Launching a dev server in frameworks I’ve used

I use Angular and Nest.js at work, Astro for this blog (though I used to use Eleventy), and Next.js for my Latin dictionary website (though I used to use Create React App).

Across these frameworks, there’s some variation in the default NPM commands for starting an development server that automatically reloads when a file is saved. There’s also a little bit of variation in the default port number, though most use 3000.

So I decided to make a list of the starting commands and URLs for the dev servers.

Note that npm start is equivalent to npm run start. In Astro, it’s also equivalent to npm run dev.

Angular	`npm start`	http://localhost:4200
Astro 2.0	`npm start npm run dev`	http://localhost:3000 (but opens at http://127.0.0.1:3000)
Astro 3.0	`npm start npm run dev`	http://localhost:4321 (like a countdown for a rocket launch 🚀)
Create React App	`npm start`	http://localhost:3000
Eleventy	`npm run dev`	http://localhost:8080
Nest.js	`npm run start:dev`	http://localhost:3000
Next.js	`npm run dev`	http://localhost:3000