[BUG] npm pack --dry-run undefined@undefined in an empty package

[aminnairi]

Current Behavior:

If you try to run npm pack --dry-run on a package that has no name property in its package.json file, the output shows undefined@undefined for the package name and undefined-undefined.tgz for the filename.

Expected Behavior:

I think there should be a guard for when the name property, and even version and description properties are not set whenever running npm pack.

Steps To Reproduce:

steps to reproduce the behavior:

1. Create an empty folder
2. Change directory into the created folder
3. Run npm pack --dry-run
4. See that the notice says undefined@undefined without warnings

Environment:

• OS: Linux archlinux 5.11.15-arch1-2 #1 SMP PREEMPT Sat, 17 Apr 2021 00:22:30 +0000 x86_64 GNU/Linux
• Node: 15.14.0
• npm: 7.7.6