create-vault/backend/men.js

A CLI tool to instantly set up a Full Stack (MERN) or Backend project with a structured folder system and pre-installed dependencies.

import fs from "fs";
import path from "path";
import { execSync } from "child_process";
import chalk from "chalk";
import inquirer from "inquirer";
import {
  FOLDERS,
  FILES,
  DEFAULT_ENV,
  GITIGNORE_CONTENT,
} from "../constants/constant.js";

const createPackageJson = (dir, dependencies) => {
  const packageJsonPath = path.join(dir, "package.json");

  if (!fs.existsSync(packageJsonPath)) {
    console.log(chalk.green("Initializing package.json..."));
    execSync("npm init -y", { cwd: dir, stdio: "inherit" });

    const packageJson = JSON.parse(fs.readFileSync(packageJsonPath, "utf-8"));

    packageJson.type = "module";

    fs.writeFileSync(packageJsonPath, JSON.stringify(packageJson, null, 2));
    console.log(chalk.blue('Updated package.json with "type": "module".'));
  }

  if (dependencies.length === 0) {
    console.log(chalk.red("No dependencies selected. Skipping installation."));
    return;
  }

  console.log(
    chalk.green(`Installing dependencies: ${dependencies.join(", ")}...`)
  );

  try {
    execSync(`npm install ${dependencies.join(" ")}`, {
      cwd: dir,
      stdio: "inherit",
    });

    console.log(chalk.yellow("Dependencies installed successfully."));
  } catch (error) {
    console.log(chalk.red("Error installing dependencies:", error.message));
  }
};

const setupBackend = async (baseDir) => {
  const createDir = (dir) => {
    if (!fs.existsSync(dir)) {
      fs.mkdirSync(dir, { recursive: true });
      console.log(chalk.green(`Created directory: ${dir}`));
    }
  };

  const createFile = (filePath, content = "") => {
    if (!fs.existsSync(filePath)) {
      fs.writeFileSync(filePath, content);
    }
  };

  FOLDERS.forEach((folder) => createDir(path.join(baseDir, folder)));
  FILES.forEach(({ path: filePath, content }) =>
    createFile(path.join(baseDir, filePath), content)
  );

  const { dependencies } = await inquirer.prompt([
    {
      type: "checkbox",
      name: "dependencies",
      message: chalk.yellow("Select dependencies to install:"),
      choices: [
        { name: "Express (Server framework)", value: "express", checked: true },
        { name: "Mongoose (MongoDB ODM)", value: "mongoose", checked: true },
        {
          name: "Cors (Cross-Origin Resource Sharing)",
          value: "cors",
          checked: true,
        },
        { name: "Dotenv (Environment variables)", value: "dotenv" },
        { name: "JWT (JSON Web Tokens)", value: "jsonwebtoken" },
        {
          name: "Nodemon (Auto-restart for development)",
          value: "nodemon",
          checked: true,
        },
      ],
    },
  ]);

  if (dependencies.length > 0) {
    createPackageJson(`${baseDir}/server`, dependencies);
  } else {
    console.log(chalk.red("No dependencies selected. Skipping installation."));
  }

  console.log(chalk.green(`Backend setup created in ${baseDir}/server 🚀`));
};

export default setupBackend;