Merge pull request LucasBassetti#189 from pascalgagneur/Remove-react-from-dist-bundle

Remove React from bundle. 7KB smaller minified.

Author: LucasBassetti

webpack.config.prod.js

@@ -6,7 +6,10 @@ const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
 module.exports = {
   mode: 'production',
   entry: path.resolve(__dirname, 'lib/index'),
-  externals: { 'styled-components': 'styled-components' },
+  externals: {
+    'styled-components': 'styled-components',
+    react: 'react'
+  },
   output: {
     path: path.resolve(__dirname, 'dist'),
     filename: 'react-simple-chatbot.js',