dotenv config code example

Example 1: install dotenv

# For python users only
pip install python-dotenv

Example 2: dotenv

$ npm install dotenv

//--------------------

on file .env 
//--------------------
DB_HOST=localhost
DB_USER=root
DB_PASS=s1mpl3
DB_NAME=banco_de_dados
DB_PORT=3306
//--------------------

import the config from .env file 
//--------------------

require('dotenv').config()
module.exports = {
    username:process.env.DB_USER,
    password:process.env.DB_PASS,
    database:process.env.DB_NAME,
    host:process.env.DB_HOST,
    dialect:"mysql"
}

Example 3: .env

require('dotenv').config()
const dotenv=require('dotenv');

//Usuage
process.env.NAME

Example 4: dotenv not loading process.env in node

Rename your file to just .env, removing any prefix
require it as early as possible in your application with the code snippet below
require('dotenv').config();

Example 5: DOTENV_CONFIG_PATH

"scripts": {
    "lint": "tslint --project tsconfig.json",
    "build": "tsc",
    "prestart": "npm run build",
    "prestart:dev": "npm run build",
    "prestart:test": "npm run build",
    "start": "node -r dotenv/config . dotenv_config_path=./.env",
    "start:dev": "node -r dotenv/config . dotenv_config_path=./.env.dev",
    "start:test": "node -r dotenv/config . dotenv_config_path=./.env.test",
    "test": "echo \"Error: no test specified\" && exit 1"
  },