qmldom claims to handle .js files but doesn't

qmldom's help text specifies that .qml and .js files can be parsed.

However, running it with --dump-ast on js files yields an error of not being able to detect the filetype.

I understand that this may not have been in scope yet. Maybe raising this a as bug is a bit overkill. Feel free to close, but I am also curious if you have any suggestions as to how I could obtain an AST for a .js or .mjs file via qmldom.