mern-project-cli

🚀 MERN Project Generator CLI

Create production-ready MERN stack projects in seconds!

NPM Package Website mern-project-cli

Website https://devcli.vercel.app

MERN Project Generator CLI is a powerful tool designed to simplify the process of setting up a complete, production-ready MERN stack project in seconds.

This tool eliminates the need for manual configurations, boilerplate code copying, and repetitive tasks, allowing developers to start building their apps right away with best practices in place. Perfect for both beginners and experienced developers, it saves time and ensures a solid project foundation.

✨ Features

• One Command Setup: Generate both frontend and backend with a single command
• Industry-Standard Structure: Pre-configured folder structure following best practices
• Create frontend with shadcn and vite, a new React project with either Shadcn UI + Tailwind CSS or just Vite + Tailwind CSS using a single command.
• Instant MongoDB Integration: Connect to MongoDB with zero configuration
• Generate Mongoose Schema: Generate Mongoose Schema with just one command
• Development Ready: Hot-reloading enabled for both frontend and backend
• Pre-configured Environment: .env.example files included with sensible defaults
• Git Ready: Initialized Git repository with proper .gitignore files

📑 Index

• Requirements
• Installation
• Commands
  • 1. devcli create
  • 2. devcli mongodb-connect
  • 3. devcli mongoose-schema
  • 4. devcli add-redux
  • 5. devcli create-frontend <project_name>
  • 6. devcli init-dockerfiles
  • 7. devcli add-eslint
  • 8. devcli add-jwt-auth
• Complete User Journey Example
• Future Enhancements
• Contribute
• License
• Support the project

⚡ Requirements

Before you begin, ensure your system meets these requirements:

• Node.js: Version 14.x or higher
• npm: Version 6.x or higher
• MongoDB: Local or remote installation

📦 Installation

Install the CLI tool globally to use it from anywhere in your system:

npm install -g mern-project-cli

To check installation version:

devcli --version

🛠️ Commands

1. Create MERN Project

devcli create <your_project_name>

What This Command Does:

1. 📁 Creates Project Structure:

The generated project follows the MVC (Model-View-Controller) pattern, a battle-tested architecture that separates your application into three main components:

your-project-name/
├── backend/
│   ├── controllers/         # Handle business logicdocumentation
│   ├── db/                  # Database configuration
│   ├── middlewares/         # Custom middleware functionsdocumentation
│   ├── models/              # MongoDB Schema model
│   ├── routes/              # API route definitions
│   ├── utils/               # Helper functionsdocumentation
│   ├── .env.example         # Environment variables template
│   ├── .gitignore           # Git ignore rules
│   ├── constants.js         # Application constants
│   ├── package.json         # Dependencies and scripts
│   ├── README.md            # Backend documentation
│   └── server.js            # Server entry point
└── frontend/
    ├── public/              # Static files
    ├── src/                 # React source code
    │   ├── components/      # React components
    │   ├── pages/           # Page components
    │   ├── utils/           # Helper functions
    │   └── App.js           # Root component
    ├── .env.example         # Frontend environment template
    └── package.json         # Frontend dependencies

2. Installs Dependencies:

• Backend: Express, Mongoose, CORS, dotenv, nodemon.
• Frontend: React, React Router, Axios, Other Create React App dependencies.

After Creation:

Start Backend Development:

cd your-project-name/backend

npm run dev             # Start development server with nodemon

Start Frontend Development:

cd your-project-name/frontend

npm start               # Start React App

Option:

devcli create my_project --next

2. Connect MongoDB

• Create database as your_project_name_db

devcli mongodb-connect

• Or with custom database name

devcli mongodb-connect --project custom-name

Options:

• -p, --project <name>: Specify custom database name
• No options: Uses project folder name as database name

What This Command Does:

1. Creates Database Connection:

• Generates connection.js in the db folder
• Sets up Mongoose connection with error handling
• Configures connection string based on environment variables

2. Updates Server Configuration:

• Adds database connection import to server.js
• Sets up connection status logging

Usage Examples:

# Using project name
devcli mongodb-connect

# Using custom database name
devcli mongodb-connect --project custom_name

Generated Files:

// db/connection.js
require('dotenv').config();
const mongoose = require('mongoose');

const dburl = process.env.DB_URL || 'mongodb://localhost:27017/your_db_name';
mongoose
  .connect(dburl)
  .then(() => console.log('Connected to DB Successfully'))
  .catch((err) => console.log(err.message));

