Duplicate docs babel config as per eslint request.

Author: Hyperkid123

packages/react-renderer-demo/babel.config.js

@@ -0,0 +1,16 @@
+const muiTransformPlugin = [
+  'transform-imports',
+  {
+    '@material-ui/core': {
+      transform: (importName) => `@material-ui/core/${importName}`,
+      preventFullImport: false,
+      skipDefaultConversion: false
+    }
+  },
+  'MUI-CJS'
+];
+
+module.exports = {
+  presets: [['next/babel']],
+  plugins: [muiTransformPlugin]
+};