import { type Metric } from '@dxos/protocols/proto/dxos/tracing';
import { BaseCounter } from './base';
export declare class MapCounter extends BaseCounter {
    values: Map<string, number>;
    units?: string;
    constructor({ units }?: {
        units?: string;
    });
    inc(key: string, by?: number): void;
    getData(): Metric;
}
//# sourceMappingURL=map-counter.d.ts.map