title: Svelte with Babel for IE11
body: <p>I'm using svelte with Rollup. And I need to support IE11</p>
  
  <p>My current babel config in rollup.config.js is:</p>
  
  <pre><code>babel({
              extensions: [ '.js', '.mjs', '.html', '.svelte' ],
              exclude: 'node_modules/**',
              presets: [
                  [
                  '@babel/env',
                  {
                      modules: 'false',
                      targets: {
                      browsers: '&gt; 1%, IE 11, not op_mini all, not dead',
                      node: 8
                      },
                      useBuiltIns: 'usage'
                  }
                  ]
              ]
          }),
  </code></pre>
  
  <p>Please help me with configuring, now my app breaks both at IE and others(Chrome,Mozilla).</p>