TypeError: Cannot read property 'wanted' of undefined:

Question

I have been deploying functions with firebase successfully all day learning how to use it. I was trying to see what happened if I initialized another directory that deploys to t

Answer 1

This just started happening to me also...

Looks like either npm is outputting a different result for this command

npm outdated firebase-functions --json=true
// for me outputs  {}\n

And the script checkFirebaseSDKVersion.js is expecting something like this (which it would get if your firebase-functions WAS actually out of date)

{
  "current": "2.5.0",
  "wanted": "2.5.0",
  "latest": "3.0.2",
  "location": "node_modules/some path /firebase-functions"
}

OR a blank output... more likely in your case

What you can do to 'Fix' it

This will probably get fixed pretty soon as it start affecting more people... for now modify /usr/local/lib/node_modules/firebase-tools/lib/checkFirebaseSDKVersion.js

add this to account for the updated empty output of {}\n around line 24

            if (data && data.toString() !== "{}\n") {
                output = JSON.parse(data.toString("utf8")); // existing Code!
            }

Not sure how the update process works for npm, so you might have to revert this to update it when fixed, but I don't think so.

Hope that helps!