Adding new npm module problem

When i added custom module to npm it deleted yarn and reinstall all npm modules. I just tried install a little javascript extension.

npm install mo-js

I like yarn add </> but some plugins doesn’t support yarn. Is anyway to add with npm correctly?

Can you share the actual output of any errors you are encountering?

It not outputs any error. When install mo-js or any library (with npm), i lost yarn install. I must reinstall yarn after npm-install.

Did you install Yarn with npm (i.e. npm install -g yarn)? I would not recommend that. Follow one of the following methods to install Yarn:

macOS:
https://roots.io/getting-started/docs/macos-development-environment-sage/#yarn

Ubuntu:
https://roots.io/getting-started/docs/ubuntu-linux-development-environment-sage/#yarn

Windows:

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