react脚手架构建运行时报错问题
具体操作
sudo npm install -g create-react-app
mkdir react-first-demo
cd react-first-demo
create-react-app react-cli
cd react-cli
npm install (依赖安装完以后执行npm start)
npm start
错误
$ react-scripts start
There might be a problem with the project dependency tree.
It is likely not a bug in Create React App, but something you need to fix locally.
The react-scripts package provided by Create React App requires a dependency:
“webpack”: “4.29.6”
Don’t try to install it manually: your package manager does it automatically.
However, a different version of webpack was detected higher up in the tree:
/Users/mac/Desktop/node_modules/webpack (version: 3.8.0)
Manually installing incompatible versions is known to cause hard-to-debug issues.
If you would prefer to ignore this check, add SKIP_PREFLIGHT_CHECK=true to an .env file in your project.
…
解决方法
在react-cli项目里面添加.env文件，文件中添加SKIP_PREFLIGHT_CHECK=true，在运行npm start。错误提示里又说这样可以解决目前问题，可能还会出现其他问题，暂时没遇到，有问题可以交流，或者有什么更好的方法。