Creating an app

In the quick start we created a Feathers application in a single file to get a better understanding of how Feathers itself works.

The Feathers CLI allows us to initialize a new Feathers server with a recommended structure and generate things we commonly need like authentication, a database connection or new services. In this guide we will create a Feathers HTTP and real-time API for a chat application using the Feathers CLI. Using it, for example with a JavaScript frontend, looks like this:

You can find the complete example in the feathers-chat repository.

Generating the application

You can create a new Feathers application by running npm create feathers <name>. To create a new Feathers application called feathers-chat we can run:

npm create feathers@latest feathers-chat

If you never ran the command before you might be asked to confirm the package installation by pressing enter. The @latest in the command makes sure that the most recent released version of the CLI is used.

Note

Since the generated application is using modern features like ES modules, the Feathers CLI requires Node 16 or newer.

First, choose if you want to use JavaScript or TypeScript. When presented with the project name, just hit enter, or enter a name (no spaces). Next, write a short description for your application. Confirm the next questions with the default selection by pressing Enter. If you choose a database other than SQLite, make sure it is reachable at the connection string. For following this guide using MongoDB, change the database selection in the dropdown below.

Database

SQLMongoDB

---

Once you confirm the last prompt, the final selection should look similar to this:

Note

SQLite creates an SQL database in a file so we don't need to have a database server running.

Sweet! We generated our first Feathers application in a new folder called feathers-chat so we need to go there.

cd feathers-chat

tip

Most generated files have a page in the CLI guide which contains more information about the file and what it does.

Running the server and tests

The server can be started by running

npm run compile
npm run migrate
npm start

npm run compile
npm start

npm start

After that, you will see the Feathers logo at

http://localhost:3030

Note

You can exit the running process by pressing CTRL + C

The app also comes with a set of basic tests which can be run with

npm test

There is also a handy development command that restarts the server automatically whenever we make a code change:

npm run dev

Note

Keep this command running throughout the rest of this guide so it will reload all our changes automatically.

What's next?

In this chapter, we've created a new Feathers application. To learn more about the generated files and what you can do with the CLI, have a look at the CLI guide after finishing the Getting Started guide. In the next chapter we will set up user authentication.