/**
 * Pattern extraction from git diff.
 *
 * Extracted from compound-extractor.ts — heuristic extraction of reusable
 * patterns from git diff content without LLM involvement.
 */
import type { ExtractedSolution } from './extraction-gates.js';
/** Find common prefix among an array of strings */
export declare function findCommonPrefix(strings: string[]): string;
/** Simple local extraction from git diff (no LLM needed) */
export declare function extractFromDiff(gitLog: string, gitDiff: string): ExtractedSolution[];