TC39 Delegates on 2024-10-26

Do you know of any concrete cases where frozen objects are slower than u frozen objects in V8? We investigated this 3 years ago and found nothing useful. Links to bugs or repros would be useful.

here's a rather stark example:

const unfrozen = Array.from({ length: 10000 }, (_, i) => i);
const frozen = Object.freeze([...unfrozen]);
fn = arr => arr.slice().concat("FIN");
let result;

result = fn(unfrozen); // 10.787 ops/ms
result = fn(frozen); // 1.427 ops/ms

12:50

Looks like JS Conf announced dates for next year. Not sure how it fits in our plenary calendar. https://openjsf.org/blog/why-attend-jsconf-na-2025