diff --git a/packages/jest-core/src/lib/__tests__/serializeToJSON.test.ts b/packages/jest-core/src/lib/__tests__/serializeToJSON.test.ts
index f20a796fcb37..220401524310 100644
--- a/packages/jest-core/src/lib/__tests__/serializeToJSON.test.ts
+++ b/packages/jest-core/src/lib/__tests__/serializeToJSON.test.ts
@@ -9,17 +9,17 @@ import serializeToJSON from '../serializeToJSON';
 
 // populate an object with all basic JavaScript datatypes
 const object = {
-  species: 'capybara',
-  ok: true,
-  i: ['pull up'],
+  chillness: 100,
+  flaws: null,
   hopOut: {
     atThe: 'after party',
     when: new Date('2000-07-14'),
   },
-  chillness: 100,
-  weight: 9.5,
-  flaws: null,
+  i: ['pull up'],
   location: undefined,
+  ok: true,
+  species: 'capybara',
+  weight: 9.5,
 };
 
 it('serializes regular objects like JSON.stringify', () => {
@@ -36,9 +36,9 @@ it('serializes errors', () => {
 
   expect(withoutError).not.toEqual(withError);
 
-  expect(withError).toContain(`"message":"too cool"`);
-  expect(withError).toContain(`"name":"Error"`);
-  expect(withError).toContain(`"stack":"Error:`);
+  expect(withError).toContain('"message":"too cool"');
+  expect(withError).toContain('"name":"Error"');
+  expect(withError).toContain('"stack":"Error:');
 
   expect(JSON.parse(withError)).toMatchObject({
     error: {
diff --git a/packages/jest-core/src/lib/serializeToJSON.ts b/packages/jest-core/src/lib/serializeToJSON.ts
index 1228329848b0..ce9798dc4cc1 100644
--- a/packages/jest-core/src/lib/serializeToJSON.ts
+++ b/packages/jest-core/src/lib/serializeToJSON.ts
@@ -13,7 +13,7 @@
  * This function handles the extended serialization wanted above.
  */
 export default function serializeToJSON(
-  value: any,
+  value: unknown,
   space?: string | number,
 ): string {
   return JSON.stringify(
diff --git a/packages/jest-core/src/runJest.ts b/packages/jest-core/src/runJest.ts
index 29f975e10ec9..fe73415807d2 100644
--- a/packages/jest-core/src/runJest.ts
+++ b/packages/jest-core/src/runJest.ts
@@ -33,9 +33,9 @@ import collectNodeHandles, {
   type HandleCollectionResult,
 } from './collectHandles';
 import getNoTestsFoundMessage from './getNoTestsFoundMessage';
+import serializeToJSON from './lib/serializeToJSON';
 import runGlobalHook from './runGlobalHook';
 import type {Filter, TestRunData} from './types';
-import serializeToJSON from './lib/serializeToJSON';
 
 const getTestPaths = async (
   globalConfig: Config.GlobalConfig,
@@ -117,17 +117,12 @@ const processResults = async (
       const cwd = tryRealpath(process.cwd());
       const filePath = path.resolve(cwd, outputFile);
 
-      fs.writeFileSync(
-        filePath,
-        `${jsonString}\n`,
-      );
+      fs.writeFileSync(filePath, `${jsonString}\n`);
       outputStream.write(
         `Test results written to: ${path.relative(cwd, filePath)}\n`,
       );
     } else {
-      process.stdout.write(
-        `${jsonString}\n`,
-      );
+      process.stdout.write(`${jsonString}\n`);
     }
   }