--- /dev/null
+'use strict';
+// 22.1.3.13 Array.prototype.join(separator)
+var $export = require('./_export')
+ , toIObject = require('./_to-iobject')
+ , arrayJoin = [].join;
+
+// fallback for not array-like strings
+$export($export.P + $export.F * (require('./_iobject') != Object || !require('./_strict-method')(arrayJoin)), 'Array', {
+ join: function join(separator){
+ return arrayJoin.call(toIObject(this), separator === undefined ? ',' : separator);
+ }
+});
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