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.

译文：

Dotenv是一个从​ ​.env​ ​​ 文件加载环境变量到​ ​process.env​ ​上的零依赖的模块

文档

• npm:​ ​https://www.npmjs.com/package/dotenv​ ​
• github:​ ​https://github.com/motdotla/dotenv​ ​

安装

pnpm i -D dotenv

示例

配置文件

# .env
DATABASE_URL='mysql://root:123456@127.0.0.1/data'

require('dotenv').config();

console.log(process.env.DATABASE_URL);
// mysql://root:123456@127.0.0.1/data

ES6

// package.json "type": "module",
import 'dotenv/config'

console.log(process.env.DATABASE_URL);
// mysql://root:123456@127.0.0.1/data