1 files changed, 23 insertions, 0 deletions
diff --git a/node_modules/core-js/modules/esnext.set.symmetric-difference.js b/node_modules/core-js/modules/esnext.set.symmetric-difference.js
new file mode 100644
index 0000000..ccd326f
--- /dev/null
+++ b/node_modules/core-js/modules/esnext.set.symmetric-difference.js
@@ -0,0 +1,23 @@
+'use strict';
+var $ = require('../internals/export');
+var IS_PURE = require('../internals/is-pure');
+var getBuiltIn = require('../internals/get-built-in');
+var anObject = require('../internals/an-object');
+var aFunction = require('../internals/a-function');
+var speciesConstructor = require('../internals/species-constructor');
+var iterate = require('../internals/iterate');
+
+// `Set.prototype.symmetricDifference` method
+// https://github.com/tc39/proposal-set-methods
+$({ target: 'Set', proto: true, real: true, forced: IS_PURE }, {
+  symmetricDifference: function symmetricDifference(iterable) {
+    var set = anObject(this);
+    var newSet = new (speciesConstructor(set, getBuiltIn('Set')))(set);
+    var remover = aFunction(newSet['delete']);
+    var adder = aFunction(newSet.add);
+    iterate(iterable, function (value) {
+      remover.call(newSet, value) || adder.call(newSet, value);
+    });
+    return newSet;
+  }
+});