--- /dev/null
+var TO_STRING_TAG_SUPPORT = require('../internals/to-string-tag-support');
+var classofRaw = require('../internals/classof-raw');
+var wellKnownSymbol = require('../internals/well-known-symbol');
+
+var TO_STRING_TAG = wellKnownSymbol('toStringTag');
+// ES3 wrong here
+var CORRECT_ARGUMENTS = classofRaw(function () { return arguments; }()) == 'Arguments';
+
+// fallback for IE11 Script Access Denied error
+var tryGet = function (it, key) {
+ try {
+ return it[key];
+ } catch (error) { /* empty */ }
+};
+
+// getting tag from ES6+ `Object.prototype.toString`
+module.exports = TO_STRING_TAG_SUPPORT ? classofRaw : function (it) {
+ var O, tag, result;
+ return it === undefined ? 'Undefined' : it === null ? 'Null'
+ // @@toStringTag case
+ : typeof (tag = tryGet(O = Object(it), TO_STRING_TAG)) == 'string' ? tag
+ // builtinTag case
+ : CORRECT_ARGUMENTS ? classofRaw(O)
+ // ES3 arguments fallback
+ : (result = classofRaw(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : result;
+};