import type { Board, Id } from "./model.js";
export declare function repoRoot(stavesDir: string): string | null;
export declare function headCommit(root: string): string | undefined;
export interface Stale {
    job: Id;
    files: string[];
    commits: number;
}
/** Jobs whose sources changed since the commit they were described at. Derived; never stored. */
export declare function stale(b: Board, stavesDir: string): Stale[];