consume webpack-config-terra package (cerner#3191)

babel.config.js

@@ -3,7 +3,7 @@ module.exports = (api) => {
   api.assertVersion('^7.4.4');
 
   const presets = [
-    '@babel/preset-env',
+    ['@babel/preset-env', { useBuiltIns: 'entry', corejs: { version: 3.6, proposals: true } }],
     '@babel/preset-react',
   ];
   const plugins = [

package.json

@@ -91,6 +91,7 @@
     "@babel/preset-react": "^7.0.0",
     "@cerner/browserslist-config-terra": "^3.1.0",
     "@cerner/eslint-config-terra": "^4.0.0",
+    "@cerner/webpack-config-terra": "^1.0.0-alpha.0",
     "babel-jest": "^24.8.0",
     "check-installed-dependencies": "^1.0.0",
     "core-js": "^3.1.3",

webpack.config.js

@@ -1,14 +1,41 @@
 const path = require('path');
 const merge = require('webpack-merge');
-const defaultWebpackConfig = require('terra-dev-site/config/webpack/webpack.config');
+const {
+  TerraDevSite,
+  TerraDevSiteEntrypoints,
+  DirectorySwitcherPlugin,
+  LocalPackageAliasPlugin,
+} = require('terra-dev-site');
 
-const coreConfig = () => {
+const WebpackConfigTerra = require('@cerner/webpack-config-terra');
+
+const coreConfig = (env = {}, argv = { p: false }) => {
+  const production = argv.p;
   const processPath = process.cwd();
   const rootPath = processPath.includes('packages') ? processPath.split('packages')[0] : processPath;
 
   const i18nAlias = path.resolve(path.join(rootPath, 'packages', 'terra-i18n'));
   return {
+    entry: TerraDevSiteEntrypoints,
+    plugins: [
+      new TerraDevSite({ env }),
+    ],
     resolve: {
+      plugins: [
+        new DirectorySwitcherPlugin({
+          shouldSwitch: !production,
+          rootDirectories: [
+            processPath,
+            path.resolve(processPath, 'packages', '*'),
+          ],
+        }),
+        new LocalPackageAliasPlugin({
+          rootDirectories: [
+            processPath,
+            path.resolve(processPath, 'packages', '*'),
+          ],
+        }),
+      ],
       alias: {
         'terra-i18n': i18nAlias,
       },
@@ -17,7 +44,7 @@ const coreConfig = () => {
 };
 
 const mergedConfig = (env, argv) => (
-  merge(defaultWebpackConfig(env, argv), coreConfig())
+  merge(WebpackConfigTerra(env, argv), coreConfig())
 );
 
 module.exports = mergedConfig;