{"ScriptPreparationCode":"const largeList = Array.from({length: 100_000}).map((_, idx) =\u003E \u0060${idx}\u0060.padStart(30, \u00270\u0027));","TestCases":[{"Name":"spread operator","Code":"const newList = [...largeList, \u0027a new string\u0027];","IsDeferred":false},{"Name":"Array.from \u002B push","Code":"const newList = Array.from(largeList); newList.push(\u0027a new string\u0027);","IsDeferred":false},{"Name":"Slice \u002B push","Code":"const newList = largeList.slice(); newList.push(\u0027a new string\u0027);","IsDeferred":false},{"Name":"flat","Code":"const newList = [largeList, [\u0027a new string\u0027]].flat();","IsDeferred":false}]}