Clean CLI

Install a Command Line Interface to generate the boilerplate you need to develop a Clean Architecture.

Getting Started

You need to have a nodejs project and go to the root directory.

Prerequisites

npm
node 14+

Installing

If you got an old version of clean-cli.

npm uninstall clean-cli -g

then

npm install clean-cli -g

Usage

To generate your files: Pattern

clean-cli generate [LAYER] [ACTION] [DATA]

Example

clean-cli generate allLayers gettingOne user
# Equivalent to 
clean-cli generate controller gettingOne user
clean-cli generate useCase gettingOne user
clean-cli generate dataAccess gettingOne user
clean-cli generate entity gettingOne user

Example in an express server

Generate Server

Execute the command to create all the layers of your endpoint.

clean-cli generate allLayers creating user

Create an index.js initializing the server

// src/index.js

const express = require('express')
const app = express()
const port = 3000
const {createUser} = require('./controllers');

app.post('/user', createUser);

app.listen(port, () => {
  console.log(`Example app listening at http://localhost:${port}`)
})

Then execute:

# If the project is brand new
npm init 
npm install express --save

Carry out the Dependency injection

Copy this file in src/controllers/ :

// src/controllers/index.js

/* Dependencies */
const {addUser} = require('../use-cases');

/* Factories */
const makeCreateUser = require('./create-user');

/* Injections */
const createUser = makeCreateUser(addUser);

/* Exports */
exports.createUser = createUser;

Copy this file in src/entities/ :

// src/entities/index.js

/* Dependencies */

/* Factories */
const makeBuildUser = require('./build-user');

/* Injections */
const buildUser = makeBuildUser();

/* Exports */
exports.buildUser = buildUser;

Copy this file in src/data-access/ :

// src/data-access/index.js

/* Dependencies */

/* Factories */
const makeUserDb = require('./user-db');

/* Injections */
const userDb = makeUserDb();

/* Exports */
exports.userDb = userDb;

Copy this file in src/use-cases/ :

// src/use-cases/index.js

/* Dependencies */
const {buildUser} = require('../entities');
const {userDb} = require('../data-access');

/* Factories */
const makeAddUser = require('./add-user');

/* Injections */
const addUser = makeAddUser(buildUser, userDb);

/* Exports */
exports.addUser = addUser;

Fill the Skeletons

Fill your controller, here is an example :

// src/controller/create-user.js

module.exports = (addUser) =>
async function createUser(request, response) {
    const user = await addUser({username: 'Linus'});
    console.log('user', user);
    return response.send(user);
}

Fill your useCase, here is an example :

// src/use-cases/add-user.js

module.exports = (buildUser, userDb) =>
async function addUser(userInfo) {
    const user = buildUser(userInfo);
    const added = await userDb.insert(user);
    console.log(added);
    return added;
}

Fill your entity, here is an example :

// src/entities/build-user.js

module.exports = () =>
async function buildUser(userInfo) {
    const user = {};
    
    if (userInfo && typeof userInfo?.username === 'string') {
        user.username = userInfo.username;
    }
    
    return user;
}

Fill your dataAccess, here is an example :

// src/data-access/user-db.js

module.exports = () => {

  const users = [];
        
  async function insert(user) {
    users.push(user);
    return user;
  }

return Object.freeze({insert})

}

Test your app

Launch the server

node src/index.js

Then consume your endpoint

curl --request POST --url http://localhost:3000/user

About Clean Architecture

If you need more information about clean architecture, I highly recommend this video :

https://www.youtube.com/watch?v=fy6-LSE_zjI&t=1831s&ab_channel=DevMastery

Development on the package

First

git clone https://github.com/BlondJP/clean-cli clean-cli

Then

cd clean-cli

Then

npm install

Then

npm run build

Then

npm link

then try

clean-cli generate controller creating user

Testing

To launch unit tests

npm run test

Author

• Jean-Philippe BLOND

The project

Clean-cli is an open source project, it is functional in his state. It is also forkable if you need to adapt it to your needs.

If this project helped you, please star his repository. https://github.com/BlondJP/clean-cli

License

This project is licensed under the MIT License