/**
 * dotenv Manipulator :
 * - Load environment variables from a `.env` to `process.env`
 * - Add, update, or remove variables from both your `.env` file and `process.env` <b>at runtime</b>
 * @example
 * // require
 * const Manipulator = require('dotenv-manipulator').default
 * @example
 * // import
 * import Manipulator from 'dotenv-manipulator'
 */
declare class Manipulator {
    env_path: string;
    env: {
        [x: string]: string;
    };
    encoding: 'ascii' | 'base64' | 'binary' | 'hex' | 'latin1' | 'ucs-2' | 'ucs2' | 'utf-8' | 'utf8' | 'utf16le';
    throwable: boolean;
    /**
     * Starts dotenv Manipulator
     * @param envPath Path to `.env`, default is `process.cwd()`.
     * @param throwable If set to `true` functions throw errors whenever there's an incorrect input.
     * @param encoding Specify file encoding, default is `utf8`.
     * @example
     * // basic setup
     * const Manipulator = require('dotenv-manipulator')
     * const dotenvM = new Manipulator()
     * @example
     * // complete setup
     * const Manipulator = require('dotenv-manipulator')
     * const dotenvM = new Manipulator('/path/to/project', false, 'utf-8')
     * @example
     * // undefined = default value
     * const Manipulator = require('dotenv-manipulator')
     * const dotenvM = new Manipulator(undefined, true, 'latin1')
     */
    constructor(envPath?: string, throwable?: boolean, encoding?: 'ascii' | 'base64' | 'binary' | 'hex' | 'latin1' | 'ucs-2' | 'ucs2' | 'utf-8' | 'utf8' | 'utf16le');
    private __readSync;
    /**
     * Add object keys and values to `.env` file and `process.env`
     * @param obj Object to add to the environment
     * @param force If you try to add a key/value pair that is already in the environment : `add(obj, true)` would update said variables and `add(obj)` would just ignore your input
     * @example
     * const obj = { REMOTE: '95.81.123.228', PORT: 3000 }
     * dotenvM.add(obj)
     * @example
     * // without force argument
     * console.log(process.env.REMOTE_PORT) //=> '3000'
     * dotenvM.add({ REMOTE_PORT: '2000' })
     * console.log(process.env.REMOTE_PORT) //=> '3000'
     *
     * // with force argument set to true
     * dotenvM.add({ REMOTE_PORT: '2000' }, true)
     * console.log(process.env.REMOTE_PORT) //=> '2000'
     * @example
     * // DEBUGGING #1
     * dotenvM.throwable = false
     *
     * let debug = dotenvM.add(['wrong', 'type', 'of', 'data'])
     * let debug_1 = dotenvM.add({ GOOOD: 'type', OF: 'data' })
     * console.log(debug.message) //=> [ADD_ERROR]: object must be [object Object] but received [object Array]
     * console.log(debug_1) //=> undefined
     *
     * // DEBUGGING #2
     * dotenvM.throwable = true
     *
     * try {
     *    dotenvM.add(['wrong', 'type', 'of', 'data'])
     * } catch(e) {
     *    console.log(e.message) //=> [ADD_ERROR]: object must be [object Object] but received [object Array]
     * }
     */
    add(obj: {
        [x: string]: string;
    }, force?: boolean): TypeError | undefined;
    /**
     * Remove variable from `.env` file and `process.env`
     * @param obj Key(s) you want to remove
     * @example
     * // #1
     * dotenvM.remove('REMOTE')
     * dotenvM.remove('PORT')
     *
     * // #2
     * dotenvM.remove( { REMOTE: 'value that dotenvM wont read', PORT: 'no.. really it doesnt care' } )
     *
     * // #3
     * dotenvM.remove(['REMOTE', 'PORT'])
     */
    remove(obj: {
        [x: string]: string;
    } | string | string[]): TypeError | undefined;
    private __sort;
    private __save;
}
export default Manipulator;