static <A> A evalWithTimeoutOrTypedException(int timeoutMS, IF0<A> f) {
  ret evalWithTimeoutOrTypedException(toSeconds(timeoutMS), f);
}

static <A> A evalWithTimeoutOrTypedException(double timeoutSeconds, IF0<A> f) {
  Either<A, Thread> e = evalWithTimeout(timeoutSeconds, f);
  if (e.isA()) ret (A) e.a();
  throw TimeoutException_Inner(
    timeoutSeconds,
    f,
    e.b());
}