use default webpack.config from core in angular app

app/angular/src/server/config/defaults/webpack.config.js

@@ -1,73 +1,5 @@
-// import webpack from 'webpack';
+import { createDefaultWebpackConfig } from '@storybook/core/server';
-import autoprefixer from 'autoprefixer';
 import { includePaths } from '../utils';
 
-// Add a default custom config which is similar to what React Create App does.
+module.exports = storybookBaseConfig =>
-module.exports = storybookBaseConfig => {
+  createDefaultWebpackConfig(storybookBaseConfig, includePaths);
-  const newConfig = { ...storybookBaseConfig };
-
-  newConfig.module.rules = [
-    ...storybookBaseConfig.module.rules,
-    {
-      test: /\.css$/,
-      use: [
-        require.resolve('style-loader'),
-        {
-          loader: require.resolve('css-loader'),
-          options: {
-            importLoaders: 1,
-          },
-        },
-        {
-          loader: require.resolve('postcss-loader'),
-          options: {
-            ident: 'postcss', // https://webpack.js.org/guides/migrating/#complex-options
-            plugins: () => [
-              require('postcss-flexbugs-fixes'), // eslint-disable-line
-              autoprefixer({
-                browsers: [
-                  '>1%',
-                  'last 4 versions',
-                  'Firefox ESR',
-                  'not ie < 9', // React doesn't support IE8 anyway
-                ],
-                flexbox: 'no-2009',
-              }),
-            ],
-          },
-        },
-      ],
-    },
-    {
-      test: /\.json$/,
-      include: includePaths,
-      loader: require.resolve('json-loader'),
-    },
-    {
-      test: /\.(ico|jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2)(\?.*)?$/,
-      include: includePaths,
-      loader: require.resolve('file-loader'),
-      query: {
-        name: 'static/media/[name].[hash:8].[ext]',
-      },
-    },
-    {
-      test: /\.(mp4|webm|wav|mp3|m4a|aac|oga)(\?.*)?$/,
-      include: includePaths,
-      loader: require.resolve('url-loader'),
-      query: {
-        limit: 10000,
-        name: 'static/media/[name].[hash:8].[ext]',
-      },
-    },
-  ];
-
-  newConfig.resolve.alias = {
-    ...storybookBaseConfig.resolve.alias,
-    // This is to support NPM2
-    'babel-runtime/regenerator': require.resolve('babel-runtime/regenerator'),
-  };
-
-  // Return the altered config
-  return newConfig;
-};