use AppleScript version "2.7" –Big Sur(11.00) or later
use framework "Foundation"
use framework "UniformtypeIdentifiers"
use scripting additions

set aType to current application’s UTType’s typeWithIdentifier:"com.apple.applescript.script-bundle"
set aLocDesc to aType’s localizedDescription() as string
–> "スクリプトバンドル"

set aVer to (aType’s publicType) as boolean
–> false

set aDec to (aType’s declared) as boolean
–> true

set aDyn to (aType’s dynamic) as boolean
–> false

set aURL to (aType’s supertypes)
–>
(*
(NSSet)
　　<_UTCoreType 0x7fff8b467a80> com.apple.package,
　　<_UTCoreType 0x7fff8b466ea0> public.item,
　　<_UTCoreType 0x7fff8b466f40> public.directory,
　　<_UTCoreType 0x7fff8b467aa0> com.apple.bundle
}
*)

–UTI上で同じレベルにあるものはconfirmsToTypeで調べてもtrueにならない
set bType to current application’s UTType’s typeWithIdentifier:"com.apple.applescript.script"
set aConf to (aType’s conformsToType:bType)
–> false

set cType to current application’s UTType’s typeWithIdentifier:"public.image"
set dType to current application’s UTType’s typeWithIdentifier:"public.png"
set bConf to (cType’s conformsToType:dType)
–> false