import { GenericObject } from '../../../typings';
import BaseTraceExporter from './base';
import Tracer from '../tracer';
import Span from '../span';
export default class EventLegacyTraceExporter extends BaseTraceExporter {
    constructor(options: GenericObject);
    init(tracer: Tracer): void;
    spanStarted(span: Span): void;
    spanFinished(span: Span): void;
    generateMetricPayload(span: Span): GenericObject;
    private processExtraMetrics;
    private assignExtraMetrics;
}