title: Best way to filter files in gulp.watch?
body: <p>I would like to watch all, but the .min.ext files in my directories with <strong>gulp.js</strong>. What is the best way to filter out those?</p>
  
  <p>Example: </p>
  
  <pre><code>gulp.task('watch', function(e) {
     gulp.watch('./js/*.js', ['css']); // don't want to watch .min.js files. what is best way?
  });
  </code></pre>
  
  <p><strong>EDIT:</strong> If can't be done without external packages, which one is the most reputable?</p>