Prevent PurgeCSS from dropping typeahead-related classes

webpack.config.js

@@ -22,6 +22,7 @@ module.exports = {
         new MiniCssExtractPlugin(),
         new PurgeCSSPlugin({
             paths: glob.sync(__dirname + '/templates/*.tmpl'),
+            safelist: [/show/, /^tt-/],
         }),
     ],
     module: {