import type { OutputFormat } from "../types.js";
export declare function validateEmail(email: string): void;
export declare function validateTags(tags: string[]): void;
export declare function validateDate(date: string): void;
export declare function validateLimit(limit: number): number;
export declare function validateExpiry(expiresAt?: string, expiresIn?: string): string | undefined;
export declare function validateFormat(format: string): OutputFormat;
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