diff --git a/libraries/core-react/package.json b/libraries/core-react/package.json
index e516c55751..bce24302fb 100644
--- a/libraries/core-react/package.json
+++ b/libraries/core-react/package.json
@@ -6,9 +6,9 @@
   "publishConfig": {
     "main": "dist/core-react.cjs.js",
     "module": "dist/core-react.es.js",
-    "browser": "dist/core-react.umd.js",
-    "types": "dist/types/index.d.ts"
+    "browser": "dist/core-react.umd.js"
   },
+  "types": "dist/types/index.d.ts",
   "license": "AGPL-3.0-or-later",
   "author": {
     "name": "EDS Core Team",
@@ -29,8 +29,7 @@
   "scripts": {
     "prepare": "npm run build",
     "build": "rollup -c",
-    "build:for-storybook": "rollup -c",
-    "dev": "rollup -c -w",
+    "dev": "rollup -c -w NODE_ENV=development",
     "test": "jest",
     "test:watch": "jest --watch"
   },
diff --git a/libraries/core-react/rollup.config.js b/libraries/core-react/rollup.config.js
index d3758d44cd..9ab72e4a6a 100644
--- a/libraries/core-react/rollup.config.js
+++ b/libraries/core-react/rollup.config.js
@@ -7,6 +7,9 @@ import typescript from 'rollup-plugin-typescript2'
 import pkg from './package.json'
 
 const peerDeps = Object.keys(pkg.peerDependencies || {})
+const environment = process.env.NODE_ENV
+
+const isDevelopment = environment === 'development'
 
 const globals = {
   react: 'React',
@@ -21,7 +24,6 @@ export default [
   {
     input: './src/index.ts',
     external: peerDeps,
-    // : [...peerDeps, 'focus-visible'],
     watch: {
       clearScreen: true,
       include: ['./src/**', './../tokens/**'],
@@ -48,8 +50,8 @@ export default [
       {
         file: pkg.publishConfig.module,
         name: pkg.name,
-        format: 'esm',
-        sourcemap: true,
+        format: 'es',
+        sourcemap: isDevelopment,
         globals,
       },
       { file: pkg.publishConfig.main, format: 'cjs' },