revert b7d2a2d, #677

zloirock · Oct 24, 2019 · 1418f5f · 1418f5f
1 parent c491dfc
commit 1418f5f
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,6 +1,5 @@
 ## Changelog
 ##### Unreleased
-- Added a workaround for V8 deoptimization which causes up to 100x+ performance degradation of `Array#{ splice, filter, map }`, [#677](https://github.com/zloirock/core-js/issues/677)
 - Fixed work of `fetch` with polyfilled `URLSearchParams`, [#674](https://github.com/zloirock/core-js/issues/674)
 - `package-lock.json` no longer generated in libraries
 

diff --git a/packages/core-js/internals/array-method-has-species-support.js b/packages/core-js/internals/array-method-has-species-support.js
@@ -5,11 +5,11 @@ var SPECIES = wellKnownSymbol('species');
 
 module.exports = function (METHOD_NAME) {
   return !fails(function () {
-    var object = {};
-    var constructor = object.constructor = {};
+    var array = [];
+    var constructor = array.constructor = {};
     constructor[SPECIES] = function () {
       return { foo: 1 };
     };
-    return [][METHOD_NAME].call(object, Boolean).foo !== 1;
+    return array[METHOD_NAME](Boolean).foo !== 1;
   });
 };