• Documentation: https://supabase.com/docs/reference/javascript/start
• TypeDoc: https://supabase.github.io/supabase-js/v2/

First of all, you need to install the library:

npm install @supabase/supabase-js

Then you're able to import the library and establish the connection with the database:

import { createClient } from '@supabase/supabase-js'

// Create a single supabase client for interacting with your database
const supabase = createClient('https://xyzcompany.supabase.co', 'public-anon-key')

You can use plain <script>s to import supabase-js from CDNs, like:

<script src="https://cdn.jsdelivr.net/npm/@supabase/supabase-js@2"></script>

or even:

<script src="https://unpkg.com/@supabase/supabase-js@2"></script>

Then you can use it from a global supabase variable:

<script>
  const { createClient } = supabase
  const _supabase = createClient('https://xyzcompany.supabase.co', 'public-anon-key')

  console.log('Supabase Instance: ', _supabase)
  // ...
</script>

You can use <script type="module"> to import supabase-js from CDNs, like:

<script type="module">
  import { createClient } from 'https://cdn.jsdelivr.net/npm/@supabase/supabase-js/+esm'
  const supabase = createClient('https://xyzcompany.supabase.co', 'public-anon-key')

  console.log('Supabase Instance: ', supabase)
  // ...
</script>

You can use supabase-js in the Deno runtime via JSR:

import { createClient } from 'jsr:@supabase/supabase-js@2'

supabase-js uses the cross-fetch library to make HTTP requests, but an alternative fetch implementation can be provided as an option. This is most useful in environments where cross-fetch is not compatible, for instance Cloudflare Workers:

import { createClient } from '@supabase/supabase-js'

// Provide a custom `fetch` implementation as an option
const supabase = createClient('https://xyzcompany.supabase.co', 'public-anon-key', {
  global: {
    fetch: (...args) => fetch(...args),
  },
})

We are building the features of Firebase using enterprise-grade, open source products. We support existing communities wherever possible, and if the products don’t exist we build them and open source them ourselves. Thanks to these sponsors who are making the OSS ecosystem better for everyone.