@smart-auth/fetch

Fetch API wrapper for the Smart Auth SDK ecosystem.

What it does

@smart-auth/fetch wraps the native fetch() API with automatic authentication. Your access token is injected into every request. If a 401 comes back, it silently refreshes and retries. Zero config, zero boilerplate.

Features

• 🔑 Auto token injection — Authorization header added to every request
• 🔄 Silent 401 refresh — Expired token? Refreshed and retried automatically
• 🌐 Base URL support — Prefix all requests with a base URL
• 📦 Lightweight — ~1KB, wraps native fetch, no dependencies

Installation

npm install @smart-auth/fetch @smart-auth/core

Quick Start

import { createAuth } from '@smart-auth/core';
import { createSmartFetch } from '@smart-auth/fetch';

const auth = createAuth({
  apiBaseUrl: '/api',
  refresh: { endpoint: '/auth/refresh' },
});

const smartFetch = createSmartFetch({ auth, baseUrl: '/api' });

// Use like normal fetch — auth is automatic
const response = await smartFetch('/users');
const users = await response.json();

// POST requests work too
const newUser = await smartFetch('/users', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({ name: 'Alice' }),
});

Part of Smart Auth SDK

| Package | Description | | -------------------------------------------------------------------------- | ------------------------------ | | @smart-auth/core | Core auth engine (required) | | @smart-auth/react | React Provider & hooks | | @smart-auth/axios | Axios interceptors alternative | | @smart-auth/express | Express middleware |

License

MIT © Durjoy Ghosh