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1'use strict';
2var fails = require('../internals/fails');
3var wellKnownSymbol = require('../internals/well-known-symbol');
4var V8_VERSION = require('../internals/engine-v8-version');
5
6var SPECIES = wellKnownSymbol('species');
7
8module.exports = function (METHOD_NAME) {
9 // We can't use this feature detection in V8 since it causes
10 // deoptimization and serious performance degradation
11 // https://github.com/zloirock/core-js/issues/677
12 return V8_VERSION >= 51 || !fails(function () {
13 var array = [];
14 var constructor = array.constructor = {};
15 constructor[SPECIES] = function () {
16 return { foo: 1 };
17 };
18 return array[METHOD_NAME](Boolean).foo !== 1;
19 });
20};