/**
 * Copyright 2019, OpenCensus Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/// <reference types="node" />
import { BasePlugin, Span } from '@opencensus/core';
export interface IORedisCommand {
    reject: (err: Error) => void;
    resolve: (result: {}) => void;
    promise: Promise<{}>;
    args: Array<string | Buffer | number>;
    callback: Function | undefined;
    name: string;
}
/** IORedis instrumentation plugin for Opencensus */
export declare class IORedisPlugin extends BasePlugin {
    /** Constructs a new IORedis instance. */
    constructor(moduleName: string);
    /**
     * Patches IORedis operations.
     */
    protected applyPatch(): any;
    /** Unpatches all IORedis patched functions. */
    applyUnpatch(): void;
    /** Patch send command internal to trace requests */
    private getPatchSendCommand;
    /**
     * Ends a created span.
     * @param span The created span to end.
     * @param resultHandler A callback function.
     */
    patchEnd(span: Span, resultHandler?: Function): () => Promise<{}>;
}
declare const plugin: IORedisPlugin;
export { plugin };