result.js

// Generated by BUCKLESCRIPT VERSION 1.9.2, PLEASE EDIT WITH CARE
'use strict';

var Caml_missing_polyfill = require("stdlib/caml_missing_polyfill");


  function foo (x) {
    if (x == 0) return null;
    else if (x == 1) return 0;
    return "bar";
  }

;

Caml_missing_polyfill.not_implemented(" not implemented by bucklescript yet\n");

/*  Not a pure module */

variant_return.re

type t =
| Int(int)
| String(string);

type returnType = Js.nullable(t);

[%%bs.raw{|
  function foo (x) {
    if (x == 0) return null;
    else if (x == 1) return 0;
    return "bar";
  }
|}];

external foo: int => returnType = "";

foo(0);