diff --git a/src/Umbraco.Web.UI.Client/libs/extensions-api/rollup.config.js b/src/Umbraco.Web.UI.Client/libs/extensions-api/rollup.config.js
new file mode 100644
index 0000000000..35421e5ce7
--- /dev/null
+++ b/src/Umbraco.Web.UI.Client/libs/extensions-api/rollup.config.js
@@ -0,0 +1,3 @@
+import config from '../../utils/rollup.config.js';
+
+export default config;
diff --git a/src/Umbraco.Web.UI.Client/libs/extensions-api/umb-lifecycle.interface.ts b/src/Umbraco.Web.UI.Client/libs/extensions-api/umb-lifecycle.interface.ts
index c90a871320..f602a5d9cc 100644
--- a/src/Umbraco.Web.UI.Client/libs/extensions-api/umb-lifecycle.interface.ts
+++ b/src/Umbraco.Web.UI.Client/libs/extensions-api/umb-lifecycle.interface.ts
@@ -1,9 +1,11 @@
-import type { UmbExtensionRegistry } from "./registry/extension.registry";
-import type { UmbControllerHostInterface } from "@umbraco-cms/controller";
+import type { UmbExtensionRegistry } from './registry/extension.registry';
+import type { UmbControllerHostInterface } from '@umbraco-cms/controller';
+
+export type UmbEntrypointOnInit = (host: UmbControllerHostInterface, extensionRegistry: UmbExtensionRegistry) => void;
 
 /**
  * Interface containing supported life-cycle functions for ESModule entrypoints
  */
 export interface UmbEntrypointModule {
-	onInit: (host: UmbControllerHostInterface, extensionRegistry: UmbExtensionRegistry) => void
+	onInit: UmbEntrypointOnInit;
 }