external d3 and lodash

build/prod.webpack.conf.js

@@ -3,7 +3,7 @@ const baseWebpackConfig = require('./base.webpack.conf');
 var conf = baseWebpackConfig;
 conf.mode = 'production';
 conf.externals = [
-  '@chartwerk/core'
+  '@chartwerk/core', 'd3', 'lodash',
 ];
 
 module.exports = baseWebpackConfig;