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Program Supabase Edge Functions Locally 🚀

When working with Bolt.new in WebContainer, you can’t deploy Supabase Edge Functions directly from the environment. Don’t worry - this isn’t as complicated as it might sound! Think of it like cooking in your own kitchen (your local machine) instead of a restaurant kitchen (WebContainer). This guide will walk you through the process step by step.

What are Edge Functions?

Edge Functions are like mini-programs that run close to your users, making your app faster and more responsive. Imagine having small helpers stationed around the world, ready to assist your users instantly instead of everything going through one central location.

Complete Guide: Deploying Edge Functions Using Docker Desktop

Prerequisites

  • Docker Desktop for Windows
  • A Supabase project
  • Your edge function code from Bolt.new

Step 1: Docker Setup

  1. Install Docker Desktop for Windows
  2. Open Docker Desktop
  3. Go to “Images” tab
  4. Search for and pull the latest “node” image
  5. Click “Run” on the node image
  6. Configure the container:
    • Map your working directory (e.g., C:/code) to /app
    • Click “Run”
  7. Open the container’s terminal in Docker Desktop

Step 2: Supabase Setup in Container

# Navigate to mounted directory
cd /app

# Install Supabase CLI globally
npm install -g supabase

# Verify installation
supabase -v

# Initialize Supabase project structure
supabase init

# Login to Supabase (will open browser)
supabase login

# Link your project
supabase link

Note: You might get a warning about config differences - this is normal and can be ignored

Step 3: Setting Up Function Files

  1. Create the function directory structure:
mkdir -p supabase/functions/your-function-name
  1. Create your function file:
    • Create index.ts in your function directory
    • Copy the edge function code from Bolt.new
    • Save it in supabase/functions/your-function-name/index.ts

Step 4: Deploy the Function

# Basic deployment
supabase functions deploy your-function-name

# If you need to specify project
supabase functions deploy your-function-name --project-ref your-project-ref

Step 5: Verify Deployment

  1. Open your Supabase dashboard
  2. Go to Edge Functions section
  3. Check that your function is listed
  4. Review deployment logs
  5. Test the function endpoint