import { InstrumentationBase, InstrumentationConfig } from '@opentelemetry/instrumentation';
import { GrpcInstrumentationConfig } from '../types';
export declare class GrpcJsInstrumentation extends InstrumentationBase {
    protected _config: GrpcInstrumentationConfig & InstrumentationConfig;
    constructor(_config: GrpcInstrumentationConfig & InstrumentationConfig, name: string, version: string);
    setConfig(config?: GrpcInstrumentationConfig & InstrumentationConfig): void;
    init(): any[];
    /**
     * Patch for grpc.Server.prototype.register(...) function. Provides auto-instrumentation for
     * client_stream, server_stream, bidi, unary server handler calls.
     */
    private _patchServer;
    /**
     * Entry point for applying client patches to `grpc.makeClientConstructor(...)` equivalents
     * @param this GrpcJsPlugin
     */
    private _patchClient;
    /**
     * Entry point for client patching for grpc.loadPackageDefinition(...)
     * @param this - GrpcJsPlugin
     */
    private _patchLoadPackageDefinition;
    /**
     * Parse initial client call properties and start a span to trace its execution
     */
    private _getPatchedClientMethods;
    /**
     * Utility function to patch *all* functions loaded through a proto file.
     * Recursively searches for Client classes and patches all methods, reversing the
     * parsing done by grpc.loadPackageDefinition
     * https://github.com/grpc/grpc-node/blob/1d14203c382509c3f36132bd0244c99792cb6601/packages/grpc-js/src/make-client.ts#L200-L217
     */
    private _patchLoadedPackage;
}