@firebase/app

What is @firebase/app?

The @firebase/app package is the core module of the Firebase JavaScript SDK. It initializes and configures the Firebase app, allowing other Firebase services to be used in web and Node.js applications. It provides the necessary infrastructure to manage the communication between your app and Firebase services.

What are @firebase/app's main functionalities?

Initialization

This feature allows you to initialize your Firebase application using your project's configuration. The configuration includes keys and identifiers for your project.

import { initializeApp } from 'firebase/app';
const firebaseConfig = {
  apiKey: 'API_KEY',
  authDomain: 'PROJECT_ID.firebaseapp.com',
  projectId: 'PROJECT_ID',
  storageBucket: 'PROJECT_ID.appspot.com',
  messagingSenderId: 'SENDER_ID',
  appId: 'APP_ID'
};
const app = initializeApp(firebaseConfig);

Accessing Firebase Services

After initializing the Firebase app, you can access various Firebase services such as authentication and Firestore database by importing and initializing them with the app instance.

import { getAuth } from 'firebase/auth';
import { getFirestore } from 'firebase/firestore';
const auth = getAuth(app);
const db = getFirestore(app);

Other packages similar to @firebase/app

aws-amplify

AWS Amplify is a development platform for building secure, scalable mobile and web applications. It is similar to @firebase/app as it provides a way to easily integrate with AWS services. However, it is more focused on integrating with AWS ecosystem rather than providing a broad range of backend services like Firebase.

parse

Parse is an open-source application stack and framework that helps in building mobile and web applications. It is similar to Firebase in providing backend services but is self-hostable and more customizable, which contrasts with Firebase's managed service approach.

README

@firebase/app

This is the primary entrypoint to the Firebase JS SDK. All apps using firebase will need this package. Other @firebase packages are typically mounted on to the namespaces exposed by this package.

Installation

You can install this package by running the following in your project:

$ npm install @firebase/app

Usage

You can then use the firebase namespace exposed by this package as illustrated below:

ES Modules

Referencing the firebase export:

import { firebase } from '@firebase/app';

// Do stuff w/ `firebase`

Referencing the default export:

import firebase from '@firebase/app';

// Do stuff w/ `firebase`

CommonJS Modules

const firebase = require('@firebase/app').default;

// Do stuff with `firebase`

Documentation

For comprehensive documentation please see the Firebase Reference Docs.