3 ms·

I suppose this is because `NaN === NaN` is false. Comparison via `Object.is(NaN, NaN)` works as expected though.

• xnorswap 4y ago
  Indeed, and not just NaN === NaN is false but even NaN == NaN is false too.
• wdroz 4y ago
  The opposite would lead to `(0 * Infinity) === ("foo" / 3)` to be true. I don't know which is better...