吴克
吴克
  • 发布:2022-02-20 16:50
  • 更新:2023-11-01 16:02
  • 阅读:6798

【报Bug】vue create创建的项目webpack4报错TypeError: Cannot convert undefined or null to object

分类:uni-app

产品分类: uniapp/H5

PC开发环境操作系统: Windows

PC开发环境操作系统版本号: Windows10

HBuilderX类型: 正式

HBuilderX版本号: 3.3.11

浏览器平台: Chrome

浏览器版本: 94

项目创建方式: HBuilderX

操作步骤:

vue create -p dcloudio/uni-preset-vue my-project
npm run dev:h5

预期结果:

正常运行

实际结果:

huimeng@0.1.0 dev:h5 C:\Users\hugetiny\Documents\HBuilderProjects\huimeng
cross-env NODE_ENV=development UNI_PLATFORM=h5 vue-cli-service uni-serve

请注意运行模式下,因日志输出、sourcemap以及未压缩源码等原因,性能和包体积,均不及发行模式。
INFO Starting development server...
ERROR TypeError: Cannot convert undefined or null to object
TypeError: Cannot convert undefined or null to object
at Function.assign (<anonymous>)
at C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@dcloudio\vue-cli-plugin-uni\lib\chain-webpack.js:30:32
at Object.tap (C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\webpack-chain\src\Use.js:14:20)
at C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@dcloudio\vue-cli-plugin-uni\lib\chain-webpack.js:30:10
at Array.forEach (<anonymous>)
at C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@dcloudio\vue-cli-plugin-uni\lib\chain-webpack.js:25:17
at C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@vue\cli-service\lib\Service.js:268:40
at Array.forEach (<anonymous>)
at Service.resolveChainableWebpackConfig (C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@vue\cli-service\lib\Service.js:268:26)
at Service.resolveWebpackConfig (C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@vue\cli-service\lib\Service.js:272:48)
at PluginAPI.resolveWebpackConfig (C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@vue\cli-service\lib\PluginAPI.js:132:25)
at serve (C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@dcloudio\vue-cli-plugin-uni\commands\serve.js:51:31)
at Service.run (C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@vue\cli-service\lib\Service.js:262:12)
at processTicksAndRejections (internal/process/task_queues.js:97:5)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! huimeng@0.1.0 dev:h5: cross-env NODE_ENV=development UNI_PLATFORM=h5 vue-cli-service uni-serve
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the huimeng@0.1.0 dev:h5 script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\hugetiny\AppData\Roaming\npm-cache_logs\2022-02-20T08_19_32_872Z-debug.log

bug描述:

webpack4是官方推荐的。
webpack4之后,
npm run dev:h5
报错

huimeng@0.1.0 dev:h5 C:\Users\hugetiny\Documents\HBuilderProjects\huimeng
cross-env NODE_ENV=development UNI_PLATFORM=h5 vue-cli-service uni-serve

请注意运行模式下,因日志输出、sourcemap以及未压缩源码等原因,性能和包体积,均不及发行模式。
INFO Starting development server...
ERROR TypeError: Cannot convert undefined or null to object
TypeError: Cannot convert undefined or null to object
at Function.assign (<anonymous>)
at C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@dcloudio\vue-cli-plugin-uni\lib\chain-webpack.js:30:32
at Object.tap (C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\webpack-chain\src\Use.js:14:20)
at C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@dcloudio\vue-cli-plugin-uni\lib\chain-webpack.js:30:10
at Array.forEach (<anonymous>)
at C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@dcloudio\vue-cli-plugin-uni\lib\chain-webpack.js:25:17
at C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@vue\cli-service\lib\Service.js:268:40
at Array.forEach (<anonymous>)
at Service.resolveChainableWebpackConfig (C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@vue\cli-service\lib\Service.js:268:26)
at Service.resolveWebpackConfig (C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@vue\cli-service\lib\Service.js:272:48)
at PluginAPI.resolveWebpackConfig (C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@vue\cli-service\lib\PluginAPI.js:132:25)
at serve (C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@dcloudio\vue-cli-plugin-uni\commands\serve.js:51:31)
at Service.run (C:\Users\hugetiny\Documents\HBuilderProjects\huimeng\node_modules\@vue\cli-service\lib\Service.js:262:12)
at processTicksAndRejections (internal/process/task_queues.js:97:5)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! huimeng@0.1.0 dev:h5: cross-env NODE_ENV=development UNI_PLATFORM=h5 vue-cli-service uni-serve
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the huimeng@0.1.0 dev:h5 script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\hugetiny\AppData\Roaming\npm-cache_logs\2022-02-20T08_47_36_976Z-debug.log

2022-02-20 16:50 负责人:无 分享
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软猫引擎钟某

软猫引擎钟某

我也出现同样的问题,通过uni-cli执行的以下几条命令(无其他任何命令):

vue create -p dcloudio/uni-preset-vue my-project
cd my-project
npm i webpack@4.29.5 --force
npm run build:mp-weixin

环境为Mac系统(实际上Ubuntu也测试了也一样),执行npm run build:mp-weixin时报错内容如下:

uniapp@0.1.0 build:mp-weixin
cross-env NODE_ENV=production UNI_PLATFORM=mp-weixin vue-cli-service uni-build

