Acme.BookStore.HttpApi.Host/node_modules/es5-ext/array/#/copy-within/is-implemented.js

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"use strict";

module.exports = function () {
	var arr = [1, 2, 3, 4, 5];
	if (typeof arr.copyWithin !== "function") return false;
	return String(arr.copyWithin(1, 3)) === "1,4,5,4,5";
};