Javascript Jest TypeError：路径必须是字符串。收到未定义
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Jest TypeError: Path must be a string. Received undefined
提问by GibboK
Below settings for my package.json
下面是我的 package.json 的设置
If I run from command line npm testall jest test cases are executed properly.
In case I use directly the command jestfrom command line I receive this error:
如果我从命令行运行，npm test所有 jest 测试用例都会正确执行。如果我直接从命令行使用命令jest，我会收到此错误：
Test suite failed to run
TypeError: Path must be a string. Received undefined at assertPath (path.js:7:11) at Object.relative (path.js:538:5)
测试套件无法运行
TypeError: Path must be a string. Received undefined at assertPath (path.js:7:11) at Object.relative (path.js:538:5)
This happens on any test files.
这发生在任何测试文件上。
Any idea what could be wrong and how to fix it?
知道什么可能是错的以及如何解决吗？
"scripts": {
"test": "standard && jest",
"format": "standard --fix",
"start": "webpack-dev-server --config webpack.config.dev.js",
"build": "webpack --config webpack.config.prod.js"
},
采纳答案by GibboK
I solved this issue using:
我使用以下方法解决了这个问题：
- npm uninstall -g jest
- npm install -g jest
- npm cache clean
- npm install
- npm 卸载 -g 开玩笑
- npm install -g 开玩笑
- npm 缓存清理
- 安装
回答by eyarmush
I am not entirely sure what the problem here is, but I was facing the same issue and what worked for me was updating the Jest version. I was using 20 but I switched to 21 and now it magically works again.
我不完全确定这里的问题是什么，但我遇到了同样的问题，对我有用的是更新 Jest 版本。我使用的是 20，但我切换到 21，现在它又神奇地工作了。
Update version in package.jsonand then run rm -rf node_modules && npm install
更新版本package.json然后运行rm -rf node_modules && npm install
回答by Robin
In my case i had to update jest to version 21.x (from 20.x).
就我而言，我不得不将 jest 更新到版本 21.x（从 20.x）。
Try running npm install jest@latest --save-dev.
尝试运行npm install jest@latest --save-dev。
回答by Dominic Tracey
For me, it was the jest-cli package bumping to 21.x. So npm update jest-cli --save-dev
对我来说，是 jest-cli 包升级到 21.x。所以npm update jest-cli --save-dev
回答by Will Humphreys
For me I had to downgrade. Version 21.x worked for me.
对我来说，我不得不降级。21.x 版对我有用。
回答by Harsh Shah
I solved this issue using:
我使用以下方法解决了这个问题：
remove node_modulesremove package-lock.json
移除node_modules移除package-lock.json
remove dev dependence from package.jsonof jest npm remove jest --save-dev.
从package.json开玩笑中删除开发依赖npm remove jest --save-dev.
npm cache clean
npm cache clean
then run command npm install
然后运行命令 npm install
then install npm install jest@latest --save-dev
然后安装 npm install jest@latest --save-dev
this works for me
这对我有用
回答by Chihab
npm install [email protected]
npm install [email protected]
Installing this version of react-dev-utilshelped, when sometimes the commands in the accepted answers didn't.
安装此版本的react-dev-utils帮助，有时接受的答案中的命令没有。
Good luck y'all!
祝你们好运！
