easy-args.js

class ArgumentManager {
  constructor() {
    this.arguments = {};
  }

  parseArguments() {
    const args = process.argv.slice(2);
    for (let i = 0; i < args.length; i++) {
      const arg = args[i];
      if (arg.startsWith('--')) {
        const key = arg.slice(2);
        let value = true;
        if (i < args.length - 1 && !args[i + 1].startsWith('--')) {
          value = args[i + 1];
          i++;
        }
        this.arguments[key] = value;
      }
    }
  }

  getArgument(key) {
    return this.arguments[key];
  }

  hasArgument(key) {
    return key in this.arguments;
  }
}

// Example usage
const argumentManager = new ArgumentManager();
argumentManager.parseArguments();

if (argumentManager.hasArgument('help')) {
  console.log('Usage: node app.js [--help] [--verbose]');
  process.exit();
}

const isVerbose = argumentManager.getArgument('verbose');
console.log(`Verbose mode: ${isVerbose}`);