- webpack config separation for development and production

- load only the necessary classes from leaflet

webpack.production.js

@@ -0,0 +1,15 @@
+const { merge } = require('webpack-merge');
+const common = require('./webpack.common.js');
+const HtmlWebpackPlugin = require('html-webpack-plugin');
+
+
+module.exports = merge(common, {
+    mode: 'production',
+    devtool: 'source-map',
+    plugins: [
+        new HtmlWebpackPlugin({
+        template: './src/index.tmp.html',        
+        title: 'sensor viewer',        
+    })
+],
+});