Why does npm list -g lead to npm ERR! missing error?

Question

npm returns the following message after using npm list -g

npm ERR! missing: atom-package-manager@*, required by undefined@undefined
npm ERR! missing: opal-npm-wrapper@git://github.com/anthonny/opal-npm-wrapper.git#0.1.1, required by [email protected]
npm ERR! missing: xmlhttprequest@~1.6.0, required by [email protected]

screenshot:

Answer 1

I know this an old question but I've been strugging with a similar issue and figure I'd at least add what worked for me...

Problem

Running npm list -g lists all packages as expected and then throws a variety of errors including the missing errors, as mentioned above, and, for me at least, a bunch of invalid and extraneous errors such as this:

extraneous: [email protected] /usr/local/lib/node_modules/npm/node_modules/aws-sign2

I tried a bunch of solutions including npm upgrade, npm prune, as well as installing missing packages, which for me was semver:

missing: semver@2 || 3, required by [email protected]

I'm still not sure of the exact cause for these errors, though I believe this happened when I upgraded to 3.3.6.

Solution

After some headache I ran:

npm update -g --verbose

which upgraded me from v3.3.6 to v3.5.3 and got rid of all the errors. Note that the --verbose is not necessary but helpful to see what exactly is happening. Now my npm list -g returns a clean output:

/usr/local/lib
├── [email protected]
└── [email protected]

Hope this helps someone, please comment if I've stated any inaccuracies or if there's something I can add here.

Answer 2

For anyone having the same problem, try to run:

npm dedupe

for more info about npm dedupe please refer to the documentation. https://docs.npmjs.com/cli/dedupe.html

Answer 3

Remove package-lock.json in /usr/local/lib.