export declare type MetricType = "COUNTER" | "TIMER";
export interface MetricId {
    name: string;
    tags: {
        [key: string]: string;
    };
    type: MetricType;
}
export declare type MetricField = "count" | "total" | "max" | "mean";
export declare class Measurement {
    private valueSupplier;
    field: MetricField;
    constructor(field: MetricField, valueSupplier: () => number);
    get value(): number;
}
export interface Metric {
    id: MetricId;
    measure(): Measurement[];
}
export declare function isMetricIdEqual(lid: MetricId, rid: MetricId): boolean;