export type MetricAttributeValue = string | number | boolean | null | undefined;
export type MetricAttributes = Record<string, MetricAttributeValue>;
export interface MetricInstrumentOptions {
    description?: string;
    unit?: string;
}
export declare function counter(name: string, value?: number, attributes?: MetricAttributes, options?: MetricInstrumentOptions): void;
export declare function histogram(name: string, value: number, attributes?: MetricAttributes, options?: MetricInstrumentOptions): void;
export declare function gauge(name: string, value: number, attributes?: MetricAttributes, options?: MetricInstrumentOptions): void;
export declare const metrics: {
    counter: typeof counter;
    histogram: typeof histogram;
    gauge: typeof gauge;
    __flushForTests(): Promise<void>;
    __resetForTests(): void;
};
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