export interface UpdateStatus {
    current: string;
    latest: string | null;
    /** True when `latest` is newer than what is running. */
    behind: boolean;
    /** Why the check could not be made, if it could not. */
    error?: string;
    /** How this copy was installed, which decides the upgrade command. */
    manager: 'npm' | 'unknown';
}
/** The command that upgrades this installation. */
export declare function updateCommand(): string;
/**
 * Full update status for the panel. Unlike checkForUpdate this ignores the cache and reports
 * why a check failed, because a panel opened deliberately should say what it found rather than
 * silently show nothing.
 */
export declare function fetchUpdateStatus(currentVersion: string): Promise<UpdateStatus>;
export declare function checkForUpdate(currentVersion: string): Promise<string | null>;
//# sourceMappingURL=update-check.d.ts.map