create-marp-slides/src/prompts.js

CLI tool for scaffolding Marp presentation projects with GitHub Pages deployment

import inquirer from 'inquirer';
import fs from 'fs';
import path from 'path';

export async function promptForProjectName() {
  const answers = await inquirer.prompt([
    {
      type: 'input',
      name: 'projectName',
      message: 'What is your project name?',
      default: 'my-slides',
      validate: (input) => {
        if (!input.trim()) {
          return 'Project name cannot be empty';
        }
        
        // Check if directory already exists
        const targetDir = path.join(process.cwd(), input.trim());
        if (fs.existsSync(targetDir)) {
          return `Directory "${input.trim()}" already exists. Please choose a different name.`;
        }
        
        // Check for valid directory name
        const validNamePattern = /^[a-zA-Z0-9-_]+$/;
        if (!validNamePattern.test(input.trim())) {
          return 'Project name can only contain letters, numbers, hyphens, and underscores';
        }
        
        return true;
      }
    }
  ]);
  
  return answers.projectName.trim();
}