Trying to figure out if KaiOS browser supports import maps

[o-alquimista]

caniuse.com reports that KaiOS does not support import maps; but that was for version 3.1, and the Wikipedia page says the last version was "4.0 / May 2025".

I see that there's a file ImportMap.h, but I couldn't figure out if that was ever released. I can't even find version tags here. Am I in the wrong place?

[o-alquimista]

caniuse.com also reports that KaiOS does not support Array.prototype.at, but I've found what looks like its definition in the source code. This commit reveals that it was added in 2020 (before the 4.0 release), but it's unclear whether it was released with it. Tagging releases would help a lot here.