import { IHttpRequestCorrelator } from './IHttpRequestCorrelator';
/**
 * Correlation service that can provide or forward an ID
 * that will be injected both in HTTP requests and log events,
 * using plugins and middlewares.
 * @remarks
 * This service only works with NodeJS 12.17/13.10 or later since it relies
 * on the new {AsyncLocalStorage} class, from the async_hooks module.
 * We don't provide an alternate implementation since we don't want
 * to introduce any external dependency to this project.
 * @see https://nodejs.org/api/async_hooks.html#async_hooks_new_asynclocalstorage
 *
 * See also the documentation of the {IHttpRequestCorrelator} for a concrete
 * example of such an implementation.
 */
export declare class HttpRequestCorrelator implements IHttpRequestCorrelator {
    private readonly idGenerator?;
    private readonly storage;
    private nextId;
    /**
     * Creates a new instance of a {HttpRequestCorrelator}
     * @param [idGenerator] an optional custom ID generator
     */
    constructor(idGenerator?: (() => string) | undefined);
    /**
     * Generates a new ID for correlating multiple HTTP requests.
     *
     * If a custom generator was not provided in the constructor,
     * a default ID will be generated, without any warranty of its unicity
     * (format is 'CID-<index>'). Note that we don't generate a Guid because
     * we don't want add any external dependency to this library.
     * @remarks
     * Note that if you provide explicitely a Correlation ID to the
     * `withId` or `withIdAsync` methods, `createNewId` won't be called.
     */
    createNewId(): string;
    /**
     * gets the current correlation ID
     */
    getId(): string | undefined;
    /**
     * Starts a new context and installs the submitted correlation ID (or generates a new one
     * if undefined), then invokes the submitted callback.
     * @param work a callback to invoke with the submitted correlation ID
     * @param [cid] the correlation ID to install be before invoking the submitted callback
     */
    withId<T>(work: () => T, cid?: string): T;
    /**
     * Starts a new context and installs the submitted correlation ID (or generates a new one
     * if undefined), then invokes the submitted callback.
     * This is the promisified version of the `withId` method.
     * @param work a callback to invoke with the submitted correlation ID
     * @param [cid] the correlation ID to install be before invoking the submitted callback
     */
    withIdAsync<T>(work: () => Promise<T>, cid?: string): Promise<T>;
    bind<T>(target: T): T;
    private bindEmitter;
    private bindFunction;
}