/**
 * Sentence-based Chunker
 *
 * Splits text based on sentence boundaries while respecting size limits.
 * Best for prose and natural language content where sentence integrity matters.
 */
import type { BaseChunkerConfig, Chunk, Chunker, ChunkerValidationResult, SentenceChunkerConfig } from "../../types/index.js";
/**
 * Sentence-aware chunker implementation
 * Splits text by sentences while respecting size constraints
 */
export declare class SentenceChunker implements Chunker {
    readonly strategy: "sentence";
    private readonly defaultSentenceEnders;
    chunk(text: string, config?: SentenceChunkerConfig): Promise<Chunk[]>;
    /**
     * Split text into sentences based on sentence enders
     */
    private splitIntoSentences;
    /**
     * Split a large sentence into smaller chunks
     */
    private splitLargeSentence;
    validateConfig(config: BaseChunkerConfig): ChunkerValidationResult;
}