import { IConfigOptions, IConfigOutput, IEnvObject } from "./interfaces";
/**
 * Module to parse the .env.vault file
 * @param options - The configuration options
 * @returns The parsed object
 */
declare function _parseVault(options: IConfigOptions): IEnvObject;
/**
 * Module to verify and return the .env.vault file path
 * @param options - The configuration options
 * @returns The .env.vault file path
 */
declare function _vaultPath(options: any): any;
/**
 * Module to verify and return the DOTENV_KEY vault key
 * @param options - The configuration options
 * @returns The DOTENV_KEY as a string
 */
declare function _dotenvKey(options?: IConfigOptions): string;
/**
 * Module to get instructions for decrypting the .env.vault file
 * @param result -
 * @param dotenvKey
 * @returns
 */
declare function _instructions(result: IConfigOutput, dotenvKey: string): {
    ciphertext: string;
    key: any;
};
/**
 * Module responsible to resolve home path
 * @param envPath - The path to resolve
 * @returns The resolved path
 */
declare function _resolveHome(envPath: string): string;
/**
 * Module to load environment variables from .env.vault file
 * @param options - The configuration options
 * @returns The parsed object
 */
export declare function _configVault(options: IConfigOptions): IConfigOutput;
/**
 * Module to load environment variables from .env file
 * @param options - The configuration options
 * @returns The parsed object
 * @public API
 */
export declare function config(options?: IConfigOptions): IConfigOutput;
/**
 * Module to load environment variables from .env file
 * @param options - The configuration options
 * @returns The parsed object
 * @public API
 */
export declare function configDotenv(options?: IConfigOptions): IConfigOutput;
/**
 * Module to load environment variables from .env file
 * @param envFile - The source of the .env file
 * @returns The parsed object
 * @public API
 */
export declare function parse(envFile: Buffer | string): Record<string, string>;
/**
 * Decrypts a base64 encoded string
 * @param encrypted - The base64 encoded string to decrypt
 * @param keyStr - The key to use for decryption
 * @returns The decrypted string
 * @public API
 */
export declare function decrypt(encrypted: string, keyStr: string): string;
/**
 * Populates the environment with the given parsed object
 * @param envObject - The object to populate the environment with (e.g. process.env)
 * @param parsed - The parsed object
 * @param options - The configuration options
 * @public API
 */
export declare function populate(envObject: IEnvObject, // Usually process.env
parsed: IEnvObject, options?: IConfigOptions): void;
/**
 * Test swap for private functions
 */
export { _parseVault, _vaultPath, _dotenvKey, _instructions, _resolveHome };