Constructs a new ReactiveArray with the given initial content.
Optional
// Emptyconst array1 = reactiveArray<number>();// With initial contentconst array2 = reactiveArray<number>([1, 2, 3]); Copy
// Emptyconst array1 = reactiveArray<number>();// With initial contentconst array2 = reactiveArray<number>([1, 2, 3]);
Constructs a new ReactiveArray with the given initial content.