functions: Cannot start emulator. Error: Cannot find module '@google-cloud/functions-emulator/src/config'
This is the error message I get when I try to run functions locally on Mac. My Firebase version is 3.16.0. I tried doing sudo npm install -g @google-cloud/functions-emulator as well. But still no use. Please help.
Working Solution!(OSX) None of the above worked for me. After a long struggle, I found the following solution.
cd my_project/functions
npm install @google-cloud/functions-emulator
Copy @google-cloud/functions-emulator folder generated inside node_modules.
cd /usr/local/lib/node_modules/@google-cloud && open .
Paste the functions-emulator folder here.
In your project's root directory, copy package.json inside functions/node_modules/@google-cloud/functions-emulator
cd /usr/local/lib && open .
Paste the package.json here.
npm install
Hurray! You are good to go. Now go back to your project's root directory and run.
sudo firebase serve --only hosting,functions
And the emulator should start normally.
Note: Do not run sudo npm install -g @google-cloud/functions-emulator since the files will be removed and reinstalled. This is where the installation fails and emulator fails to run.
Hope this helps!
The following worked for me.
current package.json snippet
"dependencies": {
"@google-cloud/common-grpc": "^0.5.3",
"@google-cloud/firestore": "^0.11.1",
"firebase-functions": "^0.8.1",
"firebase-admin": "5.8.1"
}
My system: Ubuntu 16.04.3
I had the same problem and the reason is that "@google-cloud/functions-emulator" is not installed in the 'npm global packages folder'.
In my case it happened because I installed firebase-tools globally using yarn, and I used it because when installing firebase-tools globally using npm I was getting an folder access error, which did not happen with yarn.
What I did to solve the problem was to follow these simple instruction from npm website to use a different folder for npm global packages (https://docs.npmjs.com/getting-started/fixing-npm-permissions).
Then I installed again with 'npm install -g firebase-tools' (without sudo) and it worked perfectly.
I had the same problem, using Ubuntu 17.10.
Note: You do not need to, and should not, use sudo for the installation.
I resolved this by performing the following:
Uninstall any previously attempted installed of the functions emulator.
npm uninstall -g @google-cloud/functions-emulator
and to make sure:
yarn global remove @google-cloud/functions-emulator
Delete all files in ~/.config/configstore/@google-cloud/functions-emulator. Note that there are some hidden files in this directory.
rm -rf ~/.config/configstore/@google-cloud/functions-emulator
Install nvm (node version manager) by following the instructions here:
Use nvm to install a specific version of node - at the time of writing, the Google Cloud Function Emulator (version 1.0.0-alpha.29) specifically requires 6.11.5.
nvm install 6.11.5
Install the Google Cloud Platform SDK:
Reinstall the functions emulator:
npm install -g @google-cloud/functions-emulator
Start the emulator to verify installation has succeeded:
functions start
IMPORTANT: Subsequently, when attempting to create a function that can be tested locally or deployed to Google Cloud, you should use the firebase init functions command within your project, and allow this to install dependencies via npm. A walkthrough of creating a test function with Firebase can be found here:
