export declare const GRACE_PERIOD_CHOICES: readonly [{
    readonly value: 0;
    readonly label: "Stop immediately";
    readonly hint: "if the old secret leaked";
}, {
    readonly value: number;
    readonly label: "1 hour";
}, {
    readonly value: number;
    readonly label: "24 hours";
}, {
    readonly value: number;
    readonly label: "7 days";
}];
export declare const DEFAULT_GRACE_PERIOD_SECONDS: number;
/**
 * Parses `--previous-secret-ttl`: whole seconds (`3600`) or a duration made of distinct units
 * (`1h`, `24h`, `7d`, `1d12h`).
 */
export declare function parseGracePeriod(value: string): number;