explain babel plugin, preset order

lib/pipeline/webpack.config.js

@@ -65,6 +65,11 @@ function resolve(pkgName) {
 // base config
 // -----------------------------------------------------------------------------
 
+// + Plugins run before Presets.
+// + Plugin ordering is first to last.
+// + Preset ordering is reversed (last to first).
+// see: https://babeljs.io/docs/en/plugins#plugin-ordering
+
 const base = {
   context: dappPath,
   entry: entry,