/**
 * The working tree as it stands, read without touching it: what it changed
 * since `HEAD`, untracked files included, and a commit of it for a copy to
 * start from.
 *
 * Both go through an index of their own, in a temporary file, so the
 * repository's index, its files and its refs stay as they were. `git add -N`
 * on the real index would do the first too, and leave every untracked file
 * showing as added in the person's `git status`.
 */
import { type GitResult } from "./run.ts";
/**
 * `git diff HEAD` with untracked files added, truncated at `maxBytes`.
 *
 * What an agent reading `diff` is handed: a new file is the ordinary case for
 * a coder, and `git diff` alone does not show one.
 */
export declare function treeDiff(cwd: string, maxBytes?: number): Promise<GitResult<string>>;
/**
 * A commit holding the tree as it stands, on top of `HEAD`, that no ref
 * points to.
 *
 * A copy made from `HEAD` would miss what the run already wrote and did not
 * commit, the patches an earlier block landed included, and its own patch
 * would then conflict with them on the way back.
 */
export declare function snapshot(cwd: string): Promise<GitResult<string>>;
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