import { Chunk } from './base';
/** Type for include delimiter options
 *
 * @enum {string}
 */
type IncludeDelim = 'prev' | 'next';
/** Interface for RecursiveLevel data
 *
 * @interface RecursiveLevelData
 * @property {string | string[]} [delimiters] - The delimiters to use for chunking.
 * @property {boolean} [whitespace] - Whether to use whitespace as a delimiter.
 * @property {IncludeDelim} [includeDelim] - Whether to include the delimiter in the previous or next chunk.
 */
interface RecursiveLevelData {
    delimiters?: string | string[];
    whitespace?: boolean;
    includeDelim?: IncludeDelim;
}
/** Class to represent recursive chunking rules at a specific level
 *
 * @class RecursiveLevel
 * @property {string | string[]} [delimiters] - The delimiters to use for chunking.
 * @property {boolean} [whitespace] - Whether to use whitespace as a delimiter.
 * @property {IncludeDelim} [includeDelim] - Whether to include the delimiter in the previous or next chunk.
 */
export declare class RecursiveLevel {
    /** Custom delimiters for chunking */
    delimiters?: string | string[];
    /** Whether to use whitespace as a delimiter */
    whitespace: boolean;
    /** Whether to include the delimiter in the previous or next chunk */
    includeDelim: IncludeDelim;
    /**
     * Constructs a new RecursiveLevel object.
     *
     * @param {RecursiveLevelData} data - The data to construct the RecursiveLevel from.
     */
    constructor(data?: RecursiveLevelData);
    /**
     * Validates the RecursiveLevel object.
     *
     * @private
     */
    private validate;
    /** Return a string representation of the RecursiveLevel
     *
     * @returns {string} The string representation of the RecursiveLevel.
     */
    toString(): string;
    /** Return the RecursiveLevel as a dictionary-like object
     *
     * @returns {RecursiveLevelData} The dictionary-like object.
     */
    toDict(): RecursiveLevelData;
    /** Create RecursiveLevel object from a dictionary
     *
     * @param {RecursiveLevelData} data - The dictionary-like object.
     * @returns {RecursiveLevel} The RecursiveLevel object.
     */
    static fromDict(data: RecursiveLevelData): RecursiveLevel;
    /** Create RecursiveLevel object from a recipe
     *
     * @param {string} name - The name of the recipe.
     * @param {string} lang - The language of the recipe.
     * @returns {Promise<RecursiveLevel>} The RecursiveLevel object.
     */
    static fromRecipe(name: string, lang?: string): Promise<RecursiveLevel>;
}
/** Interface for RecursiveRules data
 *
 * @interface RecursiveRulesData
 * @property {RecursiveLevelData[]} [levels] - The recursive levels.
 */
interface RecursiveRulesData {
    levels?: RecursiveLevelData[];
}
/** Class to represent recursive chunking rules
 *
 * @class RecursiveRules
 * @property {RecursiveLevel[]} [levels] - The recursive levels.
 */
export declare class RecursiveRules {
    /** List of recursive levels */
    levels: RecursiveLevel[];
    constructor(data?: RecursiveRulesData);
    /** Return a string representation of the RecursiveRules
     *
     * @returns {string} The string representation of the RecursiveRules.
     */
    toString(): string;
    /** Return the number of levels
     *
     * @returns {number} The number of levels.
     */
    get length(): number;
    /** Get a level by index
     *
     * @param {number} index - The index of the level.
     * @returns {RecursiveLevel | undefined} The level.
     */
    getLevel(index: number): RecursiveLevel | undefined;
    /** Return an iterator over the levels
     *
     * @returns {Iterator<RecursiveLevel>} The iterator over the levels.
     */
    [Symbol.iterator](): Iterator<RecursiveLevel>;
    /** Create a RecursiveRules object from a dictionary
     *
     * @param {RecursiveRulesData} data - The dictionary-like object.
     * @returns {RecursiveRules} The RecursiveRules object.
     */
    static fromDict(data: RecursiveRulesData): RecursiveRules;
    /** Return the RecursiveRules as a dictionary-like object
     *
     * @returns {RecursiveRulesData} The dictionary-like object.
     */
    toDict(): RecursiveRulesData;
    /** Create a RecursiveRules object from a recipe
     *
     * @param {string} name - The name of the recipe.
     * @param {string} lang - The language of the recipe.
     * @param {string} path - The path to the recipe.
     * @returns {Promise<RecursiveRules>} The RecursiveRules object.
     */
    static fromRecipe(name?: string, lang?: string, path?: string): Promise<RecursiveRules>;
}
/** Interface for RecursiveChunk data
 *
 * @interface RecursiveChunkData
 * @property {string} text - The text of the chunk.
 * @property {number} startIndex - The starting index of the chunk.
 * @property {number} endIndex - The ending index of the chunk.
 * @property {number} tokenCount - The number of tokens in the chunk.
 * @property {number} [level] - The level of recursion for the chunk.
 */
interface RecursiveChunkData {
    text: string;
    startIndex: number;
    endIndex: number;
    tokenCount: number;
    level?: number;
    embedding?: number[];
}
/** Class to represent recursive chunks
 *
 * @class RecursiveChunk
 * @property {number} [level] - The level of recursion for the chunk.
 */
export declare class RecursiveChunk extends Chunk {
    /** The level of recursion for the chunk */
    level?: number;
    constructor(data: {
        text: string;
        startIndex: number;
        endIndex: number;
        tokenCount: number;
        level?: number;
        embedding?: number[];
    });
    /** Return a string representation of the RecursiveChunk
     *
     * @returns {string} The string representation of the RecursiveChunk.
     */
    toString(): string;
    /** Return the RecursiveChunk as a dictionary-like object
     *
     * @returns {RecursiveChunkData} The dictionary-like object.
     */
    toDict(): RecursiveChunkData;
    /** Create a RecursiveChunk object from a dictionary
     *
     * @param {RecursiveChunkData} data - The dictionary-like object.
     * @returns {RecursiveChunk} The RecursiveChunk object.
     */
    static fromDict(data: RecursiveChunkData): RecursiveChunk;
}
export {};