a vaadin project has a package.json file,so i can run “npm install\pnpm install” .
but i found it do it again when springboot startup.
it’s not good…
Which version are you using? With latest versions that is often obsolete, only needed if there is “client add-ons”.
The tooling is built for Java developers, who don’t necessarily know nothing about npm, so that’s why it is doing it.
thanks.
i just wanna try whether that could help to accelerate frontend package install and compile process. 
It won’t help in any way. It’s going to bite you. Don’t touch npm as java developer.
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