feat: provide usable UMD builds for all packages (#2141)

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

@@ -1,43 +1,21 @@
-const path = require('path');
 const webpack = require('webpack');
 const pkg = require('./package.json');
-const { getConfig, rules } = require('../../scripts/webpack.js');
+const { getConfig } = require('../../scripts/webpack.js');
 
 const isProduction = process.env.NODE_ENV === 'production';
 
-const baseConfig = getConfig();
+const versionPlugin = new webpack.DefinePlugin({
+  NETLIFY_CMS_VERSION: null,
+  NETLIFY_CMS_CORE_VERSION: JSON.stringify(`${pkg.version}${isProduction ? '' : '-dev'}`),
+});
 
-module.exports = {
-  ...baseConfig,
-  context: path.join(__dirname, 'src'),
-  entry: ['./index.js'],
-  module: {
-    rules: [
-      ...Object.entries(rules)
-        .filter(([key]) => key !== 'js')
-        .map(([, rule]) => rule()),
-      {
-        test: /\.js$/,
-        exclude: /node_modules/,
-        use: {
-          loader: 'babel-loader',
-          options: {
-            configFile: path.join(__dirname, 'babel.config.js'),
-          },
-        },
-      },
-      {
-        test: /\.css$/,
-        include: [/(ol|redux-notifications|react-datetime)/],
-        use: ['to-string-loader', 'css-loader'],
-      },
-    ],
-  },
-  plugins: [
-    ...baseConfig.plugins,
-    new webpack.DefinePlugin({
-      NETLIFY_CMS_VERSION: null,
-      NETLIFY_CMS_CORE_VERSION: JSON.stringify(`${pkg.version}${isProduction ? '' : '-dev'}`),
-    }),
-  ],
+const configs = () => {
+  return getConfig().map(config => {
+    return {
+      ...config,
+      plugins: [...config.plugins, versionPlugin],
+    };
+  });
 };
+
+module.exports = configs();