Auth

Use Supabase Auth with React

Learn how to use Supabase Auth with React.js.

1

Create a new Supabase project

Launch a new project in the Supabase Dashboard.

Your new database has a table for storing your users. You can see that this table is currently empty by running some SQL in the SQL Editor.

SQL_EDITOR

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select * from auth.users;

2

Create a React app

Create a React app using the create-react-app command.

Terminal

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npx create-react-app my-app

3

Install the Supabase client library

The fastest way to get started is to use Supabase's auth-ui-react library which provides a convenient interface for working with Supabase Auth from a React app.

Navigate to the React app and install the Supabase libraries.

Terminal

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cd my-app && npm install @supabase/supabase-js @supabase/auth-ui-react @supabase/auth-ui-shared

4

Set up your login component

In index.js, create a Supabase client using your Project URL and public API (anon) key.

You can configure the Auth component to display whenever there is no session inside supabase.auth.getSession()

src/index.js

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import './index.css'
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import { useState, useEffect } from 'react'
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import { createClient } from '@supabase/supabase-js'
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import { Auth } from '@supabase/auth-ui-react'
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import { ThemeSupa } from '@supabase/auth-ui-shared'
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const supabase = createClient('https://<project>.supabase.co', '<your-anon-key>')
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export default function App() {
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const [session, setSession] = useState(null)
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useEffect(() => {
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supabase.auth.getSession().then(({ data: { session } }) => {
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setSession(session)
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})
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const {
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data: { subscription },
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} = supabase.auth.onAuthStateChange((_event, session) => {
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setSession(session)
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})
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return () => subscription.unsubscribe()
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}, [])
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if (!session) {
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return (<Auth supabaseClient={supabase} appearance={{ theme: ThemeSupa }} />)
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}
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else {
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return (<div>Logged in!</div>)
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}
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}

5

Start the app

Start the app, go to http://localhost:3000 in a browser, and open the browser console and you should be able to log in.

Terminal

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npm start