Fix module registry memory leak. (#8282)

* Fix module registry memory leak. * Update CHANGELOG.md
jestjs · Apr 7, 2019 · 650c0b5 · 650c0b5
1 parent 8c92898
commit 650c0b5
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -10,6 +10,8 @@
 
 ### Performance
 
+- `[jest-runtime]` Fix module registry memory leak ([#8282](https://github.com/facebook/jest/pull/8282))
+
 ## 24.7.1
 
 ### Fixes

diff --git a/packages/jest-runtime/src/index.ts b/packages/jest-runtime/src/index.ts
@@ -517,8 +517,8 @@ class Runtime {
   resetModules() {
     this._isolatedModuleRegistry = null;
     this._isolatedMockRegistry = null;
-    this._mockRegistry = new Map();
-    this._moduleRegistry = new Map();
+    this._mockRegistry.clear();
+    this._moduleRegistry.clear();
 
     if (this._environment) {
       if (this._environment.global) {