/**
 * Represents a context stack item that holds contextual data and associated items
 * in scope for the duration of an asynchronous invocation.
 */
export declare class ContextStackItem {
    private _data;
    private _parent;
    private _refCount;
    /**
     * Initializes a new context stack item.
     *
     * @param data An object that will be held in scope.
     * @param parent The parent context stack item.
     */
    constructor(data: Object, parent: ContextStackItem);
    /**
     * Gets the context data for the current context stack item.
     *
     * @returns An object that contains the context data for the current context stack item.
     */
    data: Object;
    /**
     * Gets the parent context stack item.
     *
     * @returns A context stack item that is the parent of the current.
     */
    parent: ContextStackItem;
    /**
     * Gets the reference count of the current context stack item.
     *
     * @returns The current reference count.
     */
    refCount: number;
    /**
     * Adds a reference to the current context stack item.
     *
     * @returns The current reference count.
     */
    addRef(): number;
    /**
     * Releases a reference from the current context stack item.
     *
     * @returns The current reference count.
     */
    release(): number;
}