aspirational approach to differential bundling

package.json

@@ -18,9 +18,15 @@
     "sirv": "^0.2.0"
   },
   "devDependencies": {
+    "@babel/core": "^7.0.0",
+    "@babel/plugin-syntax-dynamic-import": "^7.0.0",
+    "@babel/plugin-transform-runtime": "^7.0.0",
+    "@babel/preset-env": "^7.0.0",
+    "@babel/runtime": "^7.0.0",
     "chokidar": "^2.0.4",
     "npm-run-all": "^4.1.2",
     "rollup": "^0.65.0",
+    "rollup-plugin-babel": "^4.0.2",
     "rollup-plugin-commonjs": "^9.1.6",
     "rollup-plugin-loadz0r": "^0.3.0",
     "rollup-plugin-node-resolve": "^3.3.0",