import type { DiscoveredPR, ParsedPRDiff } from '../learned-rules/types.js';
/** Default labels that indicate a bug-fix PR. Matched case-insensitively as substrings. */
export declare const DEFAULT_BUG_LABELS: readonly string[];
/**
 * Returns true if any label in the array contains a bug-related keyword.
 * Matches case-insensitively. Accepts optional custom bug label list.
 */
export declare function matchesBugLabels(labels: string[], bugLabels?: readonly string[]): boolean;
/**
 * Returns true if the PR title matches common bug-fix prefixes.
 * Looks for fix/bug/resolve/patch at the start or after a conventional commit prefix.
 */
export declare function matchesBugTitle(title: string): boolean;
/**
 * Returns true if the file path is a minable source file (JS/TS, Python,
 * Go, Java/Kotlin, Ruby, PHP, or Rust) that is NOT a test file or
 * declaration file.
 */
export declare function isTargetFile(path: string): boolean;
interface DiscoveryConfig {
    /** Max PRs to fetch per page (GitHub max: 100). */
    readonly perPage?: number;
    /** Max pages to paginate through. */
    readonly maxPages?: number;
    /** Custom bug labels to match. Defaults to DEFAULT_BUG_LABELS. */
    readonly bugLabels?: readonly string[];
    /** Whether to fall back to title matching if no labels match. */
    readonly titleFallback?: boolean;
    /** Whether to fetch review comments for each PR. */
    readonly fetchComments?: boolean;
}
/**
 * Discover merged bug-fix PRs from a GitHub repo.
 *
 * Flow:
 * 1. Fetch closed PRs (paginated)
 * 2. Filter to merged-only (merged_at !== null)
 * 3. Filter by bug labels (with optional title fallback)
 * 4. Optionally enrich with review comments
 * 5. Collect changed file paths
 */
export declare function discoverBugFixPRs(owner: string, name: string, config?: DiscoveryConfig): DiscoveredPR[];
/**
 * Fetch and parse diffs for a discovered PR.
 *
 * Calls the files endpoint, filters to target files,
 * and parses each file's patch into typed DiffHunks.
 */
export declare function fetchPRDiffs(owner: string, name: string, pr: DiscoveredPR): ParsedPRDiff;
export {};