3. Generate Mongoose Schema

• Create mongoose schema for your backend.

devcli devcli mongoose-schema <schema-name> <fieldName:fieldType fieldName:fieldType ...>

Usage Example

devcli mongoose-schema User name:String email:String password:String

This will create a User.js file with a Mongoose schema inside the models/ directory:

//models/User.js
import mongoose from 'mongoose';

const UserSchema = new mongoose.Schema({
  name: { type: String, required: true },
  email: { type: String, required: true },
  password: { type: String, required: true },
});

const User = mongoose.model('User', UserSchema);
export default User;

Explanation:

The mongoose-schema command takes a model name (User) and field definitions (name:String, email:String, password:String), generating a Mongoose model file in the models/ folder.

4. Add Redux

Set up Redux in your project or add new Redux slices.

Initialize Redux

devcli add-redux --init

What does this command do:

• Sets up Redux store configuration
• Creates necessary store files and directories
• Installs required dependencies (@reduxjs/toolkit and react-redux)
• Creates hooks for easier Redux usage

Create Redux Slice

devcli add-redux --slice <sliceName> --actions="action1,action2" --state="field1:type,field2:type"

Options:

• --slice: Name of the slice to create
• --actions: Comma-separated list of actions for the slice
• --state: Initial state fields with types (string, boolean, array)

Usage Example:

devcli add-redux --slice user --actions="login,logout" --state="username:string,isLoggedIn:boolean"

This creates:

• A new slice file in src/store/slices
• Boilerplate for specified actions
• Initial state with typed fields
• Automatic integration with the Redux store

Example Generated Redux Slice

When you run the command:

devcli add-redux --slice user --actions="login,logout" --state="username:string,isLoggedIn:boolean"

It generates the following slice in src/store/slices/userSlice.js:

import { createSlice } from '@reduxjs/toolkit';

const initialState = {
  username: '',
  isLoggedIn: false,
};

const userSlice = createSlice({
  name: 'user',
  initialState,
  reducers: {
    login: (state, action) => {
      // Implement login logic here
    },
    logout: (state, action) => {
      // Implement logout logic here
    },
  },
});

export const { login, logout } = userSlice.actions;
export default userSlice.reducer;

5. Create Frontend Project

Create a new React project with either Shadcn UI + Tailwind CSS or just Vite + Tailwind CSS using a single command.

# Create project with Shadcn UI
devcli create-frontend <project_name> --shadcn

# Create project with Vite + Tailwind CSS
devcli create-frontend <project_name> --vite

Features

With --shadcn flag:

• Creates a Vite + React project
• Installs and configures Tailwind CSS
• Sets up Shadcn UI with New York style and Zinc color scheme
• Configures project structure with best practices
• Adds initial button component as example
• Sets up path aliases for better imports
• Includes all necessary configuration files

With --vite flag:

• Creates a basic Vite + React project
• Installs and configures Tailwind CSS
• Sets up minimal project structure
• Includes starter template with modern styling

Options

• --shadcn: Include Shadcn UI setup with Tailwind CSS
• --vite: Create basic Vite project with Tailwind CSS only

Usage Examples

# Create a new React project with Shadcn UI
devcli create-frontend my-app --shadcn

# Create a new React project with just Vite + Tailwind
devcli create-frontend my-app --vite

# Navigate to project
cd my-app

# Start development server
npm run dev

Generated Project Structure with --shadcn

your-project/
├── src/
│   ├── components/
│   │   └── ui/
│   │       └── button.jsx
│   ├── lib/
│   │   └── utils.js
│   ├── App.jsx
│   └── index.css
├── jsconfig.json
├── tailwind.config.js
├── vite.config.js
└── components.json

After Creation with --shadcn

• Add more Shadcn components using:

  npx shadcn@latest add <component-name>
  

• Available components can be found at shadcn/ui components
• Customize theme in tailwind.config.js
• Add your own components in src/components

6. Initialize Docker Files

Generate Dockerfiles for both backend and frontend, along with a docker-compose.yml file for your MERN stack project.

devcli init-dockerfiles

What This Command Does:

1. Creates Backend Dockerfile:

   • Uses Node.js 20 Alpine image
   • Sets up working directory
   • Installs dependencies
   • Configures for development mode
   • Exposes port 5000

2. Creates Frontend Dockerfile:

   • Uses Node.js 20 Alpine image
   • Sets up working directory
   • Installs dependencies
   • Exposes port 3000
   • Configures for development mode

