export declare class BinaryHeap {
    private ids;
    private dists;
    private _size;
    private capacity;
    private readonly isMaxHeap;
    constructor(capacity: number, isMaxHeap?: boolean);
    /**
     * Push an element onto the heap.
     * Auto-grows when at capacity to avoid silently dropping elements.
     */
    push(id: number, dist: number): void;
    /**
     * Double the heap capacity when full.
     */
    private grow;
    pop(): number;
    peek(): number;
    peekValue(): number;
    size(): number;
    clear(): void;
    isEmpty(): boolean;
    getCapacity(): number;
    private heapifyUp;
    private heapifyDown;
}
/**
 * MaxBinaryHeap - A max-heap for HNSW result tracking.
 *
 * Keeps the FURTHEST element at the top, allowing O(log n) eviction
 * of the worst result when a better one is found.
 */
export declare class MaxBinaryHeap extends BinaryHeap {
    constructor(capacity: number);
}
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