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@vitue/export-env-json

v1.1.0

Published

After building, automatically export the json file of the client-side available properties in .env

Downloads

5

Readme

vite-plugin-export-env-json

🚕 After building, automatically export the json file of the client-side available properties in .env

npm version Test

动机

我司前端项目开发目前在部署上存在以下问题:

  • 同一份代码需要给多个客户部署体验,而访问地址不一样可能需要重复打包;
  • 自动化构建等基础设施不健全,运维不信任 CI/CD 工具。

经过部门内小伙伴的讨论,最终采取导出环境变量的方式来解放运维的生产力。

在前端代码中使用到的环境变量(满足 vite envPrefix条件的),全部导出到指定文件,并且加以文档描述各字段用途(通过 rollup copy 插件实现)。

接着前端需要通过 AJAX 的方式,请求到该配置文件并使用:

import axios from 'axios';

// 要注意触发的时机
export default (): Promise<string> => {
  if (process.env.NODE_ENV === 'production') {
    return new Promise((resolve) => {
      axios.get('env.json').then(({ data }) => {
        resolve(data.W6S_BASE_API);
      });
    });
  }
  return new Promise((resolve) => {
    resolve(process.env.W6S_BASE_API as string);
  });
};

把环境变量输出到index.html也是一种方式,只是没有比修改一个名义上的配置文件更加贴切。

安装

需要 [email protected]+ 版本。

yarn add @vitue/export-env-json -D

# npm
npm install --save-dev @vitue/export-env-json

使用

// vite.config.ts/.js
import { ExportEnvJson } from '@vitue/export-env-json';

export default defineConfig({
  plugins: [
    vue(),

    // 该插件只会在 build 阶段的最后执行
    ExportEnvJson({
      fileName: 'env.json',
      outDir: 'dist'
    })
  ],
})

参数说明:

  • fileName:非必需,默认为 env.json;
  • outDir:非必需,默认为 dist 目录,会跟 Vite 的 build.outDir 保持一致。

导出的配置只会是 JSON 文件。

License

MIT.