stack-performance-analyzer/bin/cli.js

A comprehensive application stack analyzer that evaluates MEAN, MERN, and other Node.js-based applications across 15 performance criteria

#!/usr/bin/env node

const { Command } = require('commander');
const path = require('path');
const ApplicationAnalyzer = require('../index');
const chalk = require('chalk');

const program = new Command();

program
  .name('analyze-stack')
  .description('Comprehensive Node.js application stack analyzer')
  .version('1.0.0')
  .argument('[path]', 'Path to the project to analyze', '.')
  .option('-v, --verbose', 'Show verbose output')
  .option('-o, --output <format>', 'Output format (console, json)', 'console')
  .option('--save <file>', 'Save results to file')
  .action(async (projectPath, options) => {
    try {
      const absolutePath = path.resolve(projectPath);
      
      if (options.verbose) {
        console.log(chalk.blue(`Analyzing project at: ${absolutePath}`));
      }

      const analyzer = new ApplicationAnalyzer({
        projectPath: absolutePath,
        verbose: options.verbose
      });

      const results = await analyzer.analyze(absolutePath);

      if (options.output === 'json') {
        console.log(JSON.stringify(results, null, 2));
      }

      if (options.save) {
        const fs = require('fs-extra');
        await fs.writeJson(options.save, results, { spaces: 2 });
        console.log(chalk.green(`\n✅ Results saved to ${options.save}`));
      }

    } catch (error) {
      console.error(chalk.red('❌ Analysis failed:'), error.message);
      if (options.verbose) {
        console.error(error.stack);
      }
      process.exit(1);
    }
  });

// Add help examples
program.addHelpText('after', `

Examples:
  $ analyze-stack                    # Analyze current directory
  $ analyze-stack /path/to/project   # Analyze specific project
  $ analyze-stack . --save results.json  # Save results to file
  $ analyze-stack . --output json    # Output as JSON
  $ analyze-stack . --verbose        # Show detailed output
`);

program.parse();

// If no arguments provided, show help
if (process.argv.length === 2) {
  program.help();
}