Learn SUPABASE-EDGE-FUNCTIONS with Real Code Examples

Create a Supabase project

Install Supabase CLI (`npm install -g supabase`) and authenticate

Initialize a new Edge Function project via `supabase functions init`

Write function code in TypeScript or JavaScript

Deploy functions using `supabase functions deploy`

Install Node.js and npm

Install Supabase CLI (`npm install -g supabase`)

Authenticate CLI with Supabase account

Initialize Edge Function project

Deploy functions via CLI

supabase/functions/ - function source code

package.json - dependencies

tsconfig.json - TypeScript configuration

supabase/config.toml - project settings

tests/ - unit and integration tests

supabase functions init -> initialize project

supabase functions serve -> run locally

supabase functions deploy -> deploy edge function

supabase functions list -> list deployed functions

supabase secrets set -> store environment variables

UTF-8 payloads supported

Localized responses handled in code

Edge deployment ensures low-latency globally

Integration with external i18n services possible

Flexible for multi-language applications

Accessible via HTTP requests

Supports CORS for APIs

Globally deployed edge nodes for responsiveness

Secrets and environment variables secured via CLI

CLI and dashboard access for developers

Not handled directly - backend framework

Return JSON or HTML to frontend

Integrate with frontend frameworks

Serve dynamic content via API endpoints

Optional template rendering via HTTP responses

Functions are stateless by default

Persistent state via Supabase Postgres or Storage

Environment variables and secrets via CLI

Temporary runtime memory for request handling

No local server state required

Process JSON, HTML, and binary payloads

Read/write to Supabase Postgres and Storage

Access Supabase Auth for authentication/authorization

Integrate external APIs via fetch

Perform lightweight transformations and business logic