[BUG] npm outdated does not list global installed packages

Is there an existing issue for this?

• I have searched the existing issues

This issue exists in the latest npm version

• I am using the latest npm

Current Behavior

I have installed calculator@0.1.11 globally by running npm install -g calculator@0.1.11. Running npm help outdated shows me the documentation, which lists global as a valid option. So I tried to run:

npm outdated -g

But it outputs nothing. Running all the possible variations:

npm outdated -g

npm outdated --global

npm outdated global

None of them give any output. I expected to see the available upgrade to calculator@0.1.12

Expected Behavior

npm outdated -g
Package     Current  Wanted  Latest  Location                 Depended by
calculator   0.1.11  0.1.12  0.1.12  node_modules/calculator  User

Steps To Reproduce

1. npm install -g calculator@0.1.11
2. npm outdated -g

Environment

I installed node through nvm 1.1.9

• npm: 8.19.3
• Node.js: v16.19.0
• OS Name: Windows 22H2
• System Model Name: ?
• npm config:

; node bin location = C:\Program Files\nodejs\node.exe
; node version = v16.19.0
; npm local prefix = C:\Users\User
; npm version = 8.19.3
; cwd = C:\Users\User
; HOME = C:\Users\User
; Run `npm config ls -l` to show all defaults.

Start by reproducing the behavior with the documented npm outdated -g command after installing calculator@0.1.11 globally, then trace the outdated command's global-package entry point. Done means the command reports the installed calculator package and its available 0.1.12 upgrade as shown in the expected output.