changelog and tweak tests

SimenB · SimenB · commit 833098cddb01 · 2026-05-01T22:20:21.000+02:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -19,6 +19,7 @@
 - `[jest-runtime]` Improve CJS-from-ESM interop: `__esModule`/Babel default unwrap, broader named-export coverage, and shared CJS singleton across importers ([#16050](https://github.com/jestjs/jest/pull/16050))
 - `[jest-runtime]` Load `.js` files with ESM syntax but no `"type":"module"` marker as native ESM ([#16050](https://github.com/jestjs/jest/pull/16050))
 - `[jest-runtime]` Fix deadlocks and double-evaluation in concurrent ESM and wasm imports ([#16050](https://github.com/jestjs/jest/pull/16050))
+- `[jest-runtime]` Fix error when `require()` is called after the Jest environment has been torn down ([#15951](https://github.com/jestjs/jest/pull/15951))
 
 ### Chore & Maintenance
 
diff --git a/e2e/__tests__/requireAfterTeardown.test.ts b/e2e/__tests__/requireAfterTeardown.test.ts
@@ -16,9 +16,7 @@ test('prints useful error for requires after test is done w/o `waitForUnhandledR
   const interestingLines = stderr.split('\n').slice(9, 18).join('\n');
 
   expect(interestingLines).toMatchSnapshot();
-  expect(stderr.split('\n')[19]).toMatch(
-    '(__tests__/lateRequire.test.js:11:20)',
-  );
+  expect(stderr).toContain('(__tests__/lateRequire.test.js:11:20)');
 });
 
 test('prints useful error for requires after test is done w/ `waitForUnhandledRejections`', () => {
@@ -29,7 +27,5 @@ test('prints useful error for requires after test is done w/ `waitForUnhandledRe
   const interestingLines = stderr.split('\n').slice(5, 14).join('\n');
 
   expect(interestingLines).toMatchSnapshot();
-  expect(stderr.split('\n')[16]).toMatch(
-    '(__tests__/lateRequire.test.js:11:20)',
-  );
+  expect(stderr).toContain('(__tests__/lateRequire.test.js:11:20)');
 });
diff --git a/e2e/__tests__/requireAfterTeardownJasmine.test.ts b/e2e/__tests__/requireAfterTeardownJasmine.test.ts
@@ -20,7 +20,5 @@ test.each`
   const interestingLines = stderr.split('\n').slice(9, 18).join('\n');
 
   expect(interestingLines).toMatchSnapshot();
-  expect(stderr.split('\n')[19]).toMatch(
-    '(__tests__/lateRequire.test.js:11:20)',
-  );
+  expect(stderr).toContain('(__tests__/lateRequire.test.js:11:20)');
 });
diff --git a/packages/jest-runtime/src/__tests__/runtime_jest_fn.js b/packages/jest-runtime/src/__tests__/runtime_jest_fn.js
@@ -78,25 +78,26 @@ describe('Runtime', () => {
   });
 
   describe('require after environment torn down', () => {
+    const originalExitCode = process.exitCode;
+
+    afterEach(() => {
+      jest.restoreAllMocks();
+      process.exitCode = originalExitCode;
+    });
+
     it('should log error and set exit code when require is called after teardown', async () => {
       const runtime = await createRuntime(__filename);
-      const consoleErrorSpy = jest
-        .spyOn(console, 'error')
-        .mockImplementation(() => {});
-      const originalExitCode = process.exitCode;
+      jest.spyOn(console, 'error').mockImplementation(() => {});
 
       runtime.teardown();
       runtime.requireModuleOrMock(runtime.__mockRootPath, 'RegularModule');
 
       expect(process.exitCode).toBe(1);
-      expect(consoleErrorSpy).toHaveBeenCalledWith(
+      expect(console.error).toHaveBeenCalledWith(
         expect.stringContaining(
           'You are trying to `require` a file after the Jest environment has been torn down.',
         ),
       );
-
-      consoleErrorSpy.mockRestore();
-      process.exitCode = originalExitCode;
     });
   });
 
diff --git a/packages/jest-runtime/src/index.ts b/packages/jest-runtime/src/index.ts
@@ -2056,7 +2056,7 @@ export default class Runtime {
         'You are trying to `require` a file after the Jest environment has been torn down.',
       );
       process.exitCode = 1;
-      // @ts-expect-error - exiting early, the process will be terminated
+      // @ts-expect-error: exiting early
       return;
     }
 

Original file line number	Diff line number	Diff line change
`@@ -2056,7 +2056,7 @@ export default class Runtime {`
`2056`	`2056`	'You are trying to `require` a file after the Jest environment has been torn down.',
`2057`	`2057`	`);`
`2058`	`2058`	`process.exitCode = 1;`
`2059`		`- // @ts-expect-error - exiting early, the process will be terminated`
	`2059`	`+ // @ts-expect-error: exiting early`
`2060`	`2060`	`return;`
`2061`	`2061`	`}`
`2062`	`2062`