Accessing the third element - https://reasonml.chat/t/using-json-in-reason-with-belt/360

Demo.re

[@bs.module] external lab : Js.t({..}) = "./lab.json";

let x = lab##components;

let x2 = Belt.List.fromArray(x);

/* Js.log2("length using array length: ", Belt.Array.length(x)); */
Js.log2("length using list length: ", Belt.List.length(x2));

Js.log(x2);

let third = Belt.List.get(x2, 2);

let unwrapThird = someVal =>
  switch someVal {
  | None => Js.log("nothing here")
  | Some(value) => Js.log(value)
  };

unwrapThird(third);