How to Install Blitz.js: Beginner's Installation Guide

How to Install Blitz.js: A Complete Beginner’s Guide

Blitz.js is a powerful full-stack JavaScript framework designed for building modern web applications with ease. It is built on top of Next.js and adds a layer of convention and full-stack capabilities, making it straightforward for developers to build server-rendered React apps with a simple and productive approach.

Prerequisites

Node.js: Ensure you have Node.js installed (version 16 or higher is recommended). You can download it from the official Node.js site.
Yarn or npm: Blitz.js uses package managers like Yarn or npm. Yarn is recommended, but npm works fine.
Basic knowledge of JavaScript and React: Since Blitz.js builds on React, familiarity helps.

Step-by-Step Installation Instructions

Step 1: Install Blitz globally

Open your terminal or command prompt and run the following command to install Blitz CLI globally using Yarn or npm:

yarn global add blitz
# or using npm
npm install -g blitz

Step 2: Create a new Blitz.js project

After installing the CLI, create a new Blitz.js app by running:

blitz new my-blitz-app

This command scaffolds a new Blitz project in the folder my-blitz-app. You’ll be prompted to choose your package manager (Yarn or npm) during setup.

Step 3: Navigate into your project directory

cd my-blitz-app

Step 4: Run the development server

Start your Blitz.js development server to see the app running locally:

blitz dev

Your app will run by default at http://localhost:3000. Open this URL in your browser to view your newly created Blitz.js app.

Step 5: Explore the project structure

Familiarize yourself with the app folders:

app/ – contains your pages, queries, mutations, and components.
db/ – the directory for your Prisma database schema and migrations.
pages/ – Next.js compatible pages.
blitz.config.js – Blitz.js configuration file.

Troubleshooting Common Issues

Blitz command not found: Make sure you installed Blitz globally using yarn global add blitz or npm install -g blitz. Also, ensure your global modules bin directory is in your PATH environment variable.
Port 3000 already in use: If the development server fails because port 3000 is occupied, stop the other app using it or run Blitz on a different port with blitz dev -p 3001.
Package manager conflicts: Stick to one package manager per project to avoid lockfile conflicts. If you started with Yarn, use Yarn commands consistently.

Summary Checklist

Installed Node.js (16+ recommended)
Installed Blitz.js CLI globally
Created a new Blitz.js project using blitz new
Started development server with blitz dev
Opened http://localhost:3000 to verify your app
Addressed common errors if any occurred during setup

Now you are ready to start building modern web apps with Blitz.js! For more insights on JavaScript frameworks, you might find our How to Install RedwoodJS guide helpful for exploring full-stack development alternatives.

Happy coding!