如何解决TypeError:environment.teardown不是函数? [英] How to solve TypeError: environment.teardown is not a function?

问题描述

我无法测试使用create-react-app创建的应用程序，所有指南均表示该测试默认情况下有效，但是当我尝试纱线测试"时，它要求安装"jest-cli"，并且安装后出现错误"TypeError :environment.teardown不是函数".

i cant test application which created with create-react-app, all guides says that test is working by default, but when i try "yarn test" it requires install 'jest-cli' and after installation gives an error "TypeError: environment.teardown is not a function".

推荐答案

您不需要自己安装jest-cli，它应该是开箱即用的.

You shouldn't need to install jest-cli yourself, it should come out of the box.

请尝试以下操作:

1. 删除package-lock.json，yarn.lock和node_modules
2. 从package.json中的依赖项中删除笑话
3. 然后执行npm install或yarn install.

1. Delete package-lock.json, yarn.lock and node_modules
2. Remove jest from the dependencies in package.json
3. Then do npm install or yarn install.

这篇关于如何解决TypeError:environment.teardown不是函数?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！