@babel/core#DEFAULT_EXTENSIONS TypeScript Examples

The following examples show how to use @babel/core#DEFAULT_EXTENSIONS. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: createRollupConfig.ts    From web with MIT License 4 votes vote down vote up 
export function createRollupConfig(params: CreateRollupConfigParams): RollupOptions {
  const { outputDir, indexFilename, indexHtmlString, storyFilePaths } = params;

  const options: RollupOptions = {
    preserveEntrySignatures: false,
    onwarn,
    output: {
      entryFileNames: '[hash].js',
      chunkFileNames: '[hash].js',
      assetFileNames: '[hash][extname]',
      format: 'system',
      dir: outputDir,
    },
    plugins: [
      resolve({
        moduleDirectories: ['node_modules', 'web_modules'],
      }),
      babel({
        babelHelpers: 'bundled',
        babelrc: false,
        configFile: false,
        extensions: [...DEFAULT_EXTENSIONS, 'md', 'mdx'],
        exclude: `${prebuiltDir}/**`,
        presets: [
          [
            require.resolve('@babel/preset-env'),
            {
              targets: [
                'last 3 Chrome major versions',
                'last 3 ChromeAndroid major versions',
                'last 3 Firefox major versions',
                'last 3 Edge major versions',
                'last 3 Safari major versions',
                'last 3 iOS major versions',
                'ie 11',
              ],
              useBuiltIns: false,
              shippedProposals: true,
              modules: false,
              bugfixes: true,
            },
          ],
        ],
        plugins: [
          [require.resolve('babel-plugin-bundled-import-meta'), { importStyle: 'baseURI' }],
          [
            require.resolve('babel-plugin-template-html-minifier'),
            {
              modules: {
                // this is web component specific, but has no effect on other project styles
                'lit-html': ['html'],
                'lit-element': ['html', { name: 'css', encapsulation: 'style' }],
                '@web/storybook-prebuilt/web-components': [
                  'html',
                  { name: 'css', encapsulation: 'style' },
                ],
                '@web/storybook-prebuilt/web-components.js': [
                  'html',
                  { name: 'css', encapsulation: 'style' },
                ],
                '@open-wc/testing': ['html', { name: 'css', encapsulation: 'style' }],
                '@open-wc/testing-helpers': ['html', { name: 'css', encapsulation: 'style' }],
              },
              logOnError: true,
              failOnError: false,
              strictCSS: true,
              htmlMinifier: {
                collapseWhitespace: true,
                conservativeCollapse: true,
                removeComments: true,
                caseSensitive: true,
                minifyCSS: true,
              },
            },
          ],
        ],
      }) as Plugin,
      html({ input: { name: indexFilename, html: indexHtmlString } }) as Plugin,
      polyfillsLoader({
        polyfills: {
          coreJs: true,
          fetch: true,
          abortController: true,
          regeneratorRuntime: 'always',
          webcomponents: true,
          intersectionObserver: true,
          resizeObserver: true,
        },
      }) as Plugin,
      terser({ format: { comments: false } }) as Plugin,
    ],
  };

  if (storyFilePaths && storyFilePaths.length > 0) {
    // plugins we need to inject only in the preview
    options.plugins!.unshift(injectExportsOrderPlugin(storyFilePaths));
    options.plugins!.unshift(mdxPlugin());
    options.plugins!.unshift(mdjsPlugin(params.type));
  }

  return options;
}