import type { UpdateCheckState } from './throttle.js';
/**
 * Determines whether an update banner should be rendered for the given
 * state. Checks version comparison, dedupe (remindedForVersion), the
 * autoUpdate.mode, and whether stderr is a TTY.
 */
export declare function shouldShowReminder(state: UpdateCheckState, currentVersion: string, mode: 'auto' | 'disabled' | 'reminder'): boolean;
/**
 * Returns true when auto-install should run: a newer version is known.
 * Mode and TTY checks are the caller's responsibility.
 */
export declare function shouldAutoUpdate(state: UpdateCheckState, currentVersion: string): boolean;
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