import type { CommitCategory, IndexMetadata } from './types.js';
export declare const MAX_FILES_PER_COMMIT = 20;
/**
 * Signal keywords that make a commit worth indexing.
 * Exact set from Python filters.py RELEVANT_KEYWORDS.
 */
export declare const RELEVANT_KEYWORDS: Set<string>;
/**
 * True if commit message contains at least one signal keyword.
 * Exact port of Python is_relevant().
 */
export declare function isRelevant(message: string): boolean;
/**
 * First keyword match → category. Falls back to 'general'.
 * Exact port of Python build_metadata() category logic.
 */
export declare function categorize(message: string): CommitCategory;
/**
 * Build the searchable document text stored in ChromaDB.
 * Exact format from Python _build_document():
 *
 *   {message}
 *   Author: {name} <{email}>
 *   Date: {YYYY-MM-DD}
 *   Stats: {stats_str}
 *   Files: {comma-separated or "none"}
 */
export declare function buildDocument(message: string, authorName: string, authorEmail: string, dateStr: string, statsStr: string, files: string[]): string;
/**
 * Build the 6-line LLM-readable summary for ContextStore (Layer 2).
 * Exact format from Python summarize_commit():
 *
 *   Commit: {hash}
 *   Author: {name} <{email}>
 *   Date: {YYYY-MM-DD HH:MM UTC}
 *   Message: {message}
 *   Stats: +{ins}/-{del} lines across {n} file(s)
 *   Files changed: {comma-separated or "none"}
 */
export declare function summarizeCommit(params: {
    hash: string;
    authorName: string;
    authorEmail: string;
    date: Date;
    message: string;
    insertions: number;
    deletions: number;
    fileCount: number;
    files: string[];
}): string;
/**
 * Build structured metadata dict stored alongside the commit.
 * Exact port of Python build_metadata().
 * Returns IndexMetadata (superset of CommitMetadata).
 */
export declare function buildMetadata(params: {
    hash: string;
    authorName: string;
    authorEmail: string;
    date: Date;
    message: string;
    files: string[];
    repoName: string;
}): IndexMetadata;
/**
 * Build stats string from insertions/deletions.
 * Format: "+100/-50 lines" — used in buildDocument().
 */
export declare function buildStatsStr(insertions: number, deletions: number): string;
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