Jsoo: postMessage, read back, conditions for safely doing so

[zeroexcuses]

1. Thanks; agreed, it’s basically the same question.

2. Did you ever solve this ? It was not clear to me from the followups whether you solved it.

@dbuenzli

I’m just wondering if anyone has experience with webworkers. I’m getting miserable performance (70s) using them in contrast to blocking the page UI thread (3s), even if I subtract the data transfert overhead of 2-3s, that still seems a bit egregious.