/**
 * Text Chunker
 *
 * Strategies for splitting different content types into embeddable chunks.
 * Short text is embedded as-is; markdown is split by headings; code entities
 * are chunked by declaration; large text uses sliding window.
 *
 * @see TRL-19
 */
import type { ChunkMeta } from './types.js';
/**
 * Chunk an issue into embeddable pieces.
 */
export declare function chunkIssue(issue: {
    id: string;
    title?: string;
    description?: string;
}): ChunkMeta[];
/**
 * Chunk a decision trace into embeddable pieces.
 * Combines tool name, rationale, context, and output summary.
 */
export declare function chunkDecision(decision: {
    id: string;
    toolName: string;
    rationale?: string;
    context?: string;
    outputSummary?: string;
}): ChunkMeta[];
/**
 * Chunk a milestone message.
 */
export declare function chunkMilestone(milestone: {
    id: string;
    message?: string;
}): ChunkMeta[];
/**
 * Chunk a markdown file by heading sections.
 * Each H1/H2/H3 section becomes a separate chunk.
 * Sections that exceed MAX_CHUNK_CHARS get sliding-window split.
 */
export declare function chunkMarkdown(filePath: string, content: string): ChunkMeta[];
/**
 * Chunk code entities (functions, classes, interfaces) from a parsed file.
 * Each declaration's signature + doc-comment becomes a chunk.
 */
export declare function chunkCodeEntities(filePath: string, declarations: Array<{
    id: string;
    name: string;
    kind: string;
    signature: string;
    docComment?: string;
}>): ChunkMeta[];
/**
 * Chunk doc-comments extracted from source files.
 */
export declare function chunkDocComments(filePath: string, comments: Array<{
    line: number;
    text: string;
}>): ChunkMeta[];
/**
 * Chunk a summary.md or similar short-to-medium text file.
 */
export declare function chunkSummary(filePath: string, content: string): ChunkMeta[];
/**
 * Auto-detect file type and chunk accordingly.
 */
export declare function chunkFile(filePath: string, content: string): ChunkMeta[];
/**
 * Split long text into overlapping windows.
 */
export declare function slidingWindow(text: string): string[];
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