text: /**
   * @license
   * Copyright (c) 2018 The Polymer Project Authors. All rights reserved.
   * This code may only be used under the BSD style license found at
   * http://polymer.github.io/LICENSE.txt
   * The complete set of authors may be found at
   * http://polymer.github.io/AUTHORS.txt
   * The complete set of contributors may be found at
   * http://polymer.github.io/CONTRIBUTORS.txt
   * Code distributed by Google as part of the polymer project is also
   * subject to an additional IP rights grant found at
   * http://polymer.github.io/PATENTS.txt
   */
  
  import filesize from 'rollup-plugin-filesize';
  import { terser } from 'rollup-plugin-terser';
  
  export default {
    input: 'lit-html.js',
    output: {
      file: 'lit-html.bundled.js',
      format: 'esm',
    },
    plugins: [
      terser({
        warnings: true,
        ecma: 2017,
        compress: {
          unsafe: true,
        },
        output: {
          comments: false,
        },
        mangle: {
          properties: {
            regex: /^__/,
          },
        },
      }),
      filesize({
        showBrotliSize: true,
      })
    ]
  }
  