/**
 * MRSF Git Integration — Git-aware operations for re-anchoring and discovery.
 *
 * Uses child_process.execFile (no shell) for safety.
 * All functions degrade gracefully when Git is unavailable.
 */
import type { DiffHunk } from "./types.js";
/**
 * Check whether `git` is available on PATH.
 */
export declare function isGitAvailable(): Promise<boolean>;
/** Reset cached availability (for testing). */
export declare function resetGitCache(): void;
/**
 * Find the Git repository root from a given directory.
 * Returns null if not in a Git repo.
 */
export declare function findRepoRoot(cwd?: string): Promise<string | null>;
/**
 * Read the repository-local Git author name.
 *
 * Only `.git/config` is considered; global Git identity is intentionally
 * ignored so callers can distinguish repository identity from user defaults.
 */
export declare function getGitUserName(repoRoot: string): Promise<string | null>;
/**
 * Get the full HEAD commit SHA.
 */
export declare function getCurrentCommit(repoRoot: string): Promise<string | null>;
/** Resolve a revision name or abbreviated SHA to its canonical commit SHA. */
export declare function resolveCommit(revision: string, repoRoot: string): Promise<string | null>;
/**
 * Check if a commit hash is the same as HEAD.
 */
export declare function isStale(commentCommit: string, repoRoot: string): Promise<boolean>;
/**
 * Parse unified diff output into structured hunks.
 */
export declare function parseDiffHunks(diffOutput: string): DiffHunk[];
/**
 * Get diff hunks between two commits for a specific file.
 */
export declare function getDiff(fromCommit: string, toCommit: string, filePath: string, repoRoot: string): Promise<DiffHunk[]>;
/**
 * Calculate the net line shift for a given original line number
 * based on diff hunks.
 *
 * Returns the number of lines to add to the original line number,
 * or null if the line itself was modified/deleted.
 */
export declare function getLineShift(hunks: DiffHunk[], originalLine: number): {
    shift: number;
    modified: boolean;
};
/**
 * Get the contents of a file at a specific commit.
 * Returns null if unavailable.
 */
export declare function getFileAtCommit(commit: string, filePath: string, repoRoot: string): Promise<string | null>;
/**
 * Get list of staged files matching a pattern.
 */
export declare function getStagedFiles(repoRoot: string, pattern?: string): Promise<string[]>;
/**
 * Get staged diff hunks for a specific file.
 */
export declare function getStagedDiff(filePath: string, repoRoot: string): Promise<DiffHunk[]>;
/**
 * Detect file renames between two commits.
 * Returns a map of old path → new path.
 */
export declare function detectRenames(fromCommit: string, toCommit: string, repoRoot: string): Promise<Map<string, string>>;
/**
 * Stage a file for commit.
 */
export declare function stageFile(filePath: string, repoRoot: string): Promise<void>;
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