[jest-leak-detector] remove code repeat (#8438)

* [jest-leak-detector] remove code repeat 🎨 * Update change log 📝
jestjs · May 7, 2019 · 7197b1c · 7197b1c
1 parent 985d26c
commit 7197b1c
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -9,6 +9,8 @@
 
 ### Chore & Maintenance
 
+- `[jest-leak-detector]` remove code repeat ([#8438](https://github.com/facebook/jest/pull/8438)
+
 ### Performance
 
 ## 24.8.0

diff --git a/packages/jest-leak-detector/package.json b/packages/jest-leak-detector/package.json
@@ -10,6 +10,7 @@
   "main": "build/index.js",
   "types": "build/index.d.ts",
   "dependencies": {
+    "jest-get-type": "^24.8.0",
     "pretty-format": "^24.8.0"
   },
   "devDependencies": {

diff --git a/packages/jest-leak-detector/src/index.ts b/packages/jest-leak-detector/src/index.ts
@@ -8,12 +8,13 @@
 import v8 from 'v8';
 import vm from 'vm';
 import prettyFormat from 'pretty-format';
+import {isPrimitive} from 'jest-get-type';
 
 export default class {
   private _isReferenceBeingHeld: boolean;
 
   constructor(value: unknown) {
-    if (this._isPrimitive(value)) {
+    if (isPrimitive(value)) {
       throw new TypeError(
         [
           'Primitives cannot leak memory.',
@@ -63,8 +64,4 @@ export default class {
       v8.setFlagsFromString('--no-expose-gc');
     }
   }
-
-  private _isPrimitive(value: unknown): boolean {
-    return value !== Object(value);
-  }
 }