import { opentelemetry } from "./lib";
export type SessionContext = {
    sessionId?: string;
};
export type SessionContextOptions = {
    sessionId: string;
};
/**
 * Gets the current active context
 * @returns The active `Context`
 */
export declare const getActiveContext: () => opentelemetry.api.Context;
/**
 * Gets the Core SessionContext from the current active context
 * @returns A `SessionContext` Object
 */
export declare function getSessionContext(): SessionContext;
/**
 * Bind the current active context to a target function or event emitter
 * This is needed for example when you want to trace code
 * that is triggered from an `EventEmitter`.
 * Due to how the context is propagated, the callback would otherwise lose its parent context.
 *
 * @param target function or `EventEmitter` to bind
 * @returns The bound function or `EventEmitter`
 */
export declare function bindActiveContext<T>(target: T): T;
/**
 * Sets the `sessionId` from the `SessionContext`
 * on a new Context and executes the wrapped function with that context.
 * Used to automatically annotate any spans below with the `SessionContext` data attributes.
 *
 * @param sessionContextOptions The new Core `SessionContext` to set
 * @param fn The callback function which executes with the new context
 * @returns A promise resolving with the callback's return value
 */
export declare function withSessionContext<T>(sessionContextOptions: SessionContextOptions, fn: () => Promise<T>): Promise<T>;