/** Reset internal one-shot guard — exported for tests only. */
export declare function __resetWarnedOnceForTests(): void;
/**
 * Emit a one-time stderr banner when ~/.claude.json carries an apiKey that
 * claude-switch does not track. The banner fires BEFORE the key is purged
 * by accounts.load() on the next switch.
 *
 * Suppressed when NODE_ENV=test or CLAUDE_SWITCH_TESTING=1.
 */
export declare function warnUntrackedApiKeyIfNeeded(claudeJsonPath: string, accountsDirPath: string): void;