expo-firebase-functions

expo-firebase is still in RC and therefore subject to breaking changings. Be sure to run yarn upgrade and cd ios; pod install when upgrading.

expo-firebase-functions

Full documentation

Installation

Now, you need to install the package from npm registry.

npm install expo-firebase-functions or yarn add expo-firebase-functions

iOS

Cocoapods

If you're using Cocoapods, add the dependency to your Podfile:

pod 'EXFirebaseFunctions', path: '../node_modules/expo-firebase-functions/ios'

and run pod install.

Android

1. Append the following lines to android/settings.gradle:

   include ':expo-firebase-functions'
   project(':expo-firebase-functions').projectDir = new File(rootProject.projectDir, '../node_modules/expo-firebase-functions/android')
   

   and if not already included

   include ':expo-core'
   project(':expo-core').projectDir = new File(rootProject.projectDir, '../node_modules/expo-core/android')
   
   include ':expo-firebase-app'
   project(':expo-firebase-app').projectDir = new File(rootProject.projectDir, '../node_modules/expo-firebase-app/android')
   

2. Insert the following lines inside the dependencies block in android/app/build.gradle:

   api project(':expo-firebase-functions')
   

   and if not already included

   api project(':expo-core')
   api project(':expo-firebase-app')
   

3. Include the module in your expo packages: ./android/app/src/main/java/host/exp/exponent/MainActivity.java

   /*
   * At the top of the file.
   * This is automatically imported with Android Studio, but if you are in any other editor you will need to manually import the module.
   */
   import expo.modules.firebase.app.FirebaseAppPackage; // This should be here for all Expo Firebase features.
   import expo.modules.firebase.functions.FirebaseFunctionsPackage;
   
   // Later in the file...
   
   @Override
   public List<Package> expoPackages() {
     // Here you can add your own packages.
     return Arrays.<Package>asList(
       new FirebaseAppPackage(), // This should be here for all Expo Firebase features.
       new FirebaseFunctionsPackage() // Include this.
     );
   }
   

Usage

import React from 'react';
import { View } from 'react-native';
import firebase from 'expo-firebase-app';

// API can be accessed with: firebase.functions();

export default class DemoView extends React.Component {
  async componentDidMount() {
    // ... initialize firebase app

    const httpsCallable = firebase.functions().httpsCallable('myFooBarFn');

    try {
      const { data } = await httpsCallable({ some: 'args' });
      console.log(data.someResponse); // hello world
    } catch ({ code, message, details }) {
      console.log(code); // invalid-argument
      console.log(message); // Your error message goes here
      console.log(details.foo); // bar
    }
  }
  render() {
    return <View />;
  }
}