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

I think this issue is caused by a fix in npm 6.10.0, see https://github.com/npm/cli/pull/176.

A workaround is to modify /usr/lib/node_modules/firebase-tools/lib/checkFirebaseSDKVersion.js (linux). For macOS and nvm, see comments below.

from:

if (!output) {
  return;
}

to:

if (!output || !output["firebase-functions"]) {
  return;
}