Firebase: Error parsing triggers: Cannot find module 'request-promise' simple cloud function

If you want to use an npm module in your Cloud Function, cd to the functions directory and run the command npm install request-promise or whatever the module is named. This will add the module to your package.json file. Then, when you run firebase deploy, the module will be available to your code running in Google's cloud. If you try to use a module that's not listed in package.json, your code will fail.

I had the same issue and fixed it installing both, request and request-promise. Go to the directory where your functions live and execute:

npm install --save request request-promise

The --save will take care of updating your package.json. Then redeploy and it should work.

Its not able to find request-promise because it is not installed. It is separate from firebase so you need to add it to your package.json. I would also add the request library.

Add the below two lines in your dependencies and run an npm install.

  "request": "^2.x",
  "request-promise": "^1.x"