Try compare ReactDOMRe.createElement vs ReactDOMRe.createElementVariadic

main.bs.js

// Generated by BUCKLESCRIPT VERSION 5.0.4, PLEASE EDIT WITH CARE
'use strict';

var Block = require("./stdlib/block.js");
var Curry = require("./stdlib/curry.js");
var React = require("react");
var ReactDOMRe = require("./stdlib/reactDOMRe.js");

var a = React.createElement("div", undefined, "e");

function b(children) {
  // https://github.com/BuckleScript/bucklescript/blob/master/lib/js/caml_splice_call.js#L4
  return Block.spliceApply(React.createElement, [
              "div",
              undefined,
              children
            ]);
  // ===
  return React.createElement.apply(null, ["div", undefined].concat(children));
}

var c = React.createElement("div", undefined, "e");

function d(children) {
  return Block.spliceApply(React.createElement, [
              "div",
              undefined,
              children
            ]);
  // ===
  return React.createElement.apply(null, ["div", undefined].concat(children));
}

var e = Curry._3(ReactDOMRe.createElementVariadic, "div", undefined, /* array */["e"]);

function f(children) {
  // https://github.com/reasonml/reason-react/blob/master/lib/js/src/ReactDOMRe.js#L61
  return Curry._3(ReactDOMRe.createElementVariadic, "div", undefined, children);
  // ===
  return React.createElement.apply(null, ["div", undefined].concat(children));
}

exports.a = a;
exports.b = b;
exports.c = c;
exports.d = d;
exports.e = e;
exports.f = f;
/* a Not a pure module */

main.ml

let a = ReactDOMRe.createDOMElementVariadic("div", [|React.string("e")|]);
let b = children => ReactDOMRe.createDOMElementVariadic("div", children);
let c = ReactDOMRe.createElement("div", [|React.string("e")|]);
let d = children => ReactDOMRe.createElement("div", children);
let e = ReactDOMRe.createElementVariadic("div", [|React.string("e")|]);
let f = children => ReactDOMRe.createElementVariadic("div", children);