/*!
 * Copyright (c) Microsoft Corporation and contributors. All rights reserved.
 * Licensed under the MIT License.
 */
/**
 * @deprecated  for internal use only. public export will be removed.
 * @internal
 */
export declare class Stack<T> {
    items: T[];
    push(val: T): void;
    empty(): boolean;
    top(): T | undefined;
    pop(): T | undefined;
}
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