library;
import self as self;
import "dart:core" as core;
import "never_opt_out_lib.dart" as nev;

import "org-dartlang-testcase:///never_opt_out_lib.dart";

static field Never* optOutNever;
static field core::Null? inferredOptOutNever = nev::optInNever;
static method main() → dynamic {
  Never* localNever = null;
  core::Null? localNull = null;
  Never inferredLocalNever = nev::optInNever;
  localNever = localNever;
  self::optOutNever = localNever;
  nev::optInNever = localNever;
  localNull = localNever;
  self::inferredOptOutNever = localNever;
  inferredLocalNever = localNever;
  localNever = self::optOutNever;
  self::optOutNever = self::optOutNever;
  nev::optInNever = self::optOutNever;
  localNull = self::optOutNever;
  self::inferredOptOutNever = self::optOutNever;
  inferredLocalNever = self::optOutNever;
  localNever = nev::optInNever;
  self::optOutNever = nev::optInNever;
  nev::optInNever = nev::optInNever;
  localNull = nev::optInNever;
  self::inferredOptOutNever = nev::optInNever;
  inferredLocalNever = nev::optInNever;
  localNever = localNull;
  self::optOutNever = localNull;
  nev::optInNever = localNull as{TypeError} Never;
  localNull = localNull;
  self::inferredOptOutNever = localNull;
  inferredLocalNever = localNull as{TypeError} Never;
  localNever = self::inferredOptOutNever;
  self::optOutNever = self::inferredOptOutNever;
  nev::optInNever = self::inferredOptOutNever as{TypeError} Never;
  localNull = self::inferredOptOutNever;
  self::inferredOptOutNever = self::inferredOptOutNever;
  inferredLocalNever = self::inferredOptOutNever as{TypeError} Never;
  localNever = inferredLocalNever;
  self::optOutNever = inferredLocalNever;
  nev::optInNever = inferredLocalNever;
  localNull = inferredLocalNever;
  self::inferredOptOutNever = inferredLocalNever;
  inferredLocalNever = inferredLocalNever;
  self::throws(() → Never => self::optOutNever = nev::throwing());
  self::throws(() → Never => localNever = nev::throwing());
  self::throws(() → Never => self::optOutNever = nev::throwing());
  self::throws(() → Never => nev::optInNever = nev::throwing());
  self::throws(() → Never => self::inferredOptOutNever = nev::throwing());
  self::throws(() → Never => inferredLocalNever = nev::throwing());
}
static method throws(() →* void f) → dynamic {
  try {
    f.call();
  }
  on dynamic catch(final dynamic _) {
    return;
  }
  throw "Expected exception";
}

library /*isNonNullableByDefault*/;
import self as nev;
import "never_opt_out.dart" as self;

import "org-dartlang-testcase:///never_opt_out.dart";

static field Never optInNever = self::optOutNever;
static method throwing() → Never
  return throw "Never!";