import type { Chunk, ChunkOptions } from "./types.js";
/**
 * Structure-preserving text chunker.
 *
 * 1. If content is under maxTokens, returns a single chunk labeled "full".
 * 2. Splits by markdown headings.
 * 3. Merges adjacent sections below minTokens.
 * 4. Splits sections above maxTokens by paragraph boundaries.
 * 5. Optionally prepends a contextual prefix with fileName.
 */
export declare function chunkText(content: string, opts?: ChunkOptions): Chunk[];
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