export declare const RESUMABLE: readonly ['install', 'lock', 'doctor', 'post-update'];
export type ResumableStep = (typeof RESUMABLE)[number];
export declare const markGreen: (root: string, step: ResumableStep, asked: string) => Promise<void>;
export declare const resumedPast: (root: string, asked: string) => Promise<{
    finishedAt: string;
    step: ResumableStep;
} | undefined>;
export declare const timedOutInReport: (root: string, tier: string) => boolean;