From 4af559a0157f64acbc4d2809883bfa8a4b4c04fb Mon Sep 17 00:00:00 2001
From: Simen Bekkhus <sbekkhus91@gmail.com>
Date: Wed, 9 Feb 2022 11:47:55 +0100
Subject: [PATCH] perf(haste-map): default to node crawl if watchman is not
 enabled (#12320)

---
 CHANGELOG.md                                        | 2 ++
 e2e/__tests__/__snapshots__/showConfig.test.ts.snap | 2 +-
 packages/jest-config/src/Defaults.ts                | 2 +-
 packages/jest-config/src/ValidConfig.ts             | 2 +-
 4 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 851a08ed0c35..f46fc07180b5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,8 @@
 
 ### Performance
 
+- `[jest-haste-map]` [**BREAKING**] Default to `node` crawler over shelling out to `find` if `watchman` is not enabled ([#12320](https://github.com/facebook/jest/pull/12320))
+
 ## 27.5.1
 
 ### Features
diff --git a/e2e/__tests__/__snapshots__/showConfig.test.ts.snap b/e2e/__tests__/__snapshots__/showConfig.test.ts.snap
index 16f770844234..7a7744fb52d6 100644
--- a/e2e/__tests__/__snapshots__/showConfig.test.ts.snap
+++ b/e2e/__tests__/__snapshots__/showConfig.test.ts.snap
@@ -22,7 +22,7 @@ exports[`--showConfig outputs config info and exits 1`] = `
       "haste": {
         "computeSha1": false,
         "enableSymlinks": false,
-        "forceNodeFilesystemAPI": false,
+        "forceNodeFilesystemAPI": true,
         "throwOnModuleCollision": false
       },
       "injectGlobals": true,
diff --git a/packages/jest-config/src/Defaults.ts b/packages/jest-config/src/Defaults.ts
index 5ccc8e0e4fd4..251ecebb8996 100644
--- a/packages/jest-config/src/Defaults.ts
+++ b/packages/jest-config/src/Defaults.ts
@@ -36,7 +36,7 @@ const defaultOptions: Config.DefaultOptions = {
   haste: {
     computeSha1: false,
     enableSymlinks: false,
-    forceNodeFilesystemAPI: false,
+    forceNodeFilesystemAPI: true,
     throwOnModuleCollision: false,
   },
   injectGlobals: true,
diff --git a/packages/jest-config/src/ValidConfig.ts b/packages/jest-config/src/ValidConfig.ts
index 932e7737d904..8de7fb87c1c7 100644
--- a/packages/jest-config/src/ValidConfig.ts
+++ b/packages/jest-config/src/ValidConfig.ts
@@ -60,7 +60,7 @@ const initialOptions: Config.InitialOptions = {
     computeSha1: true,
     defaultPlatform: 'ios',
     enableSymlinks: false,
-    forceNodeFilesystemAPI: false,
+    forceNodeFilesystemAPI: true,
     hasteImplModulePath: '<rootDir>/haste_impl.js',
     hasteMapModulePath: '',
     platforms: ['ios', 'android'],