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Getting started

Discover expressly in less than 5 minutes.

First, head over to developer.fastly.com to get started with JavaScript on Fastly Compute:

  1. Learn about Fastly Compute: developer.fastly.com/learning/compute/
  2. Create your first JavaScript app: developer.fastly.com/learning/compute/javascript/

Install expressly​

Install expressly from the npm registry:

npm i @fastly/expressly
yarn add @fastly/expressly

Your first expressly app​

Replace the contents of your Compute app's src/index.js with the following:

import { Router } from "@fastly/expressly";

const router = new Router();

router.get("/", async (req, res) => {
  return res.send("Hello world!");
});

router.listen();

Try it out​

Start your app locally:

fastly compute serve

This will start your service on http://localhost:7676.

Live reloading​

You can use the Fastly CLI to automatically reload your app when you make a change in your local development environment.

fastly compute serve --watch