/**
 * Chunking Configuration Types
 * Defines configuration options for text chunking strategies
 */
export type ChunkingStrategy = "sentence" | "sliding_window" | "paragraph";
export interface ChunkingConfig {
    /** Enable or disable chunking (default: true) */
    enabled: boolean;
    /** Chunking strategy to use (default: "sentence") */
    strategy: ChunkingStrategy;
    /** Target chunk size in tokens (default: 450 for 512 limit with margin) */
    chunkSize: number;
    /** Overlap between chunks as a fraction (default: 0.1 = 10%) */
    overlap: number;
    /** Minimum chunk size in tokens - don't split smaller texts (default: 50) */
    minChunkSize: number;
    /** Maximum chunk size as hard limit (default: 500) */
    maxChunkSize: number;
    /** Characters per token estimate for prose (default: 4) */
    charsPerTokenProse: number;
    /** Characters per token estimate for code (default: 3.5) */
    charsPerTokenCode: number;
}
export declare const DEFAULT_CHUNKING_CONFIG: ChunkingConfig;
/**
 * Result of chunking a text
 */
export interface TextChunk {
    /** The chunk content */
    content: string;
    /** Index of this chunk within the source text */
    index: number;
    /** Total number of chunks from the source text */
    totalChunks: number;
    /** Character offset where this chunk starts in the original text */
    startOffset: number;
    /** Character offset where this chunk ends in the original text */
    endOffset: number;
    /** Estimated token count for this chunk */
    estimatedTokens: number;
    /** Strategy used to create this chunk */
    strategy: ChunkingStrategy;
}
/**
 * Metadata about the chunking operation
 */
export interface ChunkingResult {
    /** Original text that was chunked */
    originalLength: number;
    /** Whether the text was actually chunked or returned as-is */
    wasChunked: boolean;
    /** Chunks produced */
    chunks: TextChunk[];
    /** Strategy used */
    strategy: ChunkingStrategy;
    /** Estimated total tokens in original text */
    estimatedTotalTokens: number;
}
/**
 * Get chunking config from environment or defaults
 */
export declare function getChunkingConfig(): ChunkingConfig;
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