From 9ad0f4bc6b8bdd94989804226c28c9960d9da7d1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bazyli=20Brz=C3=B3ska?= <bazyli.brzoska@gmail.com>
Date: Fri, 16 Aug 2019 07:44:27 +0200
Subject: [PATCH] Workaround a node >=12.5.0 bug that causes the process not to
 exit after tests have completed and cancerous memory growth (#8787)

---
 CHANGELOG.md                         |  1 +
 packages/jest-haste-map/src/index.ts | 24 +++++++++++++-----------
 2 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9e707b90b69d..470c7ddb9862 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -39,6 +39,7 @@
 - `[jest-snapshots]` Fix test retries that contain snapshots ([#8629](https://github.com/facebook/jest/pull/8629))
 - `[jest-mock]` Fix incorrect assignments when restoring mocks in instances where they originally didn't exist ([#8631](https://github.com/facebook/jest/pull/8631))
 - `[expect]` Fix stack overflow when matching objects with circular references ([#8687](https://github.com/facebook/jest/pull/8687))
+- `[jest-haste-map]` Workaround a node >=12.5.0 bug that causes the process not to exit after tests have completed and cancerous memory growth  ([#8787](https://github.com/facebook/jest/pull/8787))
 
 ### Chore & Maintenance
 
diff --git a/packages/jest-haste-map/src/index.ts b/packages/jest-haste-map/src/index.ts
index 70965909d79d..4a14bebc2eee 100644
--- a/packages/jest-haste-map/src/index.ts
+++ b/packages/jest-haste-map/src/index.ts
@@ -642,7 +642,7 @@ class HasteMap extends EventEmitter {
       .then(workerReply, workerError);
   }
 
-  private async _buildHasteMap(data: {
+  private _buildHasteMap(data: {
     removedFiles: FileData;
     changedFiles?: FileData;
     hasteMap: InternalHasteMap;
@@ -687,16 +687,18 @@ class HasteMap extends EventEmitter {
       }
     }
 
-    try {
-      await Promise.all(promises);
-      this._cleanup();
-      hasteMap.map = map;
-      hasteMap.mocks = mocks;
-      return hasteMap;
-    } catch (error) {
-      this._cleanup();
-      throw error;
-    }
+    return Promise.all(promises).then(
+      () => {
+        this._cleanup();
+        hasteMap.map = map;
+        hasteMap.mocks = mocks;
+        return hasteMap;
+      },
+      error => {
+        this._cleanup();
+        throw error;
+      },
+    );
   }
 
   private _cleanup() {