dotenv-ts

load environment variables from .env file, into process.env

Install

in production mode, use real environment variables instead

npm i -D dotenv-ts

Usage

require('dotenv-ts').config()

or with options

require('dotenv-ts').config(options)

Options

Key	required	Type	Default	Description
dirname	no	string	process.cwd()	path to find .env file
mode	no	string	process.env.NODE_ENV or "dev"	mode to determine additional .env file's name. one of prod, dev, test, debug
canOverwrite	no	boolean	false	specify whether .env variables can overwrite process.env. if not, conflicting key will logged and not applied.
priority	yes	"local" or "mode" or undefined	"local"	determines which file's value will be used when .env.${mode} and .env.local has same key. if unspecified(undefined) and has conflicting key, error will thrown
variables	no	Object	process.env	key-value store for variables - used to resolve variables
shareVariables	yes	boolean	true	share variables cross file (can reference variable in another file)

Required options' default value is used if no option provided.

WARN: If option object is passed but required option is not set, the value will be undefined which can lead to unexpected behavior

Feature

load environment variable from .env file into process.env

supports multiline and variable resolution also

Notice

There may be any breaking changes before the first stable version.

License

MIT