export type CustomMetricBase = {
    timestamp: number;
    name: string;
    value: string | number;
    description: string;
    unit: MetricUnit;
    labels?: MetricLabel;
    type: MetricType;
    status?: string;
    result?: string;
    buckets?: (number | string)[];
};
export type MetricUnit = 'BYTES' | 'MILLISECONDS' | 'SECONDS' | 'REQUESTS' | 'ERRORS' | 'OPERATIONS' | 'EVENTS' | 'UNITLESS';
export type MetricLabel = Record<string, string | Record<string, string>>;
export type MetricType = 'histogram' | 'counter' | 'gauge';
export declare const MEASUREMENT_KEYS: {
    readonly DESCRIPTION: "measurement.description";
    readonly UNIT: "measurement.unit";
    readonly TYPE: "measurement.metric.type";
    readonly LABELS: "measurement.labels";
    readonly STATUS: "measurement.status";
    readonly RESULT: "measurement.result";
    readonly BUCKETS: "measurement.buckets";
};