 * Helper classes and utilities for Skillsmith Metrics
 * @module @skillsmith/core/telemetry/metric-helpers
 */
import type { Counter, Gauge, Histogram, MetricLabels } from './metric-types.js';
/**
 * Dynamic import helper that bypasses TypeScript type checking (SMI-755)
 */
export declare function dynamicImport(moduleName: string): Promise<unknown>;
/**
 * Check if OpenTelemetry is available (SMI-755)
 */
export declare function checkOTelAvailability(): Promise<boolean>;
/**
 * No-op gauge implementation (used for gauges that track values locally)
 */
export declare class NoOpGauge implements Gauge {
    private values;
    set(value: number, labels?: MetricLabels): void;
    getValue(labels?: MetricLabels): number;
}
/**
 * In-memory counter for when OTEL is not available
 */
export declare class InMemoryCounter implements Counter {
    private values;
    add(value: number, labels?: MetricLabels): void;
    increment(labels?: MetricLabels): void;
    getValues(): Map<string, number>;
}
/**
 * In-memory histogram for when OTEL is not available
 */
export declare class InMemoryHistogram implements Histogram {
    private values;
    private labeledValues;
    record(value: number, labels?: MetricLabels): void;
    getStats(): {
        count: number;
        sum: number;
        mean: number;
        p50: number;
        p95: number;
        p99: number;
    };
}
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