[BUG] npm v6 windows install with prefix

[Xesenix]

As I didn't find an existing issue for this problem here is its description:

Current behavior

When running npm i --prefix project on Windows with node 14 and npm 6.14 install results in a lot of files created inside the project path. This problem doesn't appear on MAC or Linux versions or on Windows node 15 npm 7

Log after running command:

root\project\is-docker -> root\project\node_modules\is-docker\cli.js
root\project\mkdirp -> root\project\node_modules\mkdirp\bin\cmd.js
root\project\nopt -> root\project\node_modules\nopt\bin\nopt.js
root\project\installed-package-contents -> root\project\node_modules\@npmcli\installed-package-contents\index.js
root\project\sshpk-conv -> root\project\node_modules\sshpk\bin\sshpk-conv
root\project\sshpk-sign -> root\project\node_modules\sshpk\bin\sshpk-sign
...

Results in a lot of files where they shouldn't be:

Expected behavior

I assume those installed files should be inside project/node_modules/.bin but I am not sure about it.

Steps To Reproduce:

1. create folder structure:

root
- project

2. run npm init on root and root/project
3. add some dependencies in project for example npm i @angular/cli
4. remove node_modules - simulate as the whole project would be cloned from the repository
5. try running npm i --prefix project from root folder

Environment

• OS: Windows 10
• Node: 14.17.4
• npm: 6.14.14

[ruyadorno]

npm v6 is no longer in active development; We will continue to push security releases to v6 at our team's discretion as-per our Support Policy.

If your bug is preproducible on v7, please re-file this issue using our new issue template.

If your issue was a feature request, please consider opening a new RRFC or RFC. If your issue was a question or other idea that was not CLI-specific, consider opening a discussion on our feedback repo

Closing: This is an automated message.