From 83578005749b3817dc1186d91f3fc04b80d5971f Mon Sep 17 00:00:00 2001
From: Gareth Jones <3151613+G-Rath@users.noreply.github.com>
Date: Mon, 24 Nov 2025 07:22:14 +1300
Subject: [PATCH] fix(valid-mock-module-path): report on
 `ERR_PACKAGE_PATH_NOT_EXPORTED` errors

---
 .../__tests__/valid-mock-module-path.test.ts  | 28 +++++++++++++++++++
 src/rules/valid-mock-module-path.ts           |  8 ++++--
 2 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/src/rules/__tests__/valid-mock-module-path.test.ts b/src/rules/__tests__/valid-mock-module-path.test.ts
index 5442a4278..8151a9961 100644
--- a/src/rules/__tests__/valid-mock-module-path.test.ts
+++ b/src/rules/__tests__/valid-mock-module-path.test.ts
@@ -126,6 +126,34 @@ ruleTester.run('valid-mock-module-path', rule, {
         },
       ],
     },
+    // the imported file does not exist, but since it's not in `exports`
+    // a ERR_PACKAGE_PATH_NOT_EXPORTED error will be thrown instead
+    {
+      filename: __filename,
+      code: 'jest.mock("jest-util/build/isInteractive")',
+      errors: [
+        {
+          messageId: 'invalidMockModulePath',
+          data: { moduleName: '"jest-util/build/isInteractive"' },
+          column: 1,
+          line: 1,
+        },
+      ],
+    },
+    // the imported file does exist, but since it's not in `exports`
+    // a ERR_PACKAGE_PATH_NOT_EXPORTED error will be thrown instead
+    {
+      filename: __filename,
+      code: 'jest.mock("jackspeak/dist/commonjs/parse-args.js")',
+      errors: [
+        {
+          messageId: 'invalidMockModulePath',
+          data: { moduleName: '"jackspeak/dist/commonjs/parse-args.js"' },
+          column: 1,
+          line: 1,
+        },
+      ],
+    },
   ],
 });
 
diff --git a/src/rules/valid-mock-module-path.ts b/src/rules/valid-mock-module-path.ts
index 6478bd8f3..3954f4db2 100644
--- a/src/rules/valid-mock-module-path.ts
+++ b/src/rules/valid-mock-module-path.ts
@@ -24,7 +24,8 @@ export default createRule<
       description: 'Disallow mocking of non-existing module paths',
     },
     messages: {
-      invalidMockModulePath: 'Module path {{ moduleName }} does not exist',
+      invalidMockModulePath:
+        'Module path {{ moduleName }} does not exist or is not exported',
     },
     schema: [
       {
@@ -104,7 +105,10 @@ export default createRule<
 
           // Reports unexpected issues when attempt to verify mocked module path.
           // The list of possible errors is non-exhaustive.
-          if (castedErr.code !== 'MODULE_NOT_FOUND') {
+          if (
+            castedErr.code !== 'MODULE_NOT_FOUND' &&
+            castedErr.code !== 'ERR_PACKAGE_PATH_NOT_EXPORTED'
+          ) {
             throw new Error(
               `Error when trying to validate mock module path from \`jest.mock\`: ${err}`,
             );