jest-leak-detector - npm Package Compare versions

Comparing version 28.1.1 to 28.1.3

build/index.d.ts

@@ -7,5 +7,8 @@ /**
  */
+/// <reference lib="es2021.weakref" />
 
+/// <reference lib="es2021.weakref" />
 declare class LeakDetector {
   private _isReferenceBeingHeld;
+  private _finalizationRegistry?;
   constructor(value: unknown);
@@ -12,0 +15,0 @@ isLeaking(): Promise<boolean>;

build/index.js

@@ -64,2 +64,3 @@ 'use strict';
  */
+/// <reference lib="es2021.WeakRef" />
 const tick = (0, _util().promisify)(setImmediate);
@@ -69,2 +70,3 @@
   _isReferenceBeingHeld;
+  _finalizationRegistry;
 
@@ -81,21 +83,33 @@ constructor(value) {
       );
-    }
+    } // TODO: Remove the `if` and `weak-napi` when we drop node 12, as v14 supports FinalizationRegistry
 
-    let weak;
+    if (globalThis.FinalizationRegistry) {
+      // When `_finalizationRegistry` is GCed the callback we set will no longer be called,
+      // so we need to assign it to `this` to keep it referenced
+      this._finalizationRegistry = new FinalizationRegistry(() => {
+        this._isReferenceBeingHeld = false;
+      });
 
-    try {
-      // eslint-disable-next-line import/no-extraneous-dependencies
-      weak = require('weak-napi');
-    } catch (err) {
-      if (!err || err.code !== 'MODULE_NOT_FOUND') {
-        throw err;
+      this._finalizationRegistry.register(value, undefined);
+    } else {
+      let weak;
+
+      try {
+        // eslint-disable-next-line import/no-extraneous-dependencies
+        weak = require('weak-napi');
+      } catch (err) {
+        if (!err || err.code !== 'MODULE_NOT_FOUND') {
+          throw err;
+        }
+
+        throw new Error(
+          'The leaking detection mechanism requires newer version of node that supports ' +
+            'FinalizationRegistry, update your node or install the "weak-napi" package ' +
+            'which support current node version as a dependency on your main project.'
+        );
       }
 
-      throw new Error(
-        'The leaking detection mechanism requires the "weak-napi" package to be installed and work. ' +
-          'Please install it as a dependency on your main project'
-      );
+      weak(value, () => (this._isReferenceBeingHeld = false));
     }
 
-    weak(value, () => (this._isReferenceBeingHeld = false));
     this._isReferenceBeingHeld = true; // Ensure value is not leaked by the closure created by the "weak" callback.
@@ -102,0 +116,0 @@

package.json

 {
   "name": "jest-leak-detector",
-  "version": "28.1.1",
+  "version": "28.1.3",
   "repository": {
@@ -21,3 +21,3 @@ "type": "git",
     "jest-get-type": "^28.0.2",
-    "pretty-format": "^28.1.1"
+    "pretty-format": "^28.1.3"
   },
@@ -34,3 +34,3 @@ "devDependencies": {
   },
-  "gitHead": "eb954f8874960920ac50a8f976bb333fbb06ada9"
+  "gitHead": "2cce069800dab3fc8ca7c469b32d2e2b2f7e2bb1"
 }

No alert changes

Improved metrics

Total package byte prevSize

6534

increased by14.01%

Lines of code

124

increased by13.76%

Dependency changes

• Updatedpretty-format@^28.1.3