ReasonJun

toReserved / toSorted / toSpliced (copy, no mutate) const x = [1, 2, 3]; const y = x.toReversed(); y.push(0) const arr = [1,3,2]; const sorted = arr.toSorted(); console.log(arr); // [1, 3, 2] console.log(sorted); // [1, 2, 3] const a = [ "a", "b", "c", "d"] const newArray = a.toSpliced(1,2) // ['a', 'b'] with const x = ["a", "b", "c", "x"] x[3] = "d" console.log(x) // ["a", "b", "c", "d"] const ..