# firebase/firebase-js-sdk

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5,125 stars · 1,022 forks · TypeScript · NOASSERTION

## Links

- GitHub: https://github.com/firebase/firebase-js-sdk
- Homepage: https://firebase.google.com/docs/web/setup
- awesome-repositories: https://awesome-repositories.com/repository/firebase-firebase-js-sdk.md

## Topics

`firebase` `firebase-auth` `firebase-authentication` `firebase-cloud-messaging` `firebase-database` `firebase-db` `firebase-messaging` `firebase-realtime-database` `firebase-storage` `javascript` `real-time` `typescript`

## Description

This is a backend-as-a-service SDK that connects web and mobile applications to a suite of cloud services. It provides a unified interface for managing user identity, executing serverless logic, and handling cloud object storage.

The toolkit is characterized by its real-time data synchronization, which allows NoSQL document data to stay consistent across multiple clients with built-in offline persistence. It facilitates secure user access through a variety of identity providers and manages serverless function invocation to execute backend logic in response to HTTPS requests or database events.

The SDK covers a broad range of operational capabilities, including NoSQL and relational database management, crash monitoring, and user behavior analytics. It also provides tools for remote application configuration, targeted push notifications, and the integration of large language models for AI-powered features.

The project is implemented in TypeScript and provides language-specific libraries that abstract REST and WebSocket APIs into high-level methods.

## Tags

### Mobile Development

- [Cloud Backend Connectivity](https://awesome-repositories.com/f/mobile-development/cloud-backend-connectivity.md) — Connects web and mobile applications to a unified suite of cloud databases, authentication, and hosting services.
- [Project Configuration Linking](https://awesome-repositories.com/f/mobile-development/remote-app-configurations/project-configuration-linking.md) — Associates client applications with specific cloud projects using unique configuration objects and API keys.
- [Quality Assurance](https://awesome-repositories.com/f/mobile-development/automation-qa/quality-assurance.md) — Runs applications on physical devices to capture diagnostic logs, videos, and screenshots for quality assurance. ([source](https://firebase.google.com/docs/run))
- [Crash-Analytics Correlation](https://awesome-repositories.com/f/mobile-development/data-backend/crash-analytics-correlation.md) — Links crash reports with user behavioral analytics to identify the sequence of events leading to a failure. ([source](https://firebase.google.com/docs/analytics))
- [Pre-release App Distributions](https://awesome-repositories.com/f/mobile-development/pre-release-app-distributions.md) — Delivers application builds to trusted testers via a console or CLI without requiring SDK installation. ([source](https://firebase.google.com/docs/app-distribution))
- [Remote App Configurations](https://awesome-repositories.com/f/mobile-development/remote-app-configurations.md) — Updates application behavior and appearance over-the-air by changing server-side parameters without requiring a new deployment. ([source](https://firebase.google.com/docs/samples/))

### Artificial Intelligence & ML

- [Language Model Connectivity](https://awesome-repositories.com/f/artificial-intelligence-ml/language-model-connectivity.md) — Provides standard interfaces to connect applications with various external and local large language model providers. ([source](https://firebase.google.com/docs))
- [Generative Logic Integration](https://awesome-repositories.com/f/artificial-intelligence-ml/ai-assistant-integrations/generative-logic-integration.md) — Embeds generative AI capabilities directly into application workflows to automate tasks and responses. ([source](https://firebase.google.com/docs/ios/setup))
- [ML Model Integrations](https://awesome-repositories.com/f/artificial-intelligence-ml/ml-model-integrations.md) — Integrates tuned machine learning models into applications to enhance the overall user experience. ([source](https://firebase.google.com/docs/build))
- [Multimodal Model Integrations](https://awesome-repositories.com/f/artificial-intelligence-ml/multimodal-model-integrations.md) — Integrates multimodal models to process text, images, audio, and video for generative responses. ([source](https://firebase.google.com/docs/ai))

