classPathFiles: List<File>,
    classPathDependencies: List<File> = emptyList(),
) : Closeable {

    private
    val relevantClassPathFiles = classPathFiles.filter { it.isDirectory || (it.isFile && it.length() > 0) }

    private
    val openJars = mutableMapOf<File, JarFile>()

    private
    val classBytesIndex = (relevantClassPathFiles + classPathDependencies + platformClassLoader).map { classBytesIndexFor(it) }