/**
 * CLI Limit Helpers
 *
 * Pure formatter for tier-limit-reached error messages. Extracted from cli.ts
 * so the "limit=0 means action disabled, not exhausted" branch is unit-testable
 * without invoking commander or process.exit.
 *
 * Per NinSys API v2.20.2: free tier returns `{ allowed: false, limit: 0 }` for
 * `migration` (now disabled for free). Without distinguishing limit=0 from
 * limit>0, users see "(0/0). Upgrade your plan" — looks like a UI bug.
 *
 * @since v2.11.62 — NinSys API v2.20.2 compatibility
 */
import type { UsageAction } from './core/tier/usage-service.js';
/**
 * Format a limit-reached error message for the CLI.
 *
 * - `limit === 0` → action is disabled for this tier (e.g. free can't migrate).
 *   Shows an upgrade-required message rather than "0 of 0 used".
 * - `limit > 0` → daily limit exhausted, standard upgrade prompt.
 */
export declare function formatLimitReachedMessage(action: UsageAction, current: number, limit: number): string;
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