Translate F#/C# tuple deconstruction to TypeScript deconstruction

[Jand42]

F#

let (a, b, _, _) = t

and C#

var (a, b, _, _) = t;

tuple deconstruction should both translate to nice TypeScript array deconstruction:

let [a, b, , ] = x

F# list decontruction

let (h :: t) = l

is also possible to map to

switch (l.$) {
  case 0:
    throw new WebSharper.MatchFailureException(0, 0, 0);
  case 1:
    var { $1: h, $2: t } = l;
}