How to detect if environment is development or production with Firebase Cloud Functions?

Question

How can I detect if my server environment is development or production with Firebase Cloud Functions?

I need something like this:

if(process.env.NODE_ENV === 'development'){

   //DO STUFF SPECIFIC TO DEV ENVIRONMENT

}
else if(process.env.NODE_ENV === 'production'){

   //DO STUFF SPECIFIC TO PRODUCTION ENVIRONMENT

}

Answer 1

process.env.FUNCTIONS_EMULATOR

At process.env, on firebase functions projects, there is a boolean variable called FUNCTIONS_EMULATOR, which indicates if the process is running on an emulator or on server.

this is enough to determine if environment is dev or production.

process.env.FUNCTIONS_EMULATOR === true

Obs: In some environments the variable might be a String 'true' instead of Boolean true