export declare function getEnvVariableMap(filepath: string): Record<string, any>;
/**
 * 读取文件中环境变量的值，支持：
 * - NPM_TOKEN=xxx
 * - NPM_TOKEN = xxx
 * @param {string} key 环境变量的key
 * @param {string} filepath 保存环境变量的文件路径
 * @returns {string} 环境变量的值
 */
export declare function readEnvVariable(key: string, filepath: string): string;