/**
 * Text Chunker Factory
 * Provides unified interface for text chunking strategies
 */
import type { ChunkingConfig, ChunkingResult, TextChunk } from "./ChunkingConfig.js";
/**
 * Interface for chunking strategies
 */
export interface ChunkingStrategy {
    chunk(text: string, config: ChunkingConfig): ChunkingResult;
}
/**
 * Text Chunker - Factory for creating and using chunking strategies
 */
export declare class TextChunker {
    private config;
    constructor(config?: Partial<ChunkingConfig>);
    /**
     * Get current configuration
     */
    getConfig(): ChunkingConfig;
    /**
     * Check if text needs chunking based on estimated token count
     */
    needsChunking(text: string): boolean;
    /**
     * Estimate token count for text
     */
    estimateTokens(text: string): number;
    /**
     * Chunk text using configured strategy
     */
    chunk(text: string): ChunkingResult;
    /**
     * Chunk multiple texts in batch
     */
    chunkBatch(texts: string[]): ChunkingResult[];
    /**
     * Flatten chunks from multiple texts into a single array with source tracking
     */
    chunkBatchFlat(texts: Array<{
        id: string | number;
        content: string;
    }>): Array<TextChunk & {
        sourceId: string | number;
    }>;
}
/**
 * Get or create global chunker instance
 */
export declare function getTextChunker(config?: Partial<ChunkingConfig>): TextChunker;
/**
 * Reset global chunker (useful for testing)
 */
export declare function resetTextChunker(): void;
export type { ChunkingConfig, ChunkingResult, TextChunk };
export { DEFAULT_CHUNKING_CONFIG, getChunkingConfig } from "./ChunkingConfig.js";
export { estimateTokens } from "./strategies/SentenceChunker.js";
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