### Data & Databases

- [Cloud Database Clients](https://awesome-repositories.com/f/data-databases/cloud-database-clients.md) — Provides a library for performing real-time synchronization and NoSQL queries with cloud-hosted databases.
- [Cloud Object Storage Clients](https://awesome-repositories.com/f/data-databases/cloud-object-storage-clients.md) — Provides a client-side library for uploading and managing binary files and blobs in scalable cloud buckets.
- [Cloud Object Storage](https://awesome-repositories.com/f/data-databases/file-storage-systems/cloud-object-storage.md) — Provides scalable cloud storage for binary files and blobs with granular access control.
- [Global Database Synchronization](https://awesome-repositories.com/f/data-databases/global-database-synchronization.md) — Synchronizes database state across geographically distributed clients and clusters at a global scale. ([source](https://firebase.google.com/docs))
- [Document Storage](https://awesome-repositories.com/f/data-databases/nosql-databases/nosql-database-querying/document-storage.md) — Provides a flexible NoSQL document database for organizing and storing application data. ([source](https://firebase.google.com/docs/samples))
- [Offline-First Persistence](https://awesome-repositories.com/f/data-databases/offline-first-persistence.md) — Caches data locally to allow reads and writes during network outages with automatic cloud synchronization.
- [Realtime Synchronization](https://awesome-repositories.com/f/data-databases/optimistic-update-management/realtime-synchronization.md) — Uses long-lived connections to push real-time data updates from the cloud to clients via listeners.
- [Real-time Data Synchronization](https://awesome-repositories.com/f/data-databases/real-time-data-synchronization.md) — Keeps local data stores in sync with distributed network state instantly across multiple clients.
- [Document-Based Querying](https://awesome-repositories.com/f/data-databases/search-indexing/complex-search-querying/document-based-querying.md) — Implements querying mechanisms to retrieve filtered results from document-oriented NoSQL databases. ([source](https://firebase.google.com/docs/firestore))
- [User Content Storage](https://awesome-repositories.com/f/data-databases/user-content-storage.md) — Uploads and retrieves user-generated binary files like images and videos in a scalable cloud bucket. ([source](https://firebase.google.com/docs/storage))
- [Atomic Transaction Execution](https://awesome-repositories.com/f/data-databases/data-integration-synchronization/data-integration/database-integrations/atomic-transaction-execution.md) — Performs batch operations and ACID transactions to ensure data consistency across multiple documents. ([source](https://firebase.google.com/docs/firestore))
- [Managed Relational Databases](https://awesome-repositories.com/f/data-databases/relational-database-management-systems/managed-relational-databases.md) — Offers a managed PostgreSQL service for the setup and maintenance of relational data. ([source](https://firebase.google.com/docs/sql-connect))

### Development Tools & Productivity

- [SDK Abstractions](https://awesome-repositories.com/f/development-tools-productivity/sdk-abstractions.md) — Provides high-level SDK abstractions that wrap complex network protocols into simple language-specific methods.
- [AI Coding Assistants](https://awesome-repositories.com/f/development-tools-productivity/ai-coding-assistants.md) — Provides AI-powered coding assistance including natural language querying, code generation, and error decoding. ([source](https://firebase.google.com/docs/ai-assistance))
- [Backend Service Emulators](https://awesome-repositories.com/f/development-tools-productivity/development-environment-management/cloud-service-emulation-interception/cloud-infrastructure-emulation/local-storage-emulators/backend-service-emulators.md) — Provides local implementations of cloud backend services like authentication and databases for integration testing. ([source](https://firebase.google.com/docs/studio))
- [Local Emulation Environments](https://awesome-repositories.com/f/development-tools-productivity/local-emulation-environments.md) — Simulates production cloud environments on a local machine for testing database and authentication logic.
- [Local Function Developments](https://awesome-repositories.com/f/development-tools-productivity/local-function-execution/local-function-developments.md) — Enables the development, testing, and iteration of background and HTTP functions using a local environment. ([source](https://firebase.google.com/docs/emulator-suite))

