library /*isNonNullableByDefault*/;
import self as self;
import "dart:core" as core;

static method main() → dynamic {
  dynamic x;
  core::int i = 0;
  while ((let final core::int #t1 = i in let final core::int #t2 = i = #t1.{core::num::+}(1){(core::num) → core::int} in #t1).{core::num::<}(5){(core::num) → core::bool}) {
    core::int x = i;
  }
}