Remix Blues Stack

Learn more about Remix Stacks.

npx create-remix --template remix-run/blues-stack

What's in the stack

• Multi-region Fly app deployment with Docker
• Multi-region Fly PostgreSQL Cluster
• Healthcheck endpoint for Fly backups region fallbacks
• GitHub Actions for deploy on merge to production and staging environments
• Email/Password Authentication with cookie-based sessions
• Database ORM with Prisma
• Styling with Tailwind
• End-to-end testing with Cypress
• Local third party request mocking with MSW
• Unit testing with Vitest and Testing Library
• Code formatting with Prettier
• Linting with ESLint
• Static Types with TypeScript

Not a fan of bits of the stack? Fork it, change it, and use npx create-remix --template your/repo! Make it your own.

Development

• Start the Postgres Database in Docker:

  npm run docker

• Initial setup:

  npm run setup

• Start dev server:

  npm run dev

This starts your app in development mode, rebuilding assets on file changes.

The database seed script creates a new user with some data you can use to get started:

• Email: [email protected]
• Password: rachelrox

If you'd prefer not to use Docker, you can also use Fly's Wireguard VPN to connect to a development database (or even your production database). You can find the instructions to set up Wireguard here, and the instructions for creating a development database here.

Relevant code:

This is a pretty simple note-taking app, but it's a good example of how you can build a full stack app with Prisma and Remix. The main functionality is creating users, logging in and out, and creating and deleting notes.

• creating users, and logging in and out ./app/models/user.server.ts
• user sessions, and verifying them ./app/session.server.ts
• creating, and deleting notes ./app/models/note.server.ts

Deployment

This Remix Stack comes with two GitHub Actions that handle automatically deploying your app to production and staging environments.

Prior to your first deployment, you'll need to do a few things:

• Install Fly

• Sign up and log in to Fly

  fly auth signup

• Create two apps on Fly, one for staging and one for production:

  fly create remix-blues-app-b95a
  fly create remix-blues-app-b95a-staging

• Create a new GitHub Repository

• Add a FLY_API_TOKEN to your GitHub repo. To do this, go to your user settings on Fly and create a new token, then add it to your repo secrets with the name FLY_API_TOKEN.

• Add a SESSION_SECRET to your fly app secrets, to do this you can run the following commands:

  fly secrets set SESSION_SECRET=$(openssl rand -hex 32) --app remix-blues-app-b95a
  fly secrets set SESSION_SECRET=$(openssl rand -hex 32) --app remix-blues-app-b95a-staging

  If you don't have openssl installed, you can also use 1password to generate a random secret, just replace $(openssl rand -hex 32) with the generated secret.

• Create a database for both your staging and production environments. Run the following:

  fly postgres create --name remix-blues-app-b95a-db
  fly postgres attach --postgres-app remix-blues-app-b95a-db --app remix-blues-app-b95a
  
  fly postgres create --name remix-blues-app-b95a-staging-db
  fly postgres attach --postgres-app remix-blues-app-b95a-staging-db --app remix-blues-app-b95a-staging

  Fly will take care of setting the DATABASE_URL secret for you.

Now that every is set up you can commit and push your changes to your repo. Every commit to your main branch will trigger a deployment to your production environment, and every commit to your dev branch will trigger a deployment to your staging environment.

Multi-region deploys

Once you have your site and database running in a single region, you can add more regions by following Fly's Scaling and Multi-region PostgreSQL docs.

Make certain to set a PRIMARY_REGION environment variable for your app. You can use [env] config in the fly.toml to set that to the region you want to use as the primary region for both your app and database.

Testing your app in other regions

Install the ModHeader browser extension (or something similar) and use it to load your app with the header fly-prefer-region set to the region name you would like to test.

You can check the x-fly-region header on the response to know which region your request was handled by.

GitHub Actions

We use GitHub Actions for continuous integration and deployment. Anything that gets into the main branch will be deployed to production after running tests/build/etc. Anything in the dev branch will be deployed to staging.

Testing

Cypress

We use Cypress for our End-to-End tests in this project. You'll find those in the cypress directory. As you make changes, add to an existing file or create a new file in the cypress/e2e directory to test your changes.

We use @testing-library/cypress for selecting elements on the page semantically.

To run these tests in development, run npm run test:e2e:dev which will start the dev server for the app as well as the Cypress client. Make sure the database is running in docker as described above.

We have a utility for testing authenticated features without having to go through the login flow:

cy.login();
// you are now logged in as a new user

We also have a utility to auto-delete the user at the end of your test. Just make sure to add this in each test file:

afterEach(() => {
  cy.cleanupUser();
});

That way, we can keep your local db clean and keep your tests isolated from one another.

Vitest

For lower level tests of utilities and individual components, we use vitest. We have DOM-specific assertion helpers via @testing-library/jest-dom.

Type Checking

This project uses TypeScript. It's recommended to get TypeScript set up for your editor to get a really great in-editor experience with type checking and auto-complete. To run type checking across the whole project, run npm run typecheck.

Linting

This project uses ESLint for linting. That is configured in .eslintrc.js.

Formatting

We use Prettier for auto-formatting in this project. It's recommended to install an editor plugin (like the VSCode Prettier plugin) to get auto-formatting on save. There's also a npm run format script you can run to format all files in the project.