import { Event } from "./event";
export interface InterceptEvent<Name extends string | symbol = string, T = unknown> extends Event<Name> {
    /**
     * @param value
     * @throws InvalidStateError
     */
    intercept(value: T | Promise<T>): void;
    transitionWhile?(value: T | Promise<T>): void;
}
export declare function isInterceptEvent<T = unknown>(value: object): value is InterceptEvent<string | symbol, T>;