/**
 * A circular buffer implementation for storing log lines with a fixed capacity
 */
export declare class CircularBuffer<T> {
    private buffer;
    private head;
    private tail;
    private size;
    private readonly capacity;
    /**
     * Create a new circular buffer
     * @param capacity Maximum number of items the buffer can hold
     */
    constructor(capacity: number);
    /**
     * Add an item to the buffer, overwriting the oldest item if full
     * @param item Item to add to the buffer
     */
    push(item: T): void;
    /**
     * Get all items currently in the buffer in order of insertion
     * @returns Array of items in order of insertion (oldest to newest)
     */
    getAll(): T[];
    /**
     * Get the number of items in the buffer
     */
    getSize(): number;
    /**
     * Get the capacity of the buffer
     */
    getCapacity(): number;
    /**
     * Clear all items from the buffer
     */
    clear(): void;
}