?: ""

    operator fun get(className: String) =
        classes.computeIfAbsent(className) {
            val outputClassName = if (unshadedPackages.matches(className)) className else shadowPackagePrefix + className
            ClassDetails(outputClassName).also { classDetails ->
                if (keepPackages.matches(className) && !ignorePackages.matches(className)) {
                    entryPoints.add(classDetails)