From 601ec1e939b2d28276bd1d6ec2961ec4344711b1 Mon Sep 17 00:00:00 2001
From: Adrien Foulon <6115458+Tofandel@users.noreply.github.com>
Date: Tue, 25 Oct 2022 18:42:07 +0200
Subject: [PATCH 1/4] Consider cjs modules as object

---
 packages/jest-mock/src/index.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/jest-mock/src/index.ts b/packages/jest-mock/src/index.ts
index b74d14f53f16..4b6a1c82b5cb 100644
--- a/packages/jest-mock/src/index.ts
+++ b/packages/jest-mock/src/index.ts
@@ -426,7 +426,7 @@ function getType(ref?: unknown): MockMetadataType | null {
     return 'function';
   } else if (Array.isArray(ref)) {
     return 'array';
-  } else if (typeName === 'Object') {
+  } else if (typeName === 'Object' || typeName === 'Module') {
     return 'object';
   } else if (
     typeName === 'Number' ||

From 98aac3bacf3df2635abf7ba06bb8aa0a36f3b3d5 Mon Sep 17 00:00:00 2001
From: Tofandel <adrien.foulon@tukan.hu>
Date: Wed, 26 Oct 2022 15:37:29 +0200
Subject: [PATCH 2/4] Add unit test and changelog entry

---
 CHANGELOG.md                                  |  2 ++
 .../jest-mock/src/__tests__/index.test.ts     | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8a32bb7c980d..494e36427afb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@
 
 ### Fixes
 
+- `[jest-mock]` Treat cjs modules as objects so they can be mocked ([#13513](https://github.com/facebook/jest/pull/13513))
+
 ### Chore & Maintenance
 
 - `[@jest/transform]` Update `convert-source-map` ([#13509](https://github.com/facebook/jest/pull/13509))
diff --git a/packages/jest-mock/src/__tests__/index.test.ts b/packages/jest-mock/src/__tests__/index.test.ts
index 4d134554108f..03ff184ef200 100644
--- a/packages/jest-mock/src/__tests__/index.test.ts
+++ b/packages/jest-mock/src/__tests__/index.test.ts
@@ -213,6 +213,25 @@ describe('moduleMocker', () => {
       expect(mock.enumGetter).toBeDefined();
     });
 
+    it('mocks getters of cjs modules', () => {
+      const foo = Object.defineProperties(
+        {
+          enumGetter: {
+            enumerable: true,
+            get: () => 10,
+          },
+        },
+        {
+          __esModule: {value: true},
+          [Symbol.toStringTag]: {value: 'Module'},
+        },
+      );
+      const mock = moduleMocker.generateFromMetadata(
+        moduleMocker.getMetadata(foo),
+      );
+      expect(mock.enumGetter).toBeDefined();
+    });
+
     it('mocks ES2015 non-enumerable methods', () => {
       class ClassFoo {
         foo() {}

From d77170ba60b98fa9f7b79c5fbcf66fe05bb0b01f Mon Sep 17 00:00:00 2001
From: Simen Bekkhus <sbekkhus91@gmail.com>
Date: Wed, 26 Oct 2022 19:03:15 +0200
Subject: [PATCH 3/4] Update index.test.ts

---
 packages/jest-mock/src/__tests__/index.test.ts | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/packages/jest-mock/src/__tests__/index.test.ts b/packages/jest-mock/src/__tests__/index.test.ts
index 03ff184ef200..7457d7042cb9 100644
--- a/packages/jest-mock/src/__tests__/index.test.ts
+++ b/packages/jest-mock/src/__tests__/index.test.ts
@@ -215,12 +215,7 @@ describe('moduleMocker', () => {
 
     it('mocks getters of cjs modules', () => {
       const foo = Object.defineProperties(
-        {
-          enumGetter: {
-            enumerable: true,
-            get: () => 10,
-          },
-        },
+        {foo: 'bar'},
         {
           __esModule: {value: true},
           [Symbol.toStringTag]: {value: 'Module'},
@@ -229,7 +224,7 @@ describe('moduleMocker', () => {
       const mock = moduleMocker.generateFromMetadata(
         moduleMocker.getMetadata(foo),
       );
-      expect(mock.enumGetter).toBeDefined();
+      expect(mock.foo).toBeDefined();
     });
 
     it('mocks ES2015 non-enumerable methods', () => {

From f09cf2acbbdf629ec430d4aceba108595cd8f335 Mon Sep 17 00:00:00 2001
From: Simen Bekkhus <sbekkhus91@gmail.com>
Date: Wed, 26 Oct 2022 19:05:09 +0200
Subject: [PATCH 4/4] Update index.test.ts

---
 packages/jest-mock/src/__tests__/index.test.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/jest-mock/src/__tests__/index.test.ts b/packages/jest-mock/src/__tests__/index.test.ts
index 7457d7042cb9..39146edd7e30 100644
--- a/packages/jest-mock/src/__tests__/index.test.ts
+++ b/packages/jest-mock/src/__tests__/index.test.ts
@@ -213,7 +213,7 @@ describe('moduleMocker', () => {
       expect(mock.enumGetter).toBeDefined();
     });
 
-    it('mocks getters of cjs modules', () => {
+    it('handles custom toString of transpiled modules', () => {
       const foo = Object.defineProperties(
         {foo: 'bar'},
         {