library test;
import self as self;
import "dart:core" as core;

static method main() → dynamic {
  core::List<core::int> x;
  core::List<core::num> y = let final core::List<core::int> #t1 = x in #t1.==(null) ?{core::List<core::num>} <core::num>[] : #t1;
}