From 4ea6b26e979d8c485061b590aab61e69143e3ce5 Mon Sep 17 00:00:00 2001
From: Luigi Teschio <gigitux@gmail.com>
Date: Wed, 3 Jun 2026 15:39:08 +0200
Subject: [PATCH] Fix is-shallow-equal default script export

---
 packages/is-shallow-equal/package.json  |  1 +
 packages/is-shallow-equal/src/index.ts  | 18 ++++++++++++++----
 packages/is-shallow-equal/test/index.ts | 13 +++++++++++++
 3 files changed, 28 insertions(+), 4 deletions(-)

diff --git a/packages/is-shallow-equal/package.json b/packages/is-shallow-equal/package.json
index a7dda60dc89be2..742c6aff2747f1 100644
--- a/packages/is-shallow-equal/package.json
+++ b/packages/is-shallow-equal/package.json
@@ -43,6 +43,7 @@
 	},
 	"react-native": "src/index",
 	"wpScript": true,
+	"wpScriptDefaultExport": true,
 	"types": "build-types",
 	"sideEffects": false,
 	"devDependencies": {
diff --git a/packages/is-shallow-equal/src/index.ts b/packages/is-shallow-equal/src/index.ts
index 5136638ef38c72..fa0b3be5429972 100644
--- a/packages/is-shallow-equal/src/index.ts
+++ b/packages/is-shallow-equal/src/index.ts
@@ -15,7 +15,10 @@ export type ComparableObject = Record< string, any >;
  *
  * @return Whether the two values are shallow equal.
  */
-export default function isShallowEqual( a: unknown, b: unknown ): boolean {
+const isShallowEqualBase = function isShallowEqual(
+	a: unknown,
+	b: unknown
+): boolean {
 	if ( a && b ) {
 		if ( a.constructor === Object && b.constructor === Object ) {
 			return isShallowEqualObjects( a, b );
@@ -25,8 +28,15 @@ export default function isShallowEqual( a: unknown, b: unknown ): boolean {
 	}
 
 	return a === b;
-}
+};
 
-// `isShallowEqual` is exported also as a named export because esbuild cannot
-// expose the default export from the `window.wp.isShallowEqual` global.
+// `wpScriptDefaultExport` exposes `window.wp.isShallowEqual` as the callable
+// default export. Attach the named helpers to preserve the existing global API.
+const isShallowEqual = Object.assign( isShallowEqualBase, {
+	isShallowEqual: isShallowEqualBase,
+	isShallowEqualObjects,
+	isShallowEqualArrays,
+} );
+
+export default isShallowEqual;
 export { isShallowEqual, isShallowEqualObjects, isShallowEqualArrays };
diff --git a/packages/is-shallow-equal/test/index.ts b/packages/is-shallow-equal/test/index.ts
index 377a85d52f42dd..1fad4e05b6f916 100644
--- a/packages/is-shallow-equal/test/index.ts
+++ b/packages/is-shallow-equal/test/index.ts
@@ -2,6 +2,7 @@
  * Internal dependencies
  */
 import {
+	default as defaultIsShallowEqual,
 	isShallowEqual,
 	isShallowEqualArrays,
 	isShallowEqualObjects,
@@ -154,6 +155,18 @@ describe( 'isShallowEqual', () => {
 
 		expect( isShallowEqual( a, b ) ).toBe( true );
 	} );
+
+	it( 'exposes named helpers on the default export', () => {
+		expect( defaultIsShallowEqual.isShallowEqual ).toBe(
+			defaultIsShallowEqual
+		);
+		expect( defaultIsShallowEqual.isShallowEqualArrays ).toBe(
+			isShallowEqualArrays
+		);
+		expect( defaultIsShallowEqual.isShallowEqualObjects ).toBe(
+			isShallowEqualObjects
+		);
+	} );
 } );
 
 describe( 'isShallowEqualArrays', () => {