[BUG] inconsistent behavior between Case-sensitive filesystem and non-case-sensitive filesystem

[arily]

Current Behavior:

npm will install the local module with inconsistent case in non-case sensitive filesystem

Expected Behavior:

inconsistent should be checked and throw an error when Inconsistent case ( at least should be the default behavior.)

Steps To Reproduce:

let's say we have a local module at /path/to/app/path/to/my/Local_module,
in a non-case-sensitive system install a local module with inconsistent path

npm install Path/tO/mY/lOcAl_Module

would work
but when deploy to an case-sensitive system
npm install will fail with error

npm WARN checkPermissions Missing write access to /path/to/app/node_modules/Path/tO/mY/lOcAl_Module

Environment:

production

• OS: Ubuntu 20.04
• Node: 10.16.0
• npm: 6.13.2

development

• OS: macOS 10.15.6
• Node: 12.16.1
• npm: 6.14.8

[arily]

update: "rm -rf node_modules" then re-run "npm install" will fix the problem one time

[darcyclarke]

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.