3. Generates docker-compose.yml:

   • Configures services for backend, frontend, and MongoDB
   • Sets up proper networking between services
   • Configures volumes for development
   • Sets environment variables
   • Establishes service dependencies

Requirements:

• Project must have backend and frontend directories in root
• Docker must be installed on your system

Generated Files:

your-project/
├── backend/
│   ├── Dockerfile
│   └── .dockerignore
├── frontend/
│   ├── Dockerfile
│   └── .dockerignore
└── docker-compose.yml

Usage:

# Navigate to your project root
cd your-project

# Generate Docker files
devcli init-dockerfiles

# Start the containerized application
docker-compose up

This will start your application with:

• Backend running on http://localhost:5000
• Frontend running on http://localhost:3000
• MongoDB running on port 27017

7. Add ESLint and Prettierrc

Initialize ESLint in the specified directory (frontend, backend, or the current directory) to ensure consistent code quality with tailored configurations based on the project type.

devcli add-eslint [directory]   # Set up ESLint in the specified directory (defaults to current directory)

What This Command Does:

• Automatically Detects Project Type: Determines if the project is a React, Vue, TypeScript, Node.js, or plain JavaScript application.
• Configures ESLint: Creates a .eslintrc.json file specific to the detected environment (e.g., browser for React, Node.js for backend).
• Installs Dependencies: Automatically installs ESLint, Prettier, and their necessary plugins as development dependencies in the specified directory.
• Supports Multiple File Extensions: Handles various file types based on the project structure.

Example Usage

• To set up ESLint in the backend directory:

  devcli add-eslint backend
  

• To set up ESLint in the frontend directory:

  devcli add-eslint frontend
  

• To set up ESLint in the current directory (default):

  devcli add-eslint
  

Example Generated ESLint Configuration

This command generates a basic ESLint configuration file (.eslintrc.json) that looks like this:

For Backend Directory:

{
  "env": {
    "browser": false,
    "node": true,
    "es2021": true
  },
  "extends": ["eslint:recommended", "plugin:prettier/recommended"],
  "parserOptions": {
    "ecmaVersion": 12
  },
  "rules": {}
}

For Frontend Directory:

{
  "env": {
    "browser": true,
    "node": false,
    "es2021": true
  },
  "extends": [
    "eslint:recommended",
    "plugin:react/recommended",
    "plugin:prettier/recommended"
  ],
  "parserOptions": {
    "ecmaVersion": 12,
    "ecmaFeatures": {
      "jsx": true
    }
  },
  "rules": {}
}

For Arbitrary Folders (Defaulting to Node):

{
  "env": {
    "browser": false,
    "node": true,
    "es2021": true
  },
  "extends": ["eslint:recommended", "plugin:prettier/recommended"],
  "parserOptions": {
    "ecmaVersion": 12
  },
  "rules": {}
}

Benefits

• Automates Setup: Saves time by automating the ESLint configuration process based on project type.
• Ensures Consistency: Helps maintain consistent linting rules across backend and frontend codebases.
• Supports Arbitrary Setup: Allows for easy ESLint configuration in any directory, defaulting to Node.js environment.

8. Add JWT Authetication and Authorization

Here is the content for the 8th command, "Add JWT Authentication":

8. Add JWT Authentication and Authorization

Add JWT authentication boilerplate to your backend project.

devcli add-jwt-auth

What This Command Does:

1. Creates Necessary Directories:

   • controllers/authController.js
   • middlewares/authMiddleware.js
   • models/userModel.js
   • routes/authRoutes.js

2. Generates Authentication Logic:

   • authController.js - Handles user registration and login with JWT token generation.
   • authMiddleware.js - Implements middleware to authenticate and authorize requests using JWT tokens.
   • userModel.js - Defines a Mongoose schema for the User model.
   • authRoutes.js - Defines API routes for authentication, including register, login, and a protected route.

3. Installs Required Dependencies:

   • bcryptjs - For password hashing
   • jsonwebtoken - For generating and verifying JWT tokens

4. Integrates Authentication Routes:

   • Adds the authentication routes to the server.js file.

