Usage: kotlin-dce-js <options> <source files>
where possible options include:
  -keep <fully.qualified.name[,]>
                             List of fully-qualified names of declarations that shouldn't be eliminated.
  -dev-mode                  Development mode: don't strip out any code, just copy dependencies.
  -output-dir <path>         Output directory.
  -Werror                    Report an error if there are any warnings.
  -X                         Print a synopsis of advanced options.
  -help (-h)                 Print a synopsis of standard options.
  -nowarn                    Don't generate any warnings.
  -verbose                   Enable verbose logging output.
  -version                   Display the compiler version.
  -J<option>                 Pass an option directly to JVM.
  @<argfile>                 Read compiler arguments and file paths from the given file.
OK