{"ScriptPreparationCode":"var list = [...Array(1000).keys()].map((index) =\u003E {return {id: index, name: \u0060PRODUCT_${index}\u0060}});\r\nvar newItems = [{id: 50, name: \u0027CUST_50\u0027}, {id: 412, name: \u0027CUST_412\u0027}];\r\n","TestCases":[{"Name":"concat","Code":"var x = list.concat(newItems);","IsDeferred":false},{"Name":"spread","Code":"var y = [...list, ...newItems];","IsDeferred":false}]}