import MdictBase, { KeyWordItem, KeyInfoItem, MDictOptions } from './mdict-base.js';
export declare class Mdict extends MdictBase {
    constructor(fname: string, options?: Partial<MDictOptions>);
    /**
     * lookupKeyInfoItem lookup the `keyInfoItem`
     * the `keyInfoItem` contains key-word record block location: recordStartOffset
     * the `recordStartOffset` should indicate the unpacked record data relative offset
     * @param word the target word phrase
     */
    lookupKeyBlockByWord(word: string, isAssociate?: boolean): KeyWordItem | undefined;
    /**
     * locate the record meaning buffer by `keyListItem`
     * the `KeyBlockItem.recordStartOffset` should indicate the record block info location
     * use the record block info, we can get the `recordBuffer`, then we need decrypt and decompress
     * use decompressed `recordBuffer` we can get the total block which contains meanings
     * then, use:
     *  const start = item.recordStartOffset - recordBlockInfo.unpackAccumulatorOffset;
     *  const end = item.recordEndOffset - recordBlockInfo.unpackAccumulatorOffset;
     *  the finally meaning's buffer is `unpackRecordBlockBuff[start, end]`
     * @param item
     */
    lookupRecordByKeyBlock(item: KeyWordItem): Uint8Array<ArrayBuffer>;
    /**
     * lookupPartialKeyInfoListById
     * decode key block by key block id, and we can get the partial key list
     * the key list just contains the partial key list
     * @param {number} keyInfoId key block id
     * @return {KeyWordItem[]}
     */
    lookupPartialKeyBlockListByKeyInfoId(keyInfoId: number): KeyWordItem[];
    /**
     * lookupInfoBlock reduce word find the nearest key block
     * @param {string} word searching phrase
     * @param keyInfoList
     */
    lookupKeyInfoByWord(word: string, keyInfoList?: KeyInfoItem[]): number;
    private decompressBuff;
    /**
     * find record which record start locate
     * @param {number} recordStart record start offset
     */
    private reduceRecordBlockInfo;
    close(): void;
}
/**
 * 经过一系列测试, 发现mdx格式的文件存在较大的词语排序问题，存在如下情况：
 * 1. 大小写的问题 比如 a-zA-Z 和 aA-zZ 这种并存的情况
 * 2. 多语言的情况，存在英文和汉字比较大小的情况一般情况下 英文应当排在汉字前面
 * 3. 小语种的情况
 * 上述的这些情况都有可能出现，无法通过字典头中的设置实现排序，所以无法通过内部的keyInfoList进行快速索引，
 * 在现代计算机的性能条件下，直接遍历全部词条也可得到较好的效果，因此目前采用的策略是全部读取词条，内部排序
 *
 */
export default Mdict;