1. for example, there is a vuenit webpack projecta created by vue. after all npms are installed, you can use npmrundv.
2. After I copied Project A to projectB, I executed npm install. After npm run dev still indicated that many modules did not exist and needed to be installed. Then I could only install one by one, and I could install whatever npm indicated.
Is there any way to solve it all at once?
Delete the node_modules folder and reinstall npmsTALL.