@nimbleai/generator-mern/generators/app/index.js

const Generator = require('yeoman-generator');
const path = require('path');
const glob = require('glob');

module.exports = class extends Generator {
  async prompting() {
    this.answers = await this.prompt([
      {
        type: 'input',
        name: 'projectName',
        message: 'Your MERN project name',
        default: this.appname
      }
    ]);
  }

  writing() {
    // Copy top-level dotfolders (e.g., .vscode, .husky)
    ['.vscode', '.husky'].forEach((folder) => {
      this.fs.copy(
        this.templatePath(folder),
        this.destinationPath(folder)
      );
    });

    // Copy top-level config files and dotfiles
    const configFiles = [
      '_gitignore',
      'README.md'
    ];
    configFiles.forEach((file) => {
      let destinationName = file;
      if (file === '_gitignore') {
        destinationName = '.gitignore';
      } else if (file === '_prettierrc') {
        destinationName = '.prettierrc';
      } else if (file.startsWith('_')) {
        destinationName = file.substring(1);
      }
      this.fs.copy(
        this.templatePath(file),
        this.destinationPath(destinationName)
      );
    });

    // Copy client and server folders, including dotfiles and underscore files
    ['client', 'server'].forEach((dir) => {
      // Copy all regular files and folders
      this.fs.copy(
        this.templatePath(`${dir}/**`),
        this.destinationPath(`${dir}/`),
        {
          globOptions: {
            dot: true,
            ignore: [this.templatePath(`${dir}/_*`)]
          }
        },
      );
      // Copy dotfiles in client/server
      const dotfiles = glob.sync(this.templatePath(`${dir}/.*`), { dot: true });
      dotfiles.forEach((filePath) => {
        const fileName = path.basename(filePath);
        this.fs.copy(
          filePath,
          this.destinationPath(`${dir}/${fileName}`)
        );
      });
      // Rename files with leading underscore in client/server
      const underscoreFiles = glob.sync(this.templatePath(`${dir}/_*`));
      underscoreFiles.forEach((filePath) => {
        const fileName = path.basename(filePath);
        const destName = fileName.substring(1); // Remove leading '_'
        this.fs.copy(
          filePath,
          this.destinationPath(`${dir}/${destName}`)
        );
      });
    });
  }

  end() {
    this.log(`MERN stack project '${this.answers.projectName}' created successfully.`);
    this.log(`To get started:\n\n  cd ${this.answers.projectName}\n  cd client && npm install\n  cd ../server && npm install`);
  }
};