From 56a60c6e20dc6655ffbc39f2a1c28d16fd545f3a Mon Sep 17 00:00:00 2001
From: Sam Zhou <sam@developersam.com>
Date: Sat, 29 May 2021 13:41:54 -0400
Subject: [PATCH] fix: `require.resolve` on default test sequencer and test
 environment (#11482)

---
 CHANGELOG.md                                        |  1 +
 .../jest-config/src/__tests__/normalize.test.ts     | 13 +++++++++++++
 packages/jest-config/src/normalize.ts               |  7 +++++--
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13a4077437eb..57c0c7d69d20 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@
 
 ### Fixes
 
+- `[jest-config]` `require.resolve` on default test sequencer and test environment ([#11482](https://github.com/facebook/jest/pull/11482))
 - `[jest-mock]` Fixed `fn` and `spyOn` exports ([#11480](https://github.com/facebook/jest/pull/11480))
 
 ## 27.0.2
diff --git a/packages/jest-config/src/__tests__/normalize.test.ts b/packages/jest-config/src/__tests__/normalize.test.ts
index 3a29e19d6337..924391a49335 100644
--- a/packages/jest-config/src/__tests__/normalize.test.ts
+++ b/packages/jest-config/src/__tests__/normalize.test.ts
@@ -754,6 +754,19 @@ describe('testEnvironment', () => {
     );
   });
 
+  it('resolves to node environment by default', async () => {
+    const {options} = await normalize(
+      {
+        rootDir: '/root',
+      },
+      {} as Config.Argv,
+    );
+
+    expect(options.testEnvironment).toEqual(
+      require.resolve('jest-environment-node'),
+    );
+  });
+
   it('throws on invalid environment names', async () => {
     await expect(
       normalize(
diff --git a/packages/jest-config/src/normalize.ts b/packages/jest-config/src/normalize.ts
index c13e0d3b4d40..71aa54e53d60 100644
--- a/packages/jest-config/src/normalize.ts
+++ b/packages/jest-config/src/normalize.ts
@@ -608,7 +608,9 @@ export default async function normalize(
 
   options.testEnvironment = resolveTestEnvironment({
     rootDir: options.rootDir,
-    testEnvironment: options.testEnvironment || DEFAULT_CONFIG.testEnvironment,
+    testEnvironment:
+      options.testEnvironment ||
+      require.resolve(DEFAULT_CONFIG.testEnvironment),
   });
 
   if (!options.roots && options.testPathDirs) {
@@ -1054,7 +1056,8 @@ export default async function normalize(
   }
 
   newOptions.testSequencer = resolveSequencer(newOptions.resolver, {
-    filePath: options.testSequencer || DEFAULT_CONFIG.testSequencer,
+    filePath:
+      options.testSequencer || require.resolve(DEFAULT_CONFIG.testSequencer),
     rootDir: options.rootDir,
   });