import { CompareFn } from '..';
import { Heap } from './heap';
/**
 * A binary heap is a heap implemented as a binary tree with an additional shape property
 * ([source](https://en.wikipedia.org/wiki/Binary_heap)).
 *
 * **Shape property**: Must be a complete binary tree. This means all levels of the tree
 * (except possibly the last one) are fully filled. If the last level of the tree is incomplete,
 * the nodes of that level are filled from left to right.
 *
 * #### Complexity
 *
 * | Property | Average | Worst |
 * | :------- | :------ | :---- |
 * | Space    | O(n)    | O(n)
 * | Push     | O(1)    | O(log n)
 * | Peek     | O(1)	| O(1)
 * | Pop      | O(log n)| O(log n)
 * | Search   | O(n)    | O(n)
 */
export declare class BinaryHeap<T> implements Heap<T> {
    /**
     * The array containing every element.
     */
    protected array: T[];
    /**
     * The function to determine the order of elements.
     */
    protected compare: CompareFn<T>;
    /**
     * Instantiate a heap.
     *
     * @param compareFn - The function to determine the order of elements.
     * @param elements - A set of elements to initialize the list with.
     */
    constructor(compareFn: CompareFn<T>, elements?: Iterable<T>);
    addAll(elements: Iterable<T>): number;
    clear(): void;
    comparator(): CompareFn<T>;
    contains(element: T): boolean;
    delete(element: T): boolean;
    merge(heap: Heap<T>): this;
    peek(): T | undefined;
    pop(): T | undefined;
    push(value: T): number;
    pushPop(value: T): T;
    replace(value: T): T | undefined;
    get size(): number;
    sorted(): Iterable<T>;
    /**
     * Receive an iterator through the list.
     *
     * **Note:** Unexpected behavior can occur if the collection is modified during iteration.
     *
     * @returns An iterator through the list
     */
    [Symbol.iterator](): Iterator<T>;
    update(curElement: T, newElement: T): boolean;
}