/**
 * @author Sean sean.snow@live.com
 * @date 2015/12/25
 */
export declare class BitSet {
    words: any[];
    sizeIsSticky: boolean;
    wordsInUse: number;
    constructor(nbits: number);
    set(bitIndex: number): void;
    get(bitIndex: number): Boolean;
    length(): number;
    size(): number;
    cardinality(): number;
    nextSetBit(fromIndex: number): number;
    nextClearBit(fromIndex: number): number;
    _initWords(nbits: number): void;
    _wordIndex(bitIndex: number): number;
    _expandTo(wordIndex: number): void;
    _ensureCapacity(wordsRequired: number): void;
    toString(): string;
}
export default BitSet;