title: Additional minifications for Immutable.js?
body: <p>I noticed that Immutable.js is the single largest item in my minified webpack-generated bundle. I quite like it, but would love to find a way to minify it further.</p>
  
  <p><a href="https://i.stack.imgur.com/pW1fT.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/pW1fT.jpg" alt="enter image description here"></a></p>