2 var ArrayBufferViewCore = require('../internals/array-buffer-view-core');
3 var $copyWithin = require('../internals/array-copy-within');
5 var aTypedArray = ArrayBufferViewCore.aTypedArray;
6 var exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;
8 // `%TypedArray%.prototype.copyWithin` method
9 // https://tc39.es/ecma262/#sec-%typedarray%.prototype.copywithin
10 exportTypedArrayMethod('copyWithin', function copyWithin(target, start /* , end */) {
11 return $copyWithin.call(aTypedArray(this), target, start, arguments.length > 2 ? arguments[2] : undefined);