use directories for structure

node_modules/minify/lib/js.js

@@ -7,14 +7,17 @@ const assert = require('assert');
  * minify js data.
  *
  * @param data
+ * @param userOptions - (optional) object that may contain a `js` key with an object of options
  */
-module.exports = (data) => {
+module.exports = (data, userOptions) => {
     assert(data);
     
+    const options = userOptions && userOptions.js || {};
+    
     const {
         error,
         code,
-    } = terser.minify(data);
+    } = terser.minify(data, options);
     
     if (error)
         throw error;