⚡ Supabase.js

Note date 21 Jan, 2026
Tags javascript typescript
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Selecting data 

const { data, error } = await supabase.from('posts').select(`*`)

Matching data 

const { data, error } = await supabase
  .from('posts')
  .select(`*`)
  .match({ status: 'active' })

Selecting specific items 

const { data: entry } = await supabase
  .from('posts')
  .select(`*`)
  .match({ id: 1234, status: 'active' })
  .single()

Sorting data 

const { data, error } = await supabase
  .from('posts')
  .select(`*`)
  .order('date', { ascending: false })

      
    
    
const { data, error } = await supabase
  .from('posts')
  .select(`*, journals(name, id)`)

Paginate results 

const getPagination = (page: number, count: number) => {
  const limit = count ? +count : 3
  const from = page ? page * limit : 0
  const to = page ? from + count - 1 : count - 1

  return { from, to }
}

const { from, to } = getPagination(page, 10)
const { data, count } = await supabase
  .from('posts')
  .select('*', { count: 'exact' })
  .order('id', { ascending: true })
  .range(from, to)

Selecting data by date 

const { data, error } = await supabase
  .from('events')
  .select('*')
  .gte('starttime', new Date('2021-07-10').toISOString())
  .lte('starttime', new Date('2021-07-11').toISOString())

Adding data 

const { data, error } = await supabase
  .from('posts')
  .insert([
    {
      title: 'The title',
      body: 'The body',
      owner: session?.user.id,
    },
  ])
  .select() // This is needed to return the inserted data

Generated your schema locally 

npx supabase gen types typescript --project-id \"your-project-id\" --schema public > src/types/supabase.ts

@supabase/ssr

Browser client 

import { Database } from '@/src/types/supabase' // generated from your DB schema
import { createBrowserClient as _createBrowserClient } from '@supabase/ssr'

export const createBrowserClient = () =>
  _createBrowserClient<Database>(
    process.env.NEXT_PUBLIC_SUPABASE_URL!,
    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!
  )

Server client

The newer @supabase/ssr API uses getAll and setAll for cookie handling:

import { createServerClient } from '@supabase/ssr'
import { cookies } from 'next/headers'
import { Database } from '@/types/supabase'

export async function createClient() {
  const cookieStore = await cookies()

  return createServerClient<Database>(
    process.env.NEXT_PUBLIC_SUPABASE_URL!,
    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!,
    {
      cookies: {
        getAll() {
          return cookieStore.getAll()
        },
        setAll(cookiesToSet) {
          try {
            cookiesToSet.forEach(({ name, value, options }) =>
              cookieStore.set(name, value, options)
            )
          } catch {
            // The `setAll` method was called from a Server Component.
            // This can be ignored if you have middleware refreshing
            // user sessions.
          }
        },
      },
    }
  )
}

Middleware client 

import { createServerClient } from '@supabase/ssr'
import { NextResponse, type NextRequest } from 'next/server'

export async function updateSession(request: NextRequest) {
  let supabaseResponse = NextResponse.next({
    request,
  })

  const supabase = createServerClient(
    process.env.NEXT_PUBLIC_SUPABASE_URL!,
    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!,
    {
      cookies: {
        getAll() {
          return request.cookies.getAll()
        },
        setAll(cookiesToSet) {
          cookiesToSet.forEach(({ name, value, options }) =>
            request.cookies.set(name, value, options)
          )
          supabaseResponse = NextResponse.next({
            request,
          })
          cookiesToSet.forEach(({ name, value, options }) =>
            supabaseResponse.cookies.set(name, value, options)
          )
        },
      },
    }
  )

  // Refresh session if expired
  await supabase.auth.getUser()

  return supabaseResponse
}

Use in middleware:

// middleware.ts
import { type NextRequest } from 'next/server'
import { updateSession } from '@/utils/supabase/middleware'

export async function middleware(request: NextRequest) {
  return await updateSession(request)
}

export const config = {
  matcher: ['/((?!_next/static|_next/image|favicon.ico).*)'],
}
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