import type { ExpireWarning } from '../config/types.js';
/**
 * Detects expiration warnings in a dotenv file.
 * fx:
 *
 * # @expire 2024-12-31
 * API_KEY=
 *
 * This will generate a warning that API_KEY expires on 2024-12-31.
 * @param filePath - Path to the dotenv file
 * @returns Array of expiration warnings
 */
export declare function detectEnvExpirations(filePath: string): ExpireWarning[];
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