/**
 * @module
 * This module provides functions and type definitions to work with the AsyncLocalStorage tracing context.
 * It's primarily intended for internal use, but the API is public, and may be useful when creating custom
 * subscribers.
 */
import { AsyncLocalStorage } from "node:async_hooks";
import type { ISubscriber } from "./subscriber.js";
/**
 * The subscriber context. This holds a reference to the current subscriber registered in the async context.
 */
export type SubscriberContext = {
    /**
     * The subscriber registered in the async context.
     */
    subscriber: ISubscriber<unknown>;
    /**
     * Clones the current context.
     */
    clone(): SubscriberContext;
};
/**
 * The AsyncLocalStorage instance used to store the subscriber context.
 */
export declare const context: AsyncLocalStorage<SubscriberContext>;
/**
 * Creates a new subscriber context with the provided subscriber.
 *
 * @param subscriber The subscriber to use in the new context.
 * @returns The new context.
 */
export declare function createSubscriberContext(subscriber: ISubscriber<unknown>): SubscriberContext;
/**
 * Retrieves the current subscriber context or throws an error if no context is found.
 *
 * @returns The current subscriber context or throws an error if no context is found.
 */
export declare function getSubscriberContextOrThrow(): SubscriberContext;
/**
 * Retrieves the current subscriber context or `undefined` if no context is found.
 *
 * @returns The current subscriber context or `undefined` if no context is found.
 */
export declare function getSubscriberContext(): SubscriberContext | undefined;
export declare function setDefaultGlobalSubscriber(subscriber: SubscriberContext): void;
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