oops, forgot export in index file

testutils/src/common.ts

@@ -334,7 +334,6 @@ export async function acceptDialog(
 
 /**
  * Click on the warning button in a dialog after it is attached
- *
  */
 export async function dangerDialog(
   host: HTMLElement = document.body,

testutils/src/index.ts

@@ -22,6 +22,7 @@ export {
   initNotebookContext,
   waitForDialog,
   acceptDialog,
+  dangerDialog,
   dismissDialog
 } from './common';