小程序各家浏览器内核及自定义组件实现机制存在差异,可能存在样式布局兼容问题,参考:https://uniapp.dcloud.io/matter?id=mp
✔ 开始编译当前项目至 mp-weixin 平台...
ERROR TypeError: Cannot convert undefined or null to object
TypeError: Cannot convert undefined or null to object
at Function.assign (<anonymous>)
at /Users/galen/Project/dtalkMall/已上线商城/玉熙坊_6.7.0/DtalkMall/Client/test/uniapp/node_modules/@dcloudio/vue-cli-plugin-uni/lib/chain-webpack.js:30:32
at Object.tap (/Users/galen/Project/dtalkMall/已上线商城/玉熙坊_6.7.0/DtalkMall/Client/test/uniapp/node_modules/webpack-chain/src/Use.js:14:20)
at /Users/galen/Project/dtalkMall/已上线商城/玉熙坊_6.7.0/DtalkMall/Client/test/uniapp/node_modules/@dcloudio/vue-cli-plugin-uni/lib/chain-webpack.js:30:10
at Array.forEach (<anonymous>)
at /Users/galen/Project/dtalkMall/已上线商城/玉熙坊_6.7.0/DtalkMall/Client/test/uniapp/node_modules/@dcloudio/vue-cli-plugin-uni/lib/chain-webpack.js:25:17
at /Users/galen/Project/dtalkMall/已上线商城/玉熙坊_6.7.0/DtalkMall/Client/test/uniapp/node_modules/@vue/cli-service/lib/Service.js:268:40
at Array.forEach (<anonymous>)
at Service.resolveChainableWebpackConfig (/Users/galen/Project/dtalkMall/已上线商城/玉熙坊_6.7.0/DtalkMall/Client/test/uniapp/node_modules/@vue/cli-service/lib/Service.js:268:26)
at PluginAPI.resolveChainableWebpackConfig (/Users/galen/Project/dtalkMall/已上线商城/玉熙坊_6.7.0/DtalkMall/Client/test/uniapp/node_modules/@vue/cli-service/lib/PluginAPI.js:145:25)
at module.exports (/Users/galen/Project/dtalkMall/已上线商城/玉熙坊_6.7.0/DtalkMall/Client/test/uniapp/node_modules/@vue/cli-service/lib/commands/build/resolveAppConfig.js:9:22)
at getWebpackConfig (/Users/galen/Project/dtalkMall/已上线商城/玉熙坊_6.7.0/DtalkMall/Client/test/uniapp/node_modules/@dcloudio/vue-cli-plugin-uni/commands/build.js:84:88)
at getWebpackConfigs (/Users/galen/Project/dtalkMall/已上线商城/玉熙坊_6.7.0/DtalkMall/Client/test/uniapp/node_modules/@dcloudio/vue-cli-plugin-uni/commands/build.js:113:13)
at build (/Users/galen/Project/dtalkMall/已上线商城/玉熙坊_6.7.0/DtalkMall/Client/test/uniapp/node_modules/@dcloudio/vue-cli-plugin-uni/commands/build.js:153:26)
at /Users/galen/Project/dtalkMall/已上线商城/玉熙坊_6.7.0/DtalkMall/Client/test/uniapp/node_modules/@dcloudio/vue-cli-plugin-uni/commands/build.js:75:11
at Service.run (/Users/galen/Project/dtalkMall/已上线商城/玉熙坊_6.7.0/DtalkMall/Client/test/uniapp/node_modules/@vue/cli-service/lib/Service.js:262:12)

  • 软猫引擎钟某

    坑已爬,问题已解决。uni-cli官方文档不严谨导致的。


    由于执行npm install -g @vue/cli 默认安装的是最新版本,刚好当前vue-cli版本为5.x


    但uni-cli仅支持vue-cli 4.x版本,将版本降级就行了。


    解决方案如下:


    移除原vue-cli


    npm remove -g @vue/cli


    重新安装vue-cli 4.x版本


    npm install -g @vue/cli@4.5.14


    然后重新拉一遍即可:


    vue create -p dcloudio/uni-preset-vue my-project


    cd my-project


    npm run build:mp-weixin

    2022-03-04 01:34

  • 1***@qq.com

    感谢,问题已解决。

    2022-04-27 14:42

DCloud_UNI_LXH

DCloud_UNI_LXH

只执行了 vue create -p dcloudio/uni-preset-vue my-project npm run dev:h5 就报错了?

  • 吴克 (作者)

    是的

    2022-02-21 10:59

DCloud_UNI_FXY

DCloud_UNI_FXY

发测试工程

  • 吴克 (作者)

    你是指整个生成的全部代码zip打包发给你吗?

    2022-02-21 17:44

  • 吴克 (作者)

    windows10下面,我试了

    node降级到14,12

    vue create -p dcloudio/uni-preset-vue#alpha my-alpha-project

    都同样报这个错误

    2022-02-21 17:47

DCloud_uni-ad_HDX

DCloud_uni-ad_HDX

没有复现问题,把工程打个包发下

  • 吴克 (作者)

    已经解决了@vue/cli只能用4的版本

    2022-02-21 20:25

5***@qq.com

5***@qq.com

如果不想卸载vue-cli后再重装,可以使用npx

npx @vue/cli@4.5.14 create -p dcloudio/uni-preset-vue my-uniapp

参考:https://stackoverflow.com/questions/59660391/is-there-any-npx-create-react-app-equivalent-for-vue-cli

2***@qq.com

2***@qq.com

没用啊,其他同事把项目拉过去全是这个错

7***@qq.com

7***@qq.com

离谱,cli版本5.0.8,启动报错Error: PostCSS plugin autoprefixer requires PostCSS 8. 降低autoprefixer之后,可以正常启动项目。

接着安装eslint,再启动项目就开始报错,TypeError: Cannot convert undefined or null to object。

  • 7***@qq.com

    最后换了npx @vue/cli@4.5.14 create -p dcloudio/uni-preset-vue my-uniapp 来重新创建vue2项目,啥报错都没了。

    2023-11-01 17:07

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