In typescript-to-lua 1.37.1, calling Array.prototype.includes(NaN) on an array containing NaN evaluates to false instead of true.

const arr = [1, NaN, 3];
console.log(arr.includes(NaN));

Transpiling with tstl and running in Lua prints false, whereas Node and V8 print true as required by the ECMAScript SameValueZero comparison in Array.prototype.includes.

__TS__ArrayIncludes compares elements with self[i] == searchElement, which is always false in Lua when both sides are NaN.

Credit: https://ucsbplse.github.io/