5. Provides Next Steps:

   • Update the .env file with a secure JWT_SECRET.
   • Start the server and test the authentication routes:
     • POST /api/auth/register: Register a new user
     • POST /api/auth/login: Log in and get the JWT token
     • GET /api/auth/protected: Access the protected route with the JWT token

Usage:

1. Run the command in your project's backend directory:

   devcli add-jwt-auth
   

2. Update the .env file in the backend directory with a secure JWT_SECRET.

3. Start the server and test the authentication routes.

Generated Files:

backend/
├── controllers/
│   └── authController.js
├── middlewares/
│   └── authMiddleware.js
├── models/
│   └── userModel.js
├── routes/
│   └── authRoutes.js

The generated files implement the following functionality:

1. authController.js: Handles user registration and login, generating JWT tokens.
2. authMiddleware.js: Middleware to authenticate and authorize requests using JWT tokens.
3. userModel.js: Mongoose schema and model for the User.
4. authRoutes.js: API routes for authentication, including register, login, and a protected route.

After running this command, you can start using the authentication system in your backend application.

📖 Complete User Journey Example

Let's create a blog application from scratch:

# Step 1: Install CLI globally
npm install -g mern-project-cli

# Step 2: Create new project
devcli create my-blog-app

# Step 3: Set up backend
cd my-blog-app/backend
npm run dev

# Step 4: Set up frontend (new terminal)
cd ../frontend
npm start

# Step 5: Connect MongoDB (optional)
cd ../backend
devcli mongodb-connect

# Step 6: Generate Mongoose Scheama (optional)
devcli mongoose-schema Blog name:String category:String


# Step 7: Set up Redux
cd ../frontend
devcli add-redux --init

# Step 8: Set up Es-lint and prettierrc
cd ../backend
devcli add-eslint

cd ../frontend
devcli add-eslint
# Step 9: Create blog slice for Redux
devcli add-redux --slice blog --actions="addPost,deletePost,updatePost" --state="posts:array,loading:boolean"

# Step 10: Add jwt authetication 
cd ..backend
devcli add-jwt-auth

🎉 Congratulations! Your blog application structure is ready with:
- Backend running on `http://localhost:5000`
- Frontend running on `http://localhost:3000`
- MongoDB connected and ready to use

⚙️ Environment Configuration

Backend (.env)

# Server Configuration
PORT=5000

# Database Configuration
DB_URI=mongodb://localhost:27017/your_db_name

Frontend (.env)

# API Configuration
REACT_APP_API_URL=http://localhost:5000

🔧 Available Commands

CLI Commands

Project Setup

npm install -g mern-project-cli    # Install CLI globally
devcli --version                   # Check CLI version
devcli create <project-name>       # Create new MERN project

OR [Create frontend with shadcn+tailwind/ vite+tailwind]

devcli create-frontend <project-name> --shadcn    # shadcn-frontend
devcli create-frontend <project-name> --vite      # vite-frontend

Backend CLI Commands

# Database Connection
devcli mongodb-connect                                          # Connect MongoDB using project name
devcli mongodb-connect -p custom-name                           # Connect with custom database name

# Schema Generation
devcli mongoose-schema <schema-name> <fieldName:fieldType ...>  # Generate Mongoose schema
# Example: devcli mongoose-schema User name:String email:String password:String

Frontend CLI Commands

# Redux Setup
devcli add-redux --init                                          # Initialize Redux in frontend
devcli add-redux --slice <name> --actions="action1,action2" --state="field1:type,field2:type"       #Create Slice
# Example: devcli add-redux --slice user --actions="login,logout" --state="username:string,isLoggedIn:boolean"

Docker CLI Commands

# Docker Configuration
devcli init-dockerfiles            # Generate Dockerfiles and docker-compose.yml

Development Commands

Backend Development

cd backend                 # Navigate to backend directory
npm install                # Install dependencies
npm run dev                # Start with auto-reload (development)
npm start                  # Start without auto-reload (production)

Frontend Development

cd frontend                # Navigate to frontend directory
npm install                # Install dependencies
npm start                  # Start development server

Docker Development

docker-compose up          # Start all services (backend, frontend, mongodb)
docker-compose down        # Stop all services
docker-compose up --build  # Rebuild and start all services

🔮 Future Enhancements

1. Code Generation More Code-Snippets

🤝 Contribute to the Project

We welcome and appreciate contributions to MERN Project Generator CLI! If you’d like to help improve this tool, feel free to do so.

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🌟 Support the Project

If you find this tool helpful, please consider:

• Giving it a star on GitHub
• View on NPM mern-project-cli
• Sharing it with your fellow developers
• Contributing to its development

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🌟 Build with ❤️ by Manish Raj

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