The Cloud Functions emulator requires the module “firebase-admin” to be installed

问题

Continuing to try to get firebase serve to work again. I just asked this question (and got a good reply, thanks): npm ERR! peer dep missing: firebase-admin@^7.0.0, required by firebase-functions@2.3.1

When doing npm list firebase-admin I now see the expected output -- firebase-admin@7.3.0.

However firebase serve still does not work. I get this:

!  Your requested "node" version "6" doesn't match your global version "10"
...
!  The Cloud Functions emulator requires the module "firebase-admin" to be installed. This package is in your package.json, but it's not available. You probably need to run "npm install" in your functions directory.
i  functions: Your functions could not be parsed due to an issue with your node_modules (see above)

So firebase serve still does not see the firebase-admin module. What is going on? What should I do?

回答1:

I was seeing the same thing and it looks like you can downgrade your firebase-tools version to 6.8.0

npm install firebase-tools@6.8.0 -g

(I've tried this and it works)

回答2:

It looks like this issue now relates to the Node version you have installed locally.

I don't know the answer off the top of my head, but start looking around the node versions.

In your functions/package.json - it may be that you need to specify which node version to use (https://firebase.google.com/docs/functions/manage-functions):

// functions/package.json

{
  "name": ...,
  "scripts": ...,
  "dependencies": ...,
  
  "engines": {
    "node": "10"
  }
 
}

Just be aware Node 10 is still in beta on Firebase.

Hope this helps you down the right path to resolving the issue.

来源：https://stackoverflow.com/questions/56068579/the-cloud-functions-emulator-requires-the-module-firebase-admin-to-be-installe