简单粗暴配置package.json中scripts命令脚本，（配置开发环境，预发布环境，以及生产环境）

我的是nextjs项目，找到package.json配置scripts命令

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 "scripts": {    "dev": "NEXT_PUBLIC_DOMAIN_ENV=dev next dev",    "pred": "NEXT_PUBLIC_DOMAIN_ENV=pred next dev",    "prod": "NEXT_PUBLIC_DOMAIN_ENV=prod next dev",    "build:dev": "NEXT_PUBLIC_DOMAIN_ENV=dev next build && output: export",    "build:pred": "NEXT_PUBLIC_DOMAIN_ENV=pred next build && output: export",    "build:prod": "NEXT_PUBLIC_DOMAIN_ENV=prod next build && output: export",    "build": "next build",    "start": "next start",    "lint": "next lint"  },

NEXT_PUBLIC_DOMAIN_ENV=dev  这里是关键   NEXT_PUBLIC_DOMAIN_ENV是自定义命名的

编辑公共方法或直接页面调用

let prefix = ''if (process.env.NEXT_PUBLIC_DOMAIN_ENV === 'dev') {  prefix = 'http://dev.app.？？？.com'} else if (process.env.NEXT_PUBLIC_DOMAIN_ENV === 'pred') {  prefix = 'http://pred.app.？？？.com'} else {  prefix = 'https://app.？？？.com'}