export declare class AsyncContext<T> {
    private readonly _storage;
    private _default;
    get defaultValue(): T;
    set defaultValue(value: T);
    constructor(defaultValue: T);
    set(value: T): void;
    get(): T;
    run<R, A extends unknown[]>(value: T, callback: (...args: A) => R, ...args: A): R;
}