Name: dotenv
Owner: simplabs
Description: Loads environment variables from .env for nodejs projects.
Forked from: motdotla/dotenv
Created: 2017-06-08 07:22:11.0
Updated: 2017-06-08 07:22:13.0
Pushed: 2017-06-28 13:50:41.0
Size: 156
Language: JavaScript
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Dotenv is a zero-dependency module that loads environment variables from a .env file into process.env. Storing configuration in the environment separate from code is based on The Twelve-Factor App methodology.
install dotenv --save
As early as possible in your application, require and configure dotenv.
ire('dotenv').config()
Create a .env file in the root directory of your project. Add
environment-specific variables on new lines in the form of NAME=VALUE.
For example:
OST=localhost
SER=root
ASS=s1mpl3
That's it.
process.env now has the keys and values you defined in your .env file.
db = require('db')
onnect({
st: process.env.DB_HOST,
ername: process.env.DB_USER,
ssword: process.env.DB_PASS
If you are using iojs-v1.6.0 or later, you can use the --require (-r) command line option to preload dotenv. By doing this, you do not need to require and load dotenv in your application code.
de -r dotenv/config your_script.js
The configuration options below are supported as command line arguments in the format dotenv_config_<option>=value
de -r dotenv/config your_script.js dotenv_config_path=/custom/path/to/your/env/vars
Alias: load
config will read your .env file, parse the contents, assign it to
process.env,
and return an Object with a parsed key containing the loaded content or an error key if it failed.
You can additionally, pass options to config.
Default: .env
You can specify a custom path if your file containing environment variables is named or located differently.
ire('dotenv').config({path: '/custom/path/to/your/env/vars'})
Default: utf8
You may specify the encoding of your file containing environment variables using this option.
ire('dotenv').config({encoding: 'base64'})
The engine which parses the contents of your file containing environment variables is available to use. It accepts a String or Buffer and will return an Object with the parsed keys and values.
dotenv = require('dotenv')
buf = new Buffer('BASIC=basic')
config = dotenv.parse(buf) // will return an object
ole.log(typeof config, config) // object { BASIC : 'basic' }
The parsing engine currently supports the following rules:
BASIC=basic becomes {BASIC: 'basic'}# are treated as commentsEMPTY= becomes {EMPTY: ''})SINGLE_QUOTE='quoted' becomes {SINGLE_QUOTE: "quoted"})MULTILINE="new\nline" becomesTILINE: 'new
'}
JSON={"foo": "bar"} becomes {JSON:"{\"foo\": \"bar\"}").env file?No. We strongly recommend against committing your .env file to version
control. It should only include environment-specific values such as database
passwords or API keys. Your production database should have a different
password than your development database.
.env files?No. We strongly recommend against having a “main” .env file and an “environment” .env file like .env.test. Your config should vary between deploys, and you should not be sharing values between environments.
In a twelve-factor app, env vars are granular controls, each fully orthogonal to other env vars. They are never grouped together as ?environments?, but instead are independently managed for each deploy. This is a model that scales up smoothly as the app naturally expands into more deploys over its lifetime.
We will never modify any environment variables that have already been set. In particular, if there is a variable in your .env file which collides with one that already exists in your environment, then that variable will be skipped. This behavior allows you to override all .env configurations with a machine-specific environment, although it is not recommended.
If you want to override process.env you can do something like this:
t fs = require('fs')
t dotenv = require('dotenv')
t envConfig = dotenv.parse(fs.readFileSync('.env.override'))
(var k in envConfig) {
ocess.env[k] = envConfig[k]
For dotenv@2.x.x: Yes. dotenv.config() now returns an object representing
the parsed .env file. This gives you everything you need to continue
setting values on process.env. For example:
dotenv = require('dotenv')
variableExpansion = require('dotenv-expand')
t myEnv = dotenv.config()
ableExpansion(myEnv)
For dotenv@2.x.x: Use dotenv-expand.
For dotenv@1.x.x: We haven't been presented with a compelling use case for expanding variables and believe it leads to env vars that are not “fully orthogonal” as The Twelve-Factor App outlines.[1][2] Please open an issue if you have a compelling use case.
See CONTRIBUTING.md
See CHANGELOG.md
See LICENSE
Here's just a few of many repositories using dotenv:
Here's some projects that expand on dotenv. Check them out.