compose: Add types to usePrevious (#31944)

packages/compose/README.md

@@ -367,7 +367,7 @@ _Parameters_
 
 _Returns_
 
--   `T|undefined`: The value from the previous render.
+-   `T | undefined`: The value from the previous render.
 
 <a name="useReducedMotion" href="#useReducedMotion">#</a> **useReducedMotion**
 

packages/compose/src/hooks/use-previous/index.js

@@ -11,14 +11,14 @@ import { useEffect, useRef } from '@wordpress/element';
  *
  * @param {T} value The value to track.
  *
- * @return {T|undefined} The value from the previous render.
+ * @return {T | undefined} The value from the previous render.
  */
 export default function usePrevious( value ) {
 	// Disable reason: without an explicit type detail, the type of ref will be
 	// inferred based on the initial useRef argument, which is undefined.
 	// https://github.com/WordPress/gutenberg/pull/22597#issuecomment-633588366
 	/* eslint-disable jsdoc/no-undefined-types */
-	const ref = useRef( /** @type {T|undefined} */ ( undefined ) );
+	const ref = useRef( /** @type {T | undefined} */ ( undefined ) );
 	/* eslint-enable jsdoc/no-undefined-types */
 
 	// Store current value in ref.

packages/compose/tsconfig.json

@@ -19,6 +19,7 @@
 		"src/hooks/use-debounce/**/*",
 		"src/hooks/use-instance-id/**/*",
 		"src/hooks/use-focus-return/**/*",
+		"src/hooks/use-previous/**/*",
 		"src/utils/**/*"
 	]
 }