@devnetic/load-env

load-env is a zero-dependencies module to work with environment variables from .env files, or any .dot files with the same structure.. This last feature is one of the main differences with another similar packages, because with load-env you can read not just .env files, you can read any .dot file o similar files with an equivalent structure.

Another main feature is the possibility to save config values to a .dot file.

Usage

loadEnv.load(filename: string = '.env', options: LoadOptions = {}): void | Config

LoadOptions {
  returnConfig?: boolean
  separator?: string
}

To load a .env file just run the load() function in the loadEnv module.

import * as loadEnv from '@devnetic/load-env' // or
// const loadEnv = require('@devnetic/load-env')

loadEnv.load()

But if you want return the config values in an object instead of set process.env, you can use the load() function returnConfig parameter.

import * as loadEnv from '@devnetic/load-env' // or
// const loadEnv = require('@devnetic/load-env')

const config = loadEnv.load('your_path_to/.env', { returnConfig: true })

To load .dot files different to .env just run the load() function in the loadEnv module with the necessary file path.

import * as loadEnv from '@devnetic/load-env' // or
// const loadEnv = require('@devnetic/load-env')

loadEnv.load('your_path_to/.errors-description', { separator: `\r\n`})

The default line separator for .dot files is '\n', but you can use a different separator using the load() function options parameter.

loadEnv.set(key: string, value: string): void

To set a value in process.env just run the set() function in the loadEnv module with the necessary key and value.

import * as loadEnv from '@devnetic/load-env' // or
// const loadEnv = require('@devnetic/load-env')

loadEnv.set('KLE0003', 'Error message 03')

Now the new value is available in process.env.KLE0003.

loadEnv.parse(config: string, options: ParseOptions = {}): Config

To parse values just run the parse() function in the loadEnv module with the necessary config values in the follow format key1=value1\nkey2=value2. By default this function returns an object with the parsed keys and values, but could set the values in process.env too, just setting the parameter createEnv to true in the options parameter.

ParseOptions {
  createEnv?: boolean
  separator?: string
}

import * as loadEnv from '@devnetic/load-env' // or
// const loadEnv = require('@devnetic/load-env')

const config = loadEnv.parse('KLE0003=Error message 03')
console.log(JSON.stringify(config)) // { "KLE0003": "Error message 03" }

loadEnv.parse('KLE0002=Error message 02\nKLE0003=Error message 03', { createEnv: true })
// Now the new value are available in process.env.KLE0002 and process.env.KLE0003

loadEnv.save(filename: string, config: Object, separator: string = '\n' ): boolean

To save a config to a .dot file, you can use the loadEnv's .save() function.

import * as loadEnv from '@devnetic/load-env' // or
// const loadEnv = require('@devnetic/load-env')

const config = { DB_HOST: 'localhost', DB_USER: 'root', DB_PASS: 's1mpl3' }

loadEnv.save('your_path_to/.env-dev', config)