katharinepadilha

#import <Firebase.h>
#import "RNFirebaseNotifications.h"
#import "RNFirebaseMessaging.h"

//...

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

katharinepadilha

platform :ios, '9.0'

target 'yourapp' do
  # ...
  pod 'Firebase/Core', '~> 6.2.0'
  pod 'Firebase/Messaging', '~> 6.2.0'

  # ...
end

katharinepadilha

//...

import io.invertase.firebase.messaging.RNFirebaseMessagingPackage;
import io.invertase.firebase.notifications.RNFirebaseNotificationsPackage;

//...

protected List<ReactPackage> getPackages() {
  @SuppressWarnings("UnnecessaryLocalVariable")
  List<ReactPackage> packages = new PackageList(this).getPackages();

katharinepadilha

buildscript {
    //...
    dependencies {
       //...
        classpath 'com.google.gms:google-services:4.2.0'
    //...
    }
}

//...

katharinepadilha

//...
dependencies {
    //...
    implementation "com.google.android.gms:play-services-base:17.0.0"
    implementation "com.google.firebase:firebase-core:17.0.1"
    implementation "com.google.firebase:firebase-messaging:19.0.0"
    implementation 'me.leolin:ShortcutBadger:1.1.21@aar' <-- Add this line if you wish to use badge on Android
    //...
}

katharinepadilha

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.VIBRATE" />

...

<service android:name="io.invertase.firebase.messaging.RNFirebaseMessagingService">
    <intent-filter>
      <action android:name="com.google.firebase.MESSAGING_EVENT" />
    </intent-filter>

katharinepadilha

//...
async getToken() {
    let fcmToken = await AsyncStorage.getItem('fcmToken');
    if (!fcmToken) {
        fcmToken = await firebase.messaging().getToken();
        if (fcmToken) {
            await AsyncStorage.setItem('fcmToken', fcmToken);
        }
    }
}

katharinepadilha

Donwload ESLint and Prettier extensions from VSCode store
Place the code bellow in your Settings.json

{
  "emmet.includeLanguages": {
    "javascript": "javascriptreact"
  },
  "[javascript]": {
    "editor.formatOnSave": false
  },