improve builds and local development

packages/netlify-cms-core/babel.config.js

@@ -1,3 +0,0 @@
-const config = require('../../babel.config.js');
-
-module.exports = config;

packages/netlify-cms-core/package.json

@@ -15,8 +15,8 @@
     "dist/"
   ],
   "scripts": {
-    "watch": "cross-env NETLIFY_CMS_VERSION=$npm_package_version webpack-dev-server --hot --open",
-    "build": "cross-env NETLIFY_CMS_VERSION=$npm_package_version webpack"
+    "watch": "webpack-dev-server --hot --open",
+    "build": "webpack"
   },
   "keywords": [
     "netlify",
@@ -42,7 +42,7 @@
     "jwt-decode": "^2.1.0",
     "lib": "^3.0.2",
     "localforage": "^1.4.2",
-    "lodash": "^4.13.1",
+    "lodash": "^4.17.10",
     "mdast-util-definitions": "^1.2.2",
     "mdast-util-to-string": "^1.0.4",
     "moment": "^2.11.2",
@@ -104,11 +104,11 @@
     "what-input": "^5.0.3"
   },
   "devDependencies": {
-    "@babel/core": "^7.0.0-beta.54",
-    "babel-loader": "^8.0.0-beta",
-    "cross-env": "^5.2.0",
+    "css-loader": "^1.0.0",
+    "friendly-errors-webpack-plugin": "^1.7.0",
+    "to-string-loader": "^1.1.5",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0",
-    "webpack-dev-server": "^3.1.4"
+    "webpack-dev-server": "^3.1.5"
   }
 }

packages/netlify-cms-core/src/components/UI/Toast.js

@@ -1,10 +1,12 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 import { css, injectGlobal, cx } from 'react-emotion';
-//import 'redux-notifications/lib/styles.css'; // Import default redux-notifications styles into global scope.
+import reduxNotificationsStyles from 'redux-notifications/lib/styles.css';
 import { shadows, colors, lengths } from 'netlify-cms-ui-default';
 
 injectGlobal`
+  ${reduxNotificationsStyles};
+
   .notif__container {
     z-index: 10000;
   }

packages/netlify-cms-core/webpack.config.js

@@ -7,8 +7,14 @@ module.exports = {
   context: path.join(__dirname, 'src'),
   entry: './index.js',
   module: {
-    noParse: /\.css$/,
-    ...baseConfig.module,
+    rules: [
+      ...baseConfig.module.rules,
+      {
+        test: /\.css$/,
+        include: [/redux-notifications/],
+        use: ['to-string-loader', 'css-loader'],
+      },
+    ],
   },
   devServer: {
     contentBase: './example',
@@ -18,6 +24,7 @@ module.exports = {
     port: 8080,
   },
   plugins: [
+    ...baseConfig.plugins.filter(plugin => !plugin instanceof FriendlyErrorsWebpackPlugin),
     new FriendlyErrorsWebpackPlugin({
       compilationSuccessInfo: {
         messages: ['Netlify CMS is now running at http://localhost:8080'],