Add and Deploy Netlify Edge Functions with Node

Deploying Node.js serverless functions to Netlify involves a few steps.

Getting set up

Depending on your current situation, you can either

create a brand new project with the intention of solely hosting and deploying Netlify functions
adding Netlify functions to an existing project

Let's walk through both scenarios.

Starting a New Project

For new workspaces you can create a Nx workspace with serverless function with one command:

npx create-nx-workspace@latest my-functions --preset=@nx/netlify --site=my-site

Configure Existing Projects

You will need to install @nx/netlify if you haven't already.

nx add @nx/netlify

Next add the Netlify serverless configuration by running the following command:

nx g @nx/netlify:setup-functions

This will do a few things:

Create a new serverless function in src/functions.
Add the netlify.toml in the root of the project
Update your project.json to have 2 new targets serve-functions & deploy-functions.

Serve Your Functions Locally

To serve your functions locally, run:

nx serve-functions

Configure Your Netlify Deploy Settings

Make sure you have a site configured on Netlify (skip if you have already). You have mostly two options:

either go to app.netlify.com and create a new site
use the Netlify CLI and run npx netlify deploy which will walk you through the process

If you run npx netlify deploy in the workspace, the site ID will be automatically saved in the .netlify/state.json file. Alternatively adjust the deploy-functions in your project.json to include the --site flag:

{
  "targets": {
    ...
    "deploy-functions": {
      "dependsOn": ["lint"],
      "command": "npx netlify deploy --site=YOUR_SITE_ID",
      "configurations": {
        "production": {
          "command": "npx netlify deploy --site=YOUR_SITE_ID --prod"
        }
      }
    }
  }
}

Deployment

To deploy them to Netlify, run:

nx deploy-functions

This creates a "draft deployment" to a temporary URL. If you want to do a production deployment, pass the --prod flag:

nx deploy-functions --prod

This invokes the "production" configuration of the deploy-functions target and passes the --prod flag to the Netlify CLI.