import { SpanStatusCode, SpanStatus } from '@opentelemetry/api';
import { IgnoreMatcher } from './types';
/**
 * Symbol to include on grpc call if it has already emitted an error event.
 * grpc events that emit 'error' will also emit 'finish' and so only the
 * error event should be processed.
 */
export declare const CALL_SPAN_ENDED: unique symbol;
/**
 * Convert a grpc status code to an opentelemetry SpanStatus code.
 * @param status
 */
export declare const grpcStatusCodeToOpenTelemetryStatusCode: (status?: any) => SpanStatusCode;
/**
 * Convert grpc status code to an opentelemetry SpanStatus object.
 * @param status
 */
export declare const grpcStatusCodeToSpanStatus: (status: number) => SpanStatus;
/**
 * Returns true if the current plugin configuration
 * ignores the given method.
 * @param methodName the name of the method
 * @param ignoredMethods a list of matching patterns
 * @param onException an error handler for matching exceptions
 */
export declare const methodIsIgnored: (methodName: string, ignoredMethods?: IgnoreMatcher[] | undefined) => boolean;