import type { Metric } from '../api/metrics';
import type { EventContext } from './event-context';
import { Queue, QueueOptions } from './queue';
export declare class MetricsQueue extends Queue<Metric> {
    projectSlug: string;
    context: EventContext;
    constructor(options: QueueOptions<Metric> | undefined, projectSlug: string, ctx: EventContext);
    increment(name: string, properties?: {
        [key: string]: unknown;
    }): void;
    protected onSend(metrics?: Metric[]): boolean | Promise<boolean>;
}