title: How to generate minimalistic js bundle using webpack and babel
body: <p>I am trying to build webpack/babel config transpiring this code:</p>
  <pre><code>class Klass {
    constructor(name) {
      this.name = name;
    }
  
    welcome() {
      return `Hello, ${this.name}`;
    }
  }
  window.klass = new Klass(&quot;Robot Bender&quot;);
  </code></pre>
  <p>into IE10 compatible js.
  I don't have any third part libraries and my main requirement is bundle size.
  bundle will be embedded into script tag. I am using browserlist through babel-env.
  default webpack/bable config generates 10kb of code =(</p>
  <p>Thanks fo help!</p>