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# Error Message
```
ERR! child process exited with code 2 (for more info, set '--loglevel silly')
npm WARN webpack-dev-middleware@3.7.2 requires a peer of webpack@^4.0.0 but none is instal…
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## 1、为什么要自己动手搭建webpack？
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公司老项目的技术配置为react+dva+roadhog，到我接手时已经迭代开发了好几年，项目文件和依赖都十分巨大，据交接给我的开发人员说可能由于第三方升级的原因，导致编译速度十分缓慢；开发时的热更新速度一般都是10-20s+，线上打包速度更是六七分钟以上，线上打包也不是经常操作，所以时间长点忍忍也就过去了， 但是开发时的热更新速度这…
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When I use "@ geoman io/leaflet geoman free": "2.15.0" in package.json, everything is normal for the project. However, when I change the version number to 2.16.0, the following error message appears
…
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## The devDependency [@vue/cli-plugin-pwa](https://github.com/vuejs/vue-cli) was updated from `3.9.0` to `3.10.0`.
🚨 [View failing branch](https://github.com/bfh-proj1-sumfrie/frontend/compare/devel…
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## The devDependency [@vue/cli-plugin-eslint](https://github.com/vuejs/vue-cli) was updated from `3.9.2` to `3.10.0`.
🚨 [View failing branch](https://github.com/bfh-proj1-sumfrie/frontend/compare/de…
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## The devDependency [@vue/cli-plugin-unit-mocha](https://github.com/vuejs/vue-cli) was updated from `3.9.0` to `3.10.0`.
🚨 [View failing branch](https://github.com/bfh-proj1-sumfrie/frontend/compar…
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## The devDependency [@vue/cli-plugin-typescript](https://github.com/vuejs/vue-cli) was updated from `3.9.0` to `3.10.0`.
🚨 [View failing branch](https://github.com/bfh-proj1-sumfrie/frontend/compar…
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## The devDependency [@vue/cli-plugin-e2e-nightwatch](https://github.com/vuejs/vue-cli) was updated from `3.9.2` to `3.10.0`.
🚨 [View failing branch](https://github.com/bfh-proj1-sumfrie/frontend/co…
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## The devDependency [@vue/cli-plugin-babel](https://github.com/vuejs/vue-cli) was updated from `3.9.2` to `3.10.0`.
🚨 [View failing branch](https://github.com/bfh-proj1-sumfrie/frontend/compare/dev…
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碰到问题，请在 搜索是否存在相似的 issue。
不按照模板提交的 issue，会被系统自动删除。
### 基本信息
- ruoyi-vue-pro 版本：yudao-ui-admin-vue3 / yudao-ui-admin-vue2
- 操作系统：mac os 10.13.6
- 数据库：
### 你猜测可能的原因
（必填）我花费了 2-4 小时自查，发…