/**
 * Represents a fixed-length Last-In-First-Out (LIFO) stack that stores elements of type T.
 */
export declare class FixedLengthStack<T> {
    private stack;
    private readonly maxSize;
    /**
     * Creates a new FixedLengthStack instance with the specified maximum size.
     * @param maxSize The maximum number of elements that the stack can hold (must be greater than 0).
     */
    constructor(maxSize: number);
    /**
     * Retrieves the element at the front of the stack (the most recently added item) without removing it.
     * @returns The element at the front of the stack, or undefined if the stack is empty.
     */
    peek(): T | undefined;
    /**
     * Retrieves the elements in the stack without removing them.
     * @returns The elements in the stack.
     */
    peekAll(): T[] | undefined;
    /**
     * Adds an item to the end of the stack. If the stack is full, the oldest item is removed.
     * @param item The item to add to the stack.
     */
    enstack(item: T): void;
    /**
     * Removes and returns the item at the front of the stack. If the stack is empty, returns undefined.
     * @returns The item at the front of the stack, or undefined if the stack is empty.
     */
    destack(): T | undefined;
    /**
     * Returns the current size of the stack.
     * @returns The number of elements in the stack.
     */
    size(): number;
    /**
     * Clears all elements from the stack, making it empty.
     */
    clear(): void;
}
//# sourceMappingURL=fixed-length-stack.d.ts.map