UI库在写单元测试时，如果遇到mono-repo，如何指定process.env.TARO_ENV

[luna-zhao-8]

相关平台

H5

复现仓库

https://github.com/luna-zhao-8/mono-repo-taro-project
浏览器版本: Chrome 83
使用框架: React

复现步骤

yarn build
yarn test

期望结果

执行h5环境，测试通过

实际结果

FAIL tests/Card.test.js
  ● Test suite failed to run

    Cannot find module './weapp/index' from 'index.js'

    Require stack:
      /Users/luna.zhao/privatespace/mono-repo-taro-project/packages/ui/dist/index.js
      .temp/component/Card.js
      tests/Card.test.js


    However, Jest was able to find:
        'weapp/index.ts'

    You might want to include a file extension in your import, or update your 'moduleFileExtensions', which is currently ['js', 'jsx', 'json'].

    See https://jestjs.io/docs/en/configuration#modulefileextensions-arraystring

       6 |             module.exports.default = module.exports
       7 |           } else {
    >  8 |               module.exports = require('./weapp/index')
         |                                ^
       9 |               module.exports.default = module.exports
      10 |             }

      at Resolver.resolveModule (../../node_modules/jest-resolve/build/index.js:299:11)
      at Object.<anonymous> (../ui/dist/index.js:8:32)

Test Suites: 1 failed, 1 total
Tests:       0 total
Snapshots:   0 total
Time:        1.704s
Ran all test suites.

环境信息

 Taro CLI 2.2.9 environment info:
    System:
      OS: macOS 10.15.5
      Shell: 5.7.1 - /bin/zsh
    Binaries:
      Node: 14.2.0 - /usr/local/bin/node
      Yarn: 1.22.4 - /usr/local/bin/yarn
      npm: 6.14.4 - /usr/local/bin/npm
    npmPackages:
      @tarojs/taro: 2.2.9 => 2.2.9 
      eslint-plugin-taro: 2.2.9 => 2.2.9 

[scarcoco]

同问，项目中使用 2.0.6 版本，然后工程也是 mono-repo，按照 taro-ui 的单测逻辑，先用 --ui 方式把 tsx、ts 等文件编译到 .temp 目录下 js，然后再给 .temp 目录下文件写单测，感觉好傻，另外工程中引入了其他内部包（@scope/xxxx），按照这种方式也没法引入编译后的 .temp 目录下的文件。

编译 taro build --ui 之后，把里面引入的 Taro 变成了 Nerv，搞不明白。

import Taro from '@tarojs/taro' 

import Nerv from "nervjs";
import Taro from "@tarojs/taro-h5";