add deps

package.json

@@ -43,6 +43,7 @@
     "@segment/localstorage-retry": "^1.2.2",
     "@segment/store": "^1.3.20",
     "@segment/top-domain": "^3.0.0",
+    "@segment/utm-params": "^2.0.0",
     "after": "^0.8.2",
     "auto-changelog": "^1.16.2",
     "babel-eslint": "^10.1.0",
@@ -61,6 +62,7 @@
     "gh-release": "^3.5.0",
     "is": "^3.3.0",
     "json3": "^3.3.3",
+    "lodash.merge": "^4.6.2",
     "md5": "^2.2.1",
     "obj-case": "^0.2.0",
     "on-body": "0.0.1",
@@ -73,6 +75,7 @@
   "devDependencies": {
     "@babel/core": "^7.6.2",
     "@babel/plugin-proposal-class-properties": "^7.0.0",
+    "@babel/plugin-proposal-optional-chaining": "^7.11.0",
     "@babel/plugin-transform-arrow-functions": "^7.10.4",
     "@babel/preset-env": "^7.6.2",
     "@mediaeventservices/jest-environment-jsdom-external-scripts": "^21.2.2",
@@ -107,6 +110,7 @@
     "rollup-plugin-strip": "^1.2.2",
     "rollup-plugin-terser": "^5.1.2",
     "rollup-plugin-uglify": "^6.0.3",
+    "rollup-plugin-visualizer": "^4.1.1",
     "size-limit": "^4.4.1"
   }
 }