diff --git a/package-lock.json b/package-lock.json
index afa221a77..28ae1a2cd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -37,6 +37,7 @@
         "vite": "^7.0.0",
         "vite-plugin-checker": "^0.11.0",
         "vite-plugin-dts": "^4.0.2",
+        "vite-plugin-externalize-deps": "^0.10.0",
         "vitest": "^4.0.3",
         "vitest-fail-on-console": "^0.10.1"
       },
@@ -4473,7 +4474,6 @@
       "integrity": "sha512-6IpQ7mKUxRcZNLIObR0hz7lxsapSSIYNZJwXPGeF0mTVqGKFIXj1DQcMoT22S3ROcLyY/rz0PWaWZ9ayWmad9g==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "deep-is": "^0.1.3",
         "fast-levenshtein": "^2.0.6",
@@ -5816,6 +5816,19 @@
         }
       }
     },
+    "node_modules/vite-plugin-externalize-deps": {
+      "version": "0.10.0",
+      "resolved": "https://registry.npmjs.org/vite-plugin-externalize-deps/-/vite-plugin-externalize-deps-0.10.0.tgz",
+      "integrity": "sha512-eQrtpT/Do7AvDn76l1yL6ZHyXJ+UWH2LaHVqhAes9go54qaAnPZuMbgxcroQ/7WY3ZyetZzYW2quQnDF0DV5qg==",
+      "dev": true,
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/voracious"
+      },
+      "peerDependencies": {
+        "vite": "^2.0.0 || ^3.0.0 || ^4.0.0 || ^5.0.0 || ^6.0.0 || ^7.0.0"
+      }
+    },
     "node_modules/vitest": {
       "version": "4.0.3",
       "resolved": "https://registry.npmjs.org/vitest/-/vitest-4.0.3.tgz",
diff --git a/package.json b/package.json
index b49d48897..efe22c77f 100644
--- a/package.json
+++ b/package.json
@@ -7,12 +7,10 @@
   "files": [
     "dist"
   ],
-  "main": "./dist/RosLib.umd.cjs",
   "module": "./dist/RosLib.js",
   "exports": {
     ".": {
-      "import": "./dist/RosLib.js",
-      "require": "./dist/RosLib.umd.cjs"
+      "import": "./dist/RosLib.js"
     }
   },
   "type": "module",
@@ -36,6 +34,7 @@
     "vite": "^7.0.0",
     "vite-plugin-checker": "^0.11.0",
     "vite-plugin-dts": "^4.0.2",
+    "vite-plugin-externalize-deps": "^0.10.0",
     "vitest": "^4.0.3",
     "vitest-fail-on-console": "^0.10.1"
   },
diff --git a/vite.config.ts b/vite.config.ts
index a7f9b9777..a565a48f0 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -2,6 +2,7 @@ import { resolve } from "path";
 import { defineConfig } from "vitest/config";
 import dts from "vite-plugin-dts";
 import checker from "vite-plugin-checker";
+import { externalizeDeps } from "vite-plugin-externalize-deps";
 
 export default defineConfig({
   plugins: [
@@ -20,6 +21,7 @@ export default defineConfig({
         useFlatConfig: true,
       },
     }),
+    externalizeDeps(),
   ],
   build: {
     lib: {
@@ -28,16 +30,7 @@ export default defineConfig({
       name: "ROSLIB",
       // the proper extensions will be added
       fileName: "RosLib",
-    },
-    rollupOptions: {
-      /*
-       * make sure to externalize deps that shouldn't be bundled
-       * into your library
-       */
-      external: ["eventemitter3", "ws", "src/util/decompressPng.js"],
-      output: {
-        globals: { eventemitter3: "EventEmitter3" },
-      },
+      formats: ["es"],
     },
     // Keep synchronized with minimum engine specified in CI & package.json
     target: "node18",