export type Metric = {
    total: number;
    max?: number;
    count?: number;
};
export type CommandMetric = {
    total: number;
    started: number;
    command: string;
};
export declare const initMetric: () => {
    total: number;
    max: number;
    count: number;
};
export declare const registerOnMetric: (total: number, metric: Metric) => void;
export declare const mergeMetrics: (inMetric: Metric, outMetric: Metric) => void;