cli.js

#!/usr/bin/env node
'use strict';

const Spinner = require('./index.js');
const FRAMES = Spinner.FRAMES;

// Parse command line arguments
const args = process.argv.slice(2);
const options = {
  frames: 'braille',
  prefix: 'Loading',
  interval: 100
};

for (let i = 0; i < args.length; i++) {
  const arg = args[i];
  switch (arg) {
    case '-f':
    case '--frames':
      const frameName = args[++i];
      if (FRAMES[frameName]) {
        options.frames = frameName;
      } else {
        // Treat as custom frames
        options.frames = args[i].split('');
      }
      break;
    case '-p':
    case '--prefix':
      options.prefix = args[++i];
      break;
    case '-i':
    case '--interval':
      options.interval = parseInt(args[++i], 10) || 100;
      break;
    case '-l':
    case '--list':
      console.log('Available presets:');
      Object.keys(FRAMES).forEach(name => {
        const frames = FRAMES[name];
        console.log(`  ${name}: ${frames.join(' ')}`);
      });
      process.exit(0);
      break;
    case '-h':
    case '--help':
      console.log(`
Usage: spinner [options] [message]

Options:
  -f, --frames <name>   Animation preset (default: braille)
  -p, --prefix <text>   Prefix text (default: Loading)
  -i, --interval <ms>  Interval in ms (default: 100)
  -l, --list           List all available presets
  -h, --help           Show this help message

Examples:
  spinner "Processing..."
  spinner -f dots "Please wait"
  spinner -f moon "Loading..."
  spinner -f equal "======="
      `.trim());
      process.exit(0);
  }
}

// Use remaining args as prefix
if (args.length > 0 && !args[0].startsWith('-')) {
  options.prefix = args.join(' ');
}

// Create and start spinner
const spinner = new Spinner({
  frames: options.frames,
  prefix: options.prefix,
  interval: options.interval,
  autoStart: true
});

// HandleCtrl+C to gracefully stop
process.on('SIGINT', () => {
  spinner.stop();
  console.log('\nCancelled.');
  process.exit(0);
});