diff --git a/package.json b/package.json
index 65db7d0e..93dfaebd 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
   "scripts": {
     "dev": "node scripts/dev.js",
     "build": "node scripts/build.js",
+    "size": "node scripts/build.js renderer-dom -f esm-browser",
     "lint": "prettier --write --parser typescript 'packages/**/*.ts'",
     "test": "jest"
   },