Getting Started

Goal

This snapshot advances Tidepool Notes by teaching you to create a minimal Remix app on port 3004.

Every numbered folder is a complete app. Run this stage independently, then compare it with the previous folder.

Prerequisites

Use Node.js 20+, npm, and a terminal. You should recognize React components, TypeScript modules, and HTTP verbs.

Port 3004 must be free. Copy .env.example before starting database stages.

• Node.js and npm
• A code editor and terminal
• Docker from part 4 onward

Concepts

Remix maps files in app/routes to URLs. Loaders run on the server and feed data to React components for SSR.

Keep the server boundary visible: Remix loaders read trusted data on the server; actions must validate input and re-check authorization before mutations.

Walkthrough

Create the Remix project, return JSON from a root loader, and start the dev server on port 3004.

Read the example, then open the matching snapshot. The repository includes the surrounding setup and error handling.

export async function loader() {
  return json({ message: "Tidepool Notes is live", port: 3004 });
}

Run and verify

Enter 01-Getting-Started, install dependencies, copy .env.example when present, and start Remix on port 3004.

Open http://127.0.0.1:3004. Watch the terminal for validation and database errors.

git clone https://github.com/michaeldunga1/fcc-remix-blog.git
cd fcc-remix-blog/01-Getting-Started
npm install
cp .env.example .env
npm run dev

Troubleshooting

If the browser cannot connect, confirm Remix is still running. EADDRINUSE means another process owns 3004.

Missing-module errors usually mean npm install ran in another snapshot. For Postgres failures, confirm Docker and the tidepool_NN database name.

• Read the first error first
• Restart after environment changes
• Never commit .env or node_modules

Try this

Add a loader field ok: true and display it on the page.

Test a happy path and one invalid or unauthorized request.

• Make one small change
• Test it in the browser
• Compare with the next snapshot only after it works