javascript - How to set functions region for React Native Firebase - Stack Overflow

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I have a react native app with react-native-firebase and I'm trying to run a callable https firebase function which is deployed to a custom region.

I've read that firebase.app().functions("MY-REGION") so I tried the following:

import { firebase } from "@react-native-firebase/database"
import functions from "@react-native-firebase/functions"

firebase.app().functions("MY-REGION")

But If I run that I get this error:

Error: You attempted to use 
"firebase.app('[DEFAULT]').functions" but this
module could not be found.

Ensure you have installed and imported the
'@react-native-firebase/functions' package

The functions package is installed.

If I remove the @react-native-firebase/functions import the error stays the same.

How can I specify the region for firebase https functions in react-native-firebase?

---

More attempts:

firebase.initializeApp({
   ...options
})

firebase.app().functions("MY-REGION")

And that says Error: Firebase App named '[DEFAULT]' already exists

firebase.initializeApp({
   ...options
}, "APP_NAME")

firebase.app("APP_NAME").functions("MY-REGION")

Gives Error: No firebase App 'APP_NAME' has been created - call firebase.initializeApp()

---

I hope I'm missing something trivial.

I have a react native app with react-native-firebase and I'm trying to run a callable https firebase function which is deployed to a custom region.

I've read that firebase.app().functions("MY-REGION") so I tried the following:

import { firebase } from "@react-native-firebase/database"
import functions from "@react-native-firebase/functions"

firebase.app().functions("MY-REGION")

But If I run that I get this error:

Error: You attempted to use 
"firebase.app('[DEFAULT]').functions" but this
module could not be found.

Ensure you have installed and imported the
'@react-native-firebase/functions' package

The functions package is installed.

If I remove the @react-native-firebase/functions import the error stays the same.

How can I specify the region for firebase https functions in react-native-firebase?

---

More attempts:

firebase.initializeApp({
   ...options
})

firebase.app().functions("MY-REGION")

And that says Error: Firebase App named '[DEFAULT]' already exists

firebase.initializeApp({
   ...options
}, "APP_NAME")

firebase.app("APP_NAME").functions("MY-REGION")

Gives Error: No firebase App 'APP_NAME' has been created - call firebase.initializeApp()

---

I hope I'm missing something trivial.

• javascript
• firebase
• google-cloud-functions
• react-native-firebase

Share Improve this question Follow edited Jun 13, 2020 at 20:43 Frank van Puffelen 601k8585 gold badges890890 silver badges860860 bronze badges asked Jun 13, 2020 at 20:31 GuglieGuglie 2,47122 gold badges2929 silver badges5151 bronze badges

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1 Answer 1

Sorted by: Reset to default 10

A solution is to change the functions import from import functions from "..." to import "...":

import { firebase } from "@react-native-firebase/database"
import "@react-native-firebase/functions" // <--

// call a https firebase function
firebase.app().functions("MY-REGION").httpsCallable('MyFunction')()

Note that MY-REGION should be set to the region shown in the firebase functions dashboard for the selected httpsCallable function.

The fix I found was indeed quite trivial...
I've shared it here so it can be useful for others, but better solutions are wele!

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