@supabase/supabase-js downloads — last 12 months
The @supabase/supabase-js package provides an isomorphic JavaScript SDK for interacting with Supabase, a backend-as-a-service platform built around PostgreSQL. It empowers developers to build applications by offering seamless access to database operations, authentication, real-time subscriptions, storage, and more, all from their client-side or server-side JavaScript projects. This SDK abstracts away the complexities of direct API calls, allowing developers to focus on application logic rather than infrastructure management.
Designed with an emphasis on developer experience and ease of use, the Supabase JS client is tailored for modern web and mobile developers using JavaScript or TypeScript. It aims to provide a cohesive and intuitive interface for accessing the various services offered by Supabase, making it an excellent choice for those transitioning from other BaaS providers or starting new projects that require a robust backend without the overhead of managing servers. Its isomorphic nature means it can be used consistently across different JavaScript environments like browsers, Node.js, and serverless functions.
The library exposes a fluent API for database interactions, including methods for querying data from PostgreSQL tables via the PostgREST API. Developers can perform CRUD operations, filter data, and apply complex logic using familiar JavaScript syntax. For real-time functionality, the SDK enables subscribing to database changes with a simple `supabase.channel().on(...)` pattern, pushing instant updates to connected clients. Authentication is handled through a dedicated `supabase.auth` module, supporting various sign-in methods and session management.
Integration with popular frontend frameworks such as React, Vue, Svelte, and Next.js is straightforward. The client can be initialized globally or per-component, and its composability with libraries like TanStack Query (formerly React Query) is well-supported for data fetching and caching. Its compatibility with Node.js also allows for server-side logic, including use within backend API routes or serverless functions, enabling consistent data access patterns across the full stack. The SDK is built with TypeScript, providing excellent type safety for developers using typed JavaScript.
With a substantial weekly download count of 19.4 million and a relatively contained unpacked size of 646.4 kB, with a gzipped bundle size of 56.0 kB, the SDK strikes a balance between feature richness and performance. The last updated date of 2026-06-02 suggests an active development and maintenance cycle. Developers should note that while the bundle size is efficient, extensive use of its features across a single application might still impact initial load times, though lazy loading and tree-shaking can mitigate this.
While the SDK offers comprehensive features, it's important to recognize its tight integration with the Supabase ecosystem. For highly specialized database requirements that extend far beyond standard relational operations, or when a completely custom backend architecture is mandated, developers might find themselves outside the idiomatic usage patterns of Supabase. In such niche cases, direct interaction with PostgreSQL or employing a more traditional ORM might be considered, although Supabase's client is designed to simplify common backend tasks effectively.
- When building a new web or mobile application requiring a managed PostgreSQL database and an integrated auth system.
- When needing to implement real-time features, such as live chat or collaborative editing, using database change subscriptions.
- When you want to leverage a client-side SDK for database reads and writes via PostgREST, enabling dynamic data fetching in frameworks like React, Vue, or Svelte.
- When integrating server-side logic in Node.js environments, such as API routes in Next.js, for secure data access and business logic.
- When managing user authentication flows, including email/password sign-up, social logins, and magic links, through a unified API.
- When interacting with Supabase Storage for file uploads, downloads, and management directly from your JavaScript application.
- When requiring an isomorphic solution that works consistently in both browser and Node.js environments.
- If your application only needs simple client-side state management — using built-in browser APIs or a lightweight state library for the frontend would be more appropriate.
- If you require absolute control over the database query layer and need to use complex, database-specific SQL features not directly exposed by PostgREST.
- When migrating an existing, complex enterprise application with a highly customized ORM and database schema, as retrofitting might be more challenging than building anew.
- If you are building a backend service that solely focuses on complex background job processing without requiring a database or real-time features – dedicated job queue solutions might be more suitable.
- When your primary need is a simple REST API for a few static data points – a more lightweight API framework could be sufficient and result in a smaller footprint.
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