export default class GitHelper {
    /**
     * Create a temporary directory containing only the changed files between two Git references
     *
     * @param repoDir - The path to the Git repository directory
     * @param from - The source commit/branch reference for diff comparison
     * @param to - The target commit/branch reference for diff comparison
     * @returns Promise resolving to the path of the temporary directory containing changed files
     * @throws Error if Git operations fail or file copying encounters issues
     */
    static createDirectoryWithDiff(repoDir: string, from: string, to: string): Promise<string>;
    /**
     * Verify and resolve a commit SHA to its full form
     *
     * @param repoDir - The path to the Git repository directory
     * @param commitSha - The commit SHA or reference to verify (can be short SHA, HEAD, branch name, etc.)
     * @returns Promise resolving to the full commit SHA
     * @throws Error if the commit SHA cannot be verified or resolved
     */
    static verifyCommitSha(repoDir: string, commitSha: string): Promise<string>;
    /**
     * Gets changed line ranges for each file between two commits
     *
     * @param repoDir - The path to the Git repository directory
     * @param from - The source commit/branch reference for diff comparison
     * @param to - The target commit/branch reference for diff comparison
     * @returns Promise resolving to a map of file paths to arrays of changed line ranges
     * @throws Error if Git diff operation fails
     * @example
     * ```typescript
     * const changedLines = await GitHelper.getChangedLineRanges('/path/to/repo', 'main', 'feature-branch');
     * ```
     */
    static getChangedLineRanges(repoDir: string, from: string, to: string): Promise<Map<string, Array<{
        start: number;
        end: number;
    }>>>;
    /**
     * Gets the status of files changed between two commits
     * Returns a map of file paths to their status ('A'=added, 'M'=modified, 'D'=deleted, 'R'=renamed)
     *
     * @param repoDir - The path to the Git repository directory
     * @param from - The source commit/branch reference for diff comparison
     * @param to - The target commit/branch reference for diff comparison
     * @returns Promise resolving to a map of file paths to their Git status
     * @throws Error if Git diff operation fails
     * @example
     * ```typescript
     * const statuses = await GitHelper.getFileStatuses('/path/to/repo', 'main', 'feature-branch');
     * console.log(statuses.get('src/file.ts')); // 'M' for modified, 'A' for added, etc.
     * ```
     */
    static getFileStatuses(repoDir: string, from: string, to: string): Promise<Map<string, string>>;
    /**
     * Finds the git root directory by traversing up the directory tree
     *
     * @param startDir - Optional starting directory to search from (defaults to current working directory)
     * @returns Promise resolving to the absolute path of the Git repository root
     * @throws Error if no Git repository is found or Git operation fails
     * @example
     * ```typescript
     * const gitRoot = await GitHelper.findGitRoot('/path/to/subdirectory');
     * console.log(gitRoot); // '/path/to/repo'
     * ```
     */
    static findGitRoot(startDir?: string): Promise<string>;
}