export interface GitState {
    readonly commit: string | null;
    readonly uncommittedChanges: boolean;
}
/**
 * Short HEAD commit and whether the work tree differs from it. The record file
 * itself is ignored, since earlier records always leave it modified. Outside a
 * repo (or before the first commit) the commit is null.
 */
export declare function readGitState(cwd: string, signal?: AbortSignal): Promise<GitState>;
/**
 * Whether the project has visibly moved on since a record was written: a
 * different HEAD, or local edits on a tree that was clean when checked. Edits
 * on top of an already-dirty tree can't be told apart, so this can miss
 * changes but never invents one. Unknown live state means "not changed".
 */
export declare function changedSinceCheck(recorded: {
    readonly checkedAt: string | null;
} & GitState, current: GitState | null): boolean;