import { Heap } from 'heap-js';
export declare class SortedSet<T> {
    indexer: (item: T) => number | string | symbol;
    heap: Heap<T>;
    items: {
        [key: string | number | symbol]: T;
    };
    itemCount: number;
    constructor(comparator: (a: T, b: T) => number, indexer: (item: T) => number | string | symbol);
    push(item: T): void;
    pop(): T;
    peek(): T;
    has(item: T): boolean;
    get length(): number;
}
export declare class SortedNumericalSet extends SortedSet<number> {
    constructor(...values: number[]);
}
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