### DevOps & Infrastructure

- [Backend-as-a-Service](https://awesome-repositories.com/f/devops-infrastructure/cloud-infrastructure/cloud-computing-serverless/backend-as-a-service.md) — Provides a comprehensive toolkit for connecting applications to serverless databases, storage, and identity management.
- [Backend-as-a-Service Integrations](https://awesome-repositories.com/f/devops-infrastructure/devops/backend-as-a-service-platforms/backend-as-a-service-integrations.md) — Provides a unified SDK to integrate client applications with managed backend-as-a-service cloud platforms. ([source](https://firebase.google.com/docs/libraries/))
- [Serverless Function Executions](https://awesome-repositories.com/f/devops-infrastructure/event-driven-triggers/serverless-function-executions.md) — Executes discrete compute functions automatically based on system events or HTTPS requests.
- [Serverless Function Invokers](https://awesome-repositories.com/f/devops-infrastructure/event-driven-triggers/serverless-function-invokers.md) — Provides a tool to trigger and execute remote serverless backend logic via HTTPS requests or event-driven triggers.
- [Serverless Backend Hosting](https://awesome-repositories.com/f/devops-infrastructure/serverless-backend-hosting.md) — Hosts scalable backend APIs and webhooks in a serverless cloud environment. ([source](https://firebase.google.com/docs/functions))
- [Local Emulation Testing](https://awesome-repositories.com/f/devops-infrastructure/cloud-function-invocation-tools/local-emulation-testing.md) — Simulates cloud environments and invokes functions with test data using a local emulator. ([source](https://firebase.google.com/docs/build))
- [Phone Number Authentications](https://awesome-repositories.com/f/devops-infrastructure/cloud-infrastructure/cloud-computing-serverless/backend-as-a-service/authentication-as-a-service/phone-number-authentications.md) — Implements phone-number-based authentication flows using verification codes sent via mobile carriers. ([source](https://firebase.google.com/docs/phone-number-verification))
- [Firebase Hosting Deployments](https://awesome-repositories.com/f/devops-infrastructure/deployment-management-strategies/automation-and-tooling/deployment-tooling/static-site-hosting/firebase-hosting-deployments.md) — Uploads static web files to a global content delivery network for secure serving. ([source](https://firebase.google.com/docs/hosting))
- [Project Management](https://awesome-repositories.com/f/devops-infrastructure/project-management.md) — Provides a command-line interface for managing cloud projects and their associated configurations and assets. ([source](https://firebase.google.com/docs/build))
- [Gradual Rollouts](https://awesome-repositories.com/f/devops-infrastructure/release-lifecycle-management/feature-orchestration/gradual-rollouts.md) — Enables staged functionality releases to targeted user segments using feature flags and stability monitoring. ([source](https://firebase.google.com/docs/remote-config))

