Ryan Cavanaugh

Your comment was simply noting what year it is. We expect comments to meaningfully contribute to the discussion and will clean up comments that don't do that. [See also](https://github.com/microsoft/TypeScript/wiki/FAQ#time-marches-on)

We go into this a bit at #13778. There isn't a huge amount useful that can be done here while still being sound given the existence of things like `pop`,...

@rubenlg just because the variable you have has type readonlyarray doesn't mean that someone else doesn't have a reference to the same value with a mutable type of binding, So...

We'd take a PR on this so long as it's not invasive, but it doesn't seem like this is a high priority right now due to the low volume of...

I think our longstanding policy of marking things as fully present once they're in the relevant spec plus two major browsers is a sensible one, Safari's eccentricities notwithstanding. I realize...

Just to be clear, this isn't going to work

@typescript-bot perf test this faster

I can't get this to repro either, but the fact that it *does* intermittently repro does sort of make sense. Circularity detection can be path-dependent and the language service can...

I've never seen a circularity error issued where there wasn't some circularity. Sometimes it's subtle to notice, but it's always there.

Can you post the API code you're using?