How to Use GitHub Copilot to Write Your First Full-Stack App in Just 3 Days

If you're a solo founder or indie hacker, the thought of building a full-stack app can be daunting. You might feel overwhelmed by the sheer amount of code you need to write or the different technologies you need to juggle. But what if I told you that you could leverage AI to speed up the process? Enter GitHub Copilot, a tool that can help you write code faster and more efficiently. In this guide, I'll walk you through how to use GitHub Copilot to build your first full-stack app in just three days.

Time Estimate and Prerequisites

You can finish this project in about 3 days if you dedicate a few solid hours each day. Here’s what you need to get started:

Prerequisites

• Basic understanding of JavaScript: You should be comfortable with ES6 syntax.
• GitHub account: You'll need this for Copilot and version control.
• Node.js and npm installed: Required for running JavaScript on the server.
• A code editor: Visual Studio Code is recommended because it integrates well with Copilot.

Day 1: Setting Up Your Project

Step 1: Initialize Your Project

1. Create a new directory for your app.
2. Run npm init -y in your terminal to create a package.json file.

Step 2: Install Dependencies

You’ll likely need Express for the backend and React for the frontend. Install them with:

npm install express react react-dom

Step 3: Enable GitHub Copilot

In Visual Studio Code, install the GitHub Copilot extension from the marketplace. Once installed, log in with your GitHub account.

Expected Outputs

By the end of Day 1, you should have your project structure set up with basic files:

• A server.js file for your Express server.
• A client folder for your React application.

Troubleshooting

• Copilot not suggesting code: Make sure the extension is enabled and you're in a JavaScript file.

Day 2: Building the Backend

Step 4: Writing Your API

Using GitHub Copilot, start writing your API routes. For example, you can type:

// Create a new route for users
app.get('/users', (req, res) => {
  // Copilot should suggest the logic here
});

Step 5: Connecting to a Database

If you’re using MongoDB, install the required package:

npm install mongoose

Then, set up your database connection. Copilot can assist here too by suggesting connection strings and schemas.

Expected Outputs

By the end of Day 2, you should have a working API that can handle basic CRUD operations.

Limitations

• Copilot might not always suggest the best practices for security or performance, so double-check the code it generates.

Day 3: Building the Frontend

Step 6: Setting Up React

Create your React components. Start by generating a simple component:

function App() {
  return <h1>Hello, World!</h1>;
}

Let Copilot assist in building forms and API calls.

Step 7: Connecting Frontend to Backend

Use fetch or axios to connect your frontend to the backend API. For instance:

fetch('/api/users')
  .then(response => response.json())
  .then(data => console.log(data));

Expected Outputs

By the end of Day 3, you should have a fully functional full-stack app that can display data fetched from your API.

What's Next

Consider deploying your app using platforms like Vercel for the frontend and Heroku for the backend.

Conclusion: Start Here

Building a full-stack app in just three days is ambitious, but with GitHub Copilot, it becomes much more manageable. To get started, follow this structured approach and leverage Copilot for code suggestions.

What We Actually Use

We use GitHub Copilot for rapid prototyping and to fill in boilerplate code, but we always review and refine the suggestions it makes. It's a powerful tool, but it's not a replacement for understanding the code you're writing.