{"ScriptPreparationCode":"const arr = [1, [2, [3, [4]], 5]];","TestCases":[{"Name":"native 1","Code":"[1, [2, [3, [4]], 5]].reduce( (a, b) =\u003E a.concat(b), [])","IsDeferred":false},{"Name":"native 2","Code":"[].concat(...[1, [2, [3, [4]], 5]])","IsDeferred":false},{"Name":"Native(ES2019)","Code":"[1, [2, [3, [4]], 5]].flat()","IsDeferred":false},{"Name":"flatMap","Code":"[1, [2, [3, [4]], 5]].flatMap(number =\u003E number)","IsDeferred":false},{"Name":"_.flatten","Code":"_.flatten([1, [2, [3, [4]], 5]])","IsDeferred":false}]}