import { InjectionToken } from '@angular/core';
import { TextMapPropagator } from '@opentelemetry/api';
/**
 * Interface to define propagator
 */
export interface IPropagator {
    /**
     * give an implementation of a propagator
     *
     * @return HttpTextPropagator
     */
    getPropagator(): TextMapPropagator;
}
/** injection for a propagator */
export declare const OTEL_PROPAGATOR: InjectionToken<IPropagator>;