diff --git a/packages/deprecated/README.md b/packages/deprecated/README.md
index 7528df707e4c7..6c8cb03d7ca71 100644
--- a/packages/deprecated/README.md
+++ b/packages/deprecated/README.md
@@ -70,7 +70,7 @@ message is only logged once.
 
 _Type_
 
--   `Record<string,true|undefined>` 
+-   `Record<string, true | undefined>` 
 
 
 <!-- END TOKEN(Autogenerated API docs) -->
diff --git a/packages/deprecated/src/index.js b/packages/deprecated/src/index.js
index d9b367c11ce55..3d2f2afaa3efe 100644
--- a/packages/deprecated/src/index.js
+++ b/packages/deprecated/src/index.js
@@ -7,7 +7,7 @@ import { doAction } from '@wordpress/hooks';
  * Object map tracking messages which have been logged, for use in ensuring a
  * message is only logged once.
  *
- * @type {Record<string,true|undefined>}
+ * @type {Record<string, true | undefined>}
  */
 export const logged = Object.create( null );
 
@@ -78,3 +78,5 @@ export default function deprecated( feature, options = {} ) {
 
 	logged[ message ] = true;
 }
+
+/** @typedef {import('utility-types').NonUndefined<Parameters<typeof deprecated>[1]>} DeprecatedOptions */