really really fix source maps -_-

webpack.config.js

@@ -1,9 +1,10 @@
 const webpack = require("webpack");
 const UglifyJsPlugin = require('uglifyjs-webpack-plugin')
 var plugins = [];
+const production = process.env.NODE_ENV === 'production';
 
 //do we minify it all
-if(process.env.NODE_ENV === 'production'){
+if (production) {
 	console.log("creating production build");
 	plugins.push(new webpack.DefinePlugin({
 		'process.env.NODE_ENV': 'production',
@@ -43,7 +44,7 @@ module.exports =
 				root: '_'
 			}
 		},
-		plugins:plugins,
+		plugins: plugins,
 		module: {
 			rules: [
 				{
@@ -60,8 +61,8 @@ module.exports =
 		resolve: {
 			extensions: [".tsx", ".ts", ".js"]
 		},
-		devtool: 'cheap-module-source-map',
-		mode: process.env.NODE_ENV || 'development',
+		devtool: production ? 'source-map' : 'cheap-module-source-map',
+		mode: production ? 'production' : 'development',
 		optimization: {
 			minimizer: [
 				// we specify a custom UglifyJsPlugin here to get source maps in production