### Security & Cryptography

- [API Access Security](https://awesome-repositories.com/f/security-cryptography/api-access-security.md) — Verifies that incoming requests originate from authentic app instances to protect backend resources from unauthorized access. ([source](https://firebase.google.com/docs/unity/setup))
- [App Integrity Validations](https://awesome-repositories.com/f/security-cryptography/app-integrity-validations.md) — Ensures that requests to backend services originate from an unmodified, authentic version of the application. ([source](https://firebase.google.com/docs/ios/setup))
- [Granular Access Controls](https://awesome-repositories.com/f/security-cryptography/granular-access-controls.md) — Defines granular, server-side security rules to authorize data operations based on authentication and data patterns. ([source](https://firebase.google.com/docs/rules))
- [Device Attestation](https://awesome-repositories.com/f/security-cryptography/identity-access-management/access-control/data-resource-permissions/key-level-access-controls/client-authentication/device-attestation.md) — Attests the identity and integrity of the requesting client device to prevent abuse and unauthorized access. ([source](https://firebase.google.com/support/guides/environments_js-sdk))
- [Identity Token Verifications](https://awesome-repositories.com/f/security-cryptography/identity-authentication/mobile-authentication/firebase-integration/identity-token-verifications.md) — Validates authentication tokens issued by the identity platform to secure API routes and verify users. ([source](https://firebase.google.com/docs/admin/setup))
- [Identity Providers](https://awesome-repositories.com/f/security-cryptography/oauth2-client-management/identity-providers.md) — Implements a client for managing user authentication and identity verification using OAuth2 and OIDC protocols.
- [Identity-Based File Access Control](https://awesome-repositories.com/f/security-cryptography/remote-access-security/secure-file-access/identity-based-file-access-control.md) — Controls file access permissions in cloud storage based on user identity, filename, or content type metadata. ([source](https://firebase.google.com/docs/storage))
- [Secrets Management](https://awesome-repositories.com/f/security-cryptography/secrets-management.md) — Secures sensitive API keys and configuration data using a dedicated secret management service. ([source](https://firebase.google.com/docs/app-hosting))
- [Expression-Based Access Rules](https://awesome-repositories.com/f/security-cryptography/security-and-access-control/expression-based-access-rules.md) — Evaluates server-side security rules using logical expressions to restrict data access based on user identity.
- [Session Token Validation](https://awesome-repositories.com/f/security-cryptography/session-authentication/session-token-validation.md) — Generates and verifies authentication tokens to manage privileged sessions and secure access to cloud resources.
- [User Authentications](https://awesome-repositories.com/f/security-cryptography/user-authentications.md) — Manages user identity and access control to ensure only authorized users interact with specific data. ([source](https://firebase.google.com/docs/unity/setup))
- [User Identity Management](https://awesome-repositories.com/f/security-cryptography/user-identity-management.md) — Manages user registration, secure sign-in, and access control using OAuth2, SAML, and multi-factor authentication.
- [Enterprise Identity Providers](https://awesome-repositories.com/f/security-cryptography/enterprise-identity-providers.md) — Enables authentication via enterprise-grade protocols including SAML and OpenID Connect. ([source](https://firebase.google.com/docs/auth))
- [External Identity Provider Integrations](https://awesome-repositories.com/f/security-cryptography/identity-authentication/mobile-authentication/firebase-integration/external-identity-provider-integrations.md) — Connects existing external sign-in systems to the identity platform to enable access to cloud services. ([source](https://firebase.google.com/docs/auth))
- [Multi-Factor Authentication](https://awesome-repositories.com/f/security-cryptography/multi-factor-authentication.md) — Provides secondary authentication methods such as SMS verification to enhance user account security. ([source](https://firebase.google.com/docs/auth))
- [OAuth2 Providers](https://awesome-repositories.com/f/security-cryptography/oauth2-providers.md) — Provides integration with OAuth2 providers to manage authorization flows and access tokens for secure user sessions. ([source](https://firebase.google.com/docs/admin/setup))
- [Server-Side Logic Isolation](https://awesome-repositories.com/f/security-cryptography/server-side-logic-isolation.md) — Isolates sensitive business logic and credentials on the server to prevent client-side tampering. ([source](https://firebase.google.com/docs/functions))
- [Time-Limited Download URLs](https://awesome-repositories.com/f/security-cryptography/time-limited-download-urls.md) — Generates temporary, secure URLs for sharing and downloading cloud-stored objects. ([source](https://firebase.google.com/docs/storage/web/download-files))
- [User Account Management](https://awesome-repositories.com/f/security-cryptography/user-account-management.md) — Provides tools for administrative management of user profiles, email updates, and session cookie control. ([source](https://firebase.google.com/docs/admin/setup))

### Software Engineering & Architecture

- [Remote Function Invocation](https://awesome-repositories.com/f/software-engineering-architecture/remote-function-invocation.md) — Enables triggering of remote serverless functions from the client to perform secure or computationally heavy operations. ([source](https://firebase.google.com/docs/ios/setup))
- [Server-Side Logic Frameworks](https://awesome-repositories.com/f/software-engineering-architecture/server-side-logic-frameworks.md) — Executes custom backend business logic and server-side functions outside of the client environment. ([source](https://firebase.google.com/docs))
- [Serverless Project Deployments](https://awesome-repositories.com/f/software-engineering-architecture/project-configuration/deployment-project-definitions/serverless-project-deployments.md) — Pushes local application updates and project configurations to a serverless platform via a CLI. ([source](https://firebase.google.com/docs/projects/learn-more))

### System Administration & Monitoring

- [User Behavior Analytics](https://awesome-repositories.com/f/system-administration-monitoring/user-behavior-analytics.md) — Tracks and analyzes user interactions and activity across web and mobile environments to measure engagement. ([source](https://firebase.google.com/docs/ios/setup))
- [User Interaction Recording](https://awesome-repositories.com/f/system-administration-monitoring/user-interaction-recording.md) — Records and reports on distinct user interactions and feature access to provide insights into application behavior. ([source](https://firebase.google.com/docs/analytics))
- [Alert Thresholds](https://awesome-repositories.com/f/system-administration-monitoring/alert-thresholds.md) — Sets numerical limits and rules that trigger notifications when critical performance metrics exceed predefined thresholds. ([source](https://firebase.google.com/docs/perf-mon))
- [Crash Reporters](https://awesome-repositories.com/f/system-administration-monitoring/diagnostic-tools/diagnostics/failure-analysis-tools/crash-reporters.md) — Groups related crashes using stack trace analysis to identify and prioritize stability problems. ([source](https://firebase.google.com/docs/crashlytics))
- [Root Cause Analysis](https://awesome-repositories.com/f/system-administration-monitoring/diagnostic-tools/diagnostics/failure-analysis-tools/crash-reporters/root-cause-analysis.md) — Analyzes crash reports using AI to identify root causes and provide actionable fix suggestions. ([source](https://firebase.google.com/docs/ai-assistance/gemini-in-firebase))
- [Dimension-Based Performance Analysis](https://awesome-repositories.com/f/system-administration-monitoring/monitoring-and-observability/observability-platforms/metric-performance-monitors/dimension-based-performance-analysis.md) — Segments performance metrics by user attributes such as device, OS, and geography to identify group-specific issues. ([source](https://firebase.google.com/docs/perf-mon))
- [Automatic Baseline Tracking](https://awesome-repositories.com/f/system-administration-monitoring/performance-observer-tracking/automatic-baseline-tracking.md) — Collects baseline data on startup and page load times automatically without requiring manual instrumentation. ([source](https://firebase.google.com/docs/perf-mon))
- [Custom Trace Instrumentation](https://awesome-repositories.com/f/system-administration-monitoring/performance-tracing-platforms/custom-trace-instrumentation.md) — Measures execution time of specific code blocks to analyze the performance of particular user flows. ([source](https://firebase.google.com/docs/perf-mon))
- [Stability Regression Alerting](https://awesome-repositories.com/f/system-administration-monitoring/stability-regression-alerting.md) — Sends real-time notifications for new or regressing stability issues through configurable channels. ([source](https://firebase.google.com/docs/crashlytics))
- [User Interaction Event Logging](https://awesome-repositories.com/f/system-administration-monitoring/user-interaction-event-logging.md) — Generates behavioral reports based on custom-defined interaction triggers to understand user application usage. ([source](https://firebase.google.com/docs/run))

### Part of an Awesome List

- [Crash Monitoring](https://awesome-repositories.com/f/awesome-lists/devtools/crash-monitoring.md) — Captures and reports fatal crashes and non-fatal errors in real time to prioritize stability fixes. ([source](https://firebase.google.com/docs/samples))

### Business & Productivity Software

- [A/B Testing](https://awesome-repositories.com/f/business-productivity-software/a-b-testing.md) — Executes and analyzes A/B tests to optimize user experience and scale marketing experiments. ([source](https://firebase.google.com/docs/run))
- [Audience Management Tools](https://awesome-repositories.com/f/business-productivity-software/audience-management-tools.md) — Defines and manages user groups based on device data, custom events, and properties for targeted features. ([source](https://firebase.google.com/docs/ads))
- [User Segment Parameterization](https://awesome-repositories.com/f/business-productivity-software/customer-segmentation/user-segment-parameterization.md) — Delivers variation in application experience based on user attributes such as language, region, or app version. ([source](https://firebase.google.com/docs/remote-config))
- [Beta Tester Groups](https://awesome-repositories.com/f/business-productivity-software/group-management/beta-tester-groups.md) — Organizes external testers into cohorts for targeted distribution of pre-release application builds. ([source](https://firebase.google.com/docs/app-distribution))

### Networking & Communication

- [System Event Triggers](https://awesome-repositories.com/f/networking-communication/communication-platforms-services/messaging-notification-systems/messaging-services/event-subscriptions/system-event-triggers.md) — Automatically triggers the execution of specific code in response to events within the cloud ecosystem. ([source](https://firebase.google.com/docs/functions))
- [Cloud Push Notification Deliveries](https://awesome-repositories.com/f/networking-communication/communication-platforms-services/messaging-notification-systems/messaging-services/notification-delivery-services/push-notification-providers/cloud-push-notification-deliveries.md) — Provides cloud-based push notification delivery to engage users on mobile devices even when the app is not running. ([source](https://firebase.google.com/docs/samples/))
- [Targeted Messaging](https://awesome-repositories.com/f/networking-communication/communication-platforms-services/messaging-notification-systems/targeted-messaging.md) — Implements logic for routing messages to specific individuals, curated groups, or topic subscribers based on user segments. ([source](https://firebase.google.com/docs/cloud-messaging))
- [In-App Messages](https://awesome-repositories.com/f/networking-communication/in-app-messages.md) — Provides a system to deliver targeted messages to users while they are actively interacting with the application. ([source](https://firebase.google.com/docs/ios/setup))
- [Direct Backend Downloads](https://awesome-repositories.com/f/networking-communication/remote-file-downloads/progress-tracking-file-downloads/cloud-file-downloads/direct-backend-downloads.md) — Retrieves file content as blobs or streams directly from the storage backend to the browser. ([source](https://firebase.google.com/docs/storage/web/download-files))

### Testing & Quality Assurance

- [CI Integration Testing](https://awesome-repositories.com/f/testing-quality-assurance/ci-integration-testing.md) — Integrates automated device tests into CI/CD pipelines to verify application stability. ([source](https://firebase.google.com/docs/test-lab))
- [Device Cloud Execution](https://awesome-repositories.com/f/testing-quality-assurance/test-suite-execution/device-cloud-execution.md) — Executes test suites across a remote cloud of real and virtual mobile devices for compatibility verification. ([source](https://firebase.google.com/docs/test-lab))

### User Interface & Experience

- [Authentication User Interfaces](https://awesome-repositories.com/f/user-interface-experience/authentication-user-interfaces.md) — Provides a pre-built, customizable authentication interface that handles complex sign-in and recovery flows. ([source](https://firebase.google.com/docs/auth))
- [Tester Feedback Collection](https://awesome-repositories.com/f/user-interface-experience/in-app-feedback-widgets/tester-feedback-collection.md) — Collects qualitative feedback and stability data from beta testers within pre-release application builds. ([source](https://firebase.google.com/docs/app-distribution))

### Web Development

- [Type-Safe Client Generators](https://awesome-repositories.com/f/web-development/api-client-generators/type-safe-client-generators.md) — Generates strongly typed client libraries from schemas to ensure data validation between frontend and backend. ([source](https://firebase.google.com/docs/sql-connect))
- [Managed Web Application Hosting](https://awesome-repositories.com/f/web-development/managed-web-application-hosting.md) — Deploys and serves static and dynamic web content through a managed global infrastructure. ([source](https://firebase.google.com/docs))