From 33e1e0a8ce622d0700bb7b240cf5a4676cfc4439 Mon Sep 17 00:00:00 2001
From: AndrewLeedham <andrew.leedham@xerox.com>
Date: Mon, 8 Aug 2022 11:27:04 +0100
Subject: [PATCH 1/2] fix: add workerIdleMemoryLimit to ValidConfig

---
 packages/jest-config/src/ValidConfig.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/jest-config/src/ValidConfig.ts b/packages/jest-config/src/ValidConfig.ts
index 18b083bbb8bf..d77c843c0a3d 100644
--- a/packages/jest-config/src/ValidConfig.ts
+++ b/packages/jest-config/src/ValidConfig.ts
@@ -187,6 +187,7 @@ const initialOptions: Config.InitialOptions = {
     ],
   ],
   watchman: true,
+  workerIdleMemoryLimit: 0.2,
 };
 
 export default initialOptions;

From b01fc2e26a95299c6180a4a0b409941d3b4430b8 Mon Sep 17 00:00:00 2001
From: AndrewLeedham <andrew.leedham@xerox.com>
Date: Mon, 8 Aug 2022 12:16:29 +0100
Subject: [PATCH 2/2] fix: workerIdleMemoryLimit types

---
 packages/jest-config/src/ValidConfig.ts | 2 +-
 packages/jest-types/src/Config.ts       | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/jest-config/src/ValidConfig.ts b/packages/jest-config/src/ValidConfig.ts
index d77c843c0a3d..02b19ee2b820 100644
--- a/packages/jest-config/src/ValidConfig.ts
+++ b/packages/jest-config/src/ValidConfig.ts
@@ -187,7 +187,7 @@ const initialOptions: Config.InitialOptions = {
     ],
   ],
   watchman: true,
-  workerIdleMemoryLimit: 0.2,
+  workerIdleMemoryLimit: multipleValidOptions(0.2, '50%'),
 };
 
 export default initialOptions;
diff --git a/packages/jest-types/src/Config.ts b/packages/jest-types/src/Config.ts
index 87a4eb29bdc2..fc3de9a49e64 100644
--- a/packages/jest-types/src/Config.ts
+++ b/packages/jest-types/src/Config.ts
@@ -327,7 +327,7 @@ export type InitialOptions = Partial<{
   watchAll: boolean;
   watchman: boolean;
   watchPlugins: Array<string | [string, Record<string, unknown>]>;
-  workerIdleMemoryLimit: number;
+  workerIdleMemoryLimit: number | string;
 }>;
 
 export type SnapshotUpdateState = 'all' | 'new' | 'none';
@@ -574,6 +574,6 @@ export type Argv = Arguments<
     watchAll: boolean;
     watchman: boolean;
     watchPathIgnorePatterns: Array<string>;
-    workerIdleMemoryLimit: number;
+    workerIdleMemoryLimit: number | string;
   }>
 >;