import type { BaseCtx } from "../execution/index.js";
/**
 * Token for optional interceptors injection.
 * Register providers with this token to intercept task/workflow execution.
 */
export declare const INTERCEPTORS: unique symbol;
/**
 * Abstract class for intercepting task/workflow execution.
 * Implement this to add cross-cutting concerns like ALS, tracing, logging.
 */
export declare abstract class Interceptor {
    abstract intercept<T>(ctx: BaseCtx<any>, next: () => Promise<T>): Promise<T>;
}