diff --git a/packages/fields/README.md b/packages/fields/README.md
index 41a11b72f772d4..6e96143f0f380e 100644
--- a/packages/fields/README.md
+++ b/packages/fields/README.md
@@ -53,7 +53,11 @@ Undocumented declaration.
 
 ### duplicateTemplatePart
 
-Undocumented declaration.
+This action is used to duplicate a template part.
+
+_Type_
+
+-   `Action< TemplatePart >`
 
 ### exportPattern
 
diff --git a/packages/fields/src/actions/duplicate-template-part.tsx b/packages/fields/src/actions/duplicate-template-part.tsx
index e92cbff74726f8..5632f9b15d4eab 100644
--- a/packages/fields/src/actions/duplicate-template-part.tsx
+++ b/packages/fields/src/actions/duplicate-template-part.tsx
@@ -16,6 +16,9 @@ import type { Post, TemplatePart } from '../types';
 import { CreateTemplatePartModalContents } from '../components/create-template-part-modal';
 import { getItemTitle } from './utils';
 
+/**
+ * This action is used to duplicate a template part.
+ */
 const duplicateTemplatePart: Action< TemplatePart > = {
 	id: 'duplicate-template-part',
 	label: _x( 'Duplicate', 'action label' ),
diff --git a/packages/fields/src/components/create-template-part-modal/index.tsx b/packages/fields/src/components/create-template-part-modal/index.tsx
index cab00b99ccdd7c..03b39a8fdcdf39 100644
--- a/packages/fields/src/components/create-template-part-modal/index.tsx
+++ b/packages/fields/src/components/create-template-part-modal/index.tsx
@@ -29,7 +29,6 @@ import {
 } from '@wordpress/icons';
 import { store as noticesStore } from '@wordpress/notices';
 // @ts-ignore
-// @ts-ignore
 import { serialize } from '@wordpress/blocks';
 
 /**
@@ -128,7 +127,7 @@ export function CreateTemplatePartModalContents( {
 
 	const defaultTemplatePartAreas = useSelect( ( select ) => {
 		const areas =
-			// @ts-expect-error The default_template_part_areas is not part of the core store type.
+			// @ts-expect-error getEntityRecord is not typed with unstableBase as argument.
 			select( coreStore ).getEntityRecord< {
 				default_template_part_areas: Array< {